Loading…
This event has ended. Create your own event on Sched.

Type: Dev / Tech clear filter
Tuesday, May 26
 

10:00 CEST

Why is an AI Gateway no longer optional?
Tuesday May 26, 2026 10:00 - 10:30 CEST
While scrolling on Reddit, I found this interesting (yet frightening) post: “$82,000 in 48H from a stolen Gemini API key. My monthly usage is $180. Facing bankruptcy.” This story is a powerful reminder of why an AI gateway is a critical component in ADEO's AI governance.

In this talk, we will dive into the 'why' and 'how' of building an AI Gateway. We will share the inside story of how ADEO tackled this challenge through a strategic collaboration between the AI Services and DevPortal teams to create a secure, multi-provider entry point for our developers.
Speakers
avatar for Saad Amal

Saad Amal

Tech Lead, ADEO Services
My name is Saad AMAL, I've been in the IT industry for more than 20 years. I have worked as a Database Administrator, Devops and Technical Leader. I am now working as a software engineer in the Adeo AI Services team.
I love Python and coding !
avatar for Bruno Domenici

Bruno Domenici

Staff Engineer at Adeo Data Storage and Exchange, ADEO Services
Staff Engineer for Adeo Global Tech & Data Platform, working mostly with Streaming & Integration Platforms (Kafka, API Management, ESB, Databases) 👷🏻‍♂️👨🏻‍💻
Tuesday May 26, 2026 10:00 - 10:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

10:00 CEST

DEUTSCHE KREDITBANK - DKB - Platform as a Product: Delivering real value to developers at DKB
Tuesday May 26, 2026 10:00 - 10:45 CEST
Treating the platform as a product is more than a mindset shift - it’s a practical approach to making platforms genuinely useful for developers. Standardising tooling alone isn’t enough. Adoption comes from solving real pain points, simplifying workflows, and treating internal teams like customers. This session explores how product thinking at DKB transforms internal platforms into high-impact tools that developers actively want to use.
  • How to work with platform scope and strategy and how to make them visible for users?
  • How to optimize working with product discovery and feedback.
  • The importance of the user interface and user experience of the platform.
  • Metrics and other ways to evaluate the impact of the platform.

Speakers
avatar for Stephane Di Cesare

Stephane Di Cesare

Platform Engineer, Deutsche Kreditbank

Tuesday May 26, 2026 10:00 - 10:45 CEST
4 - MEDIUM STAGE

10:00 CEST

E-commerce Hackathon: Join the dark side to build better shields!
Tuesday May 26, 2026 10:00 - 11:30 CEST
As developers, we are constantly asked to "Shift Left," follow "Secure by Design" principles, and fix endless lists of vulnerabilities. But here is the reality: we are rarely taught how these flaws actually work or how an attacker exploits them. How can you effectively fix a vulnerability you can't even reproduce? How can you tell a critical threat from a false positive?

It’s time to bridge that gap.

In this session, Decathlon’s Offensive Security team pulls back the curtain. After a deep dive into Red Team methodologies and real-world attack vectors, it’s your turn to strike. Using professional tools like Burp Suite, you will be deployed onto a private e-commerce instance. Your mission? Stop being the target and become the attacker.

The Goal: By learning how to "pwn" the shop, you will finally understand the "why" behind security patches. Join the competition, climb the leaderboard, and win prizes while becoming the ultimate guardian of our ecosystem.
Speakers
avatar for Yannick Miroux

Yannick Miroux

Ext - Leroy Merlin France
avatar for Quentin Torres

Quentin Torres

Cybersecurity Architect, Leroy Merlin France
Cybersecurity Architect for Leroy Merlin France (3 years), currently leading security for the Kbane and Leroy Merlin Rénovation BUs. I also oversee the Information Protection strategy for the entire French Region within Adeo Services, bridging technical architecture with strategic... Read More →
avatar for Tony Ghilain

Tony Ghilain

Security, Decathlon
Tony Ghilain began coding in 2001, a passion that became his profession in 2009. From the start, a parallel hobby in tinkering with computers and "hacking" fueled his curiosity. He naturally merged these two passions in the field of DevSecOps, leading the implementation of integrated... Read More →
Tuesday May 26, 2026 10:00 - 11:30 CEST
🏐 PRACTICE ZONE #4 135 Rue Sadi Carnot, Ronchin, France

10:45 CEST

How to standardize internal front-end applications?
Tuesday May 26, 2026 10:45 - 11:15 CEST
At Decathlon, we have customer-facing applications, including one you all know: our e-commerce website.
This is based on our open-source design system : Vitamin Play.

But we also have many internal front-end applications.
The needs of these applications are very different from those of an e-commerce site.
Take navigation, for example. They are two completely different requirements.

Furthermore, these applications were built organically, and no guidelines exist to standardize them.
Imagine the tab titles in your browser: do you think simply displaying the application name is sufficient for a user to understand the page that is behind it?
And even worse, what if each application used by the same user is different in terms of design, user experience, etc.?

That's why we launched an initiative to produce guidelines and components that will standardize our internal applications for a better experience for our internal teammates, all without an allocated budget!

In this talk, we'll explain how we built this community, what our objective is, and what our initial achievements are.
Speakers
ST

Shuku Torabi

Decathlon
avatar for David Gabrielli

David Gabrielli

Engineering Manager, Decathlon


Tuesday May 26, 2026 10:45 - 11:15 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

10:45 CEST

Beyond Autocomplete: Mastering Context Engineering for the AI-First Developer
Tuesday May 26, 2026 10:45 - 11:30 CEST

Speakers
avatar for Anthony Quéré

Anthony Quéré

Software Engineer, Ext - ADEO Services
I’ve been building software for over a decade. I focus on human-centered products that prioritize both user and developer experience. I’m also a teacher, and hopefully someday a mentor, sharing knowledge is a core part of my work.

Lately I started focusing on AI-powered applic... Read More →
Tuesday May 26, 2026 10:45 - 11:30 CEST
3 - LAB 135 Rue Sadi Carnot, Ronchin, France

11:00 CEST

How open claw killed my SaaS: Architecting systems for autonomous agents.
Tuesday May 26, 2026 11:00 - 11:30 CEST
I spent months architecting a complex SaaS for blockchain trading. I built robust microservices, complex Backend-For-Frontend (BFF) aggregation layers, and intricate state management systems just to feed a heavy web application. And then, a single autonomous agent (Openclaw) bypassed all that complexity, proving it could cover the exact same needs with extreme, user-driven personalization.

This experience was a wake-up call: **Autonomous agents are becoming the new major channel of the web.**

For companies building large-scale B2C platforms, this is a massive paradigm shift. Tomorrow's customers won't just browse our websites; they will send their personal AI agents to find products, interact with our services, and complete transactions for them. If our architectures are solely optimized for human screens, we will miss this revolution.

In this 45-minute deep dive tailored for developers, architects, and tech professionals building the future of our applications, we will explore how to evolve our systems to serve this new channel:

- **Beyond the BFF (Backend-For-Frontend)**: Why optimizing our APIs solely for screens is no longer enough. We will explore how to transition from screen-specific aggregators to exposing atomic, autonomous "Capabilities" (Tools).

- **Designing Agent-Ready APIs**: How to design self-describing capabilities optimized for LLM execution, memory, and reasoning, allowing them to coexist with your traditional frontends.

- **Protocols of the New Webv**: A technical deep dive into **WebMCP** (standardizing how systems expose tools dynamically without web scraping) and **UCP** (granting agents transactional capabilities).

- **Live Demo - "*From API to Skill*"**: What happens when a platform isn't "agent-ready" yet? I will demonstrate how to wrap a traditional REST API (using Strava data) and transform it live into a standardized, agent-ready "Skill" to instantly generate a highly personalized AI sports coach.

Join me to discover how to future-proof your architecture, bridge the gap between human UIs and AI agents, and start building powerful capabilities for the agentic web.
Speakers
avatar for Bertrand Gressier

Bertrand Gressier

Staff Engineer, ADEO Services
For the past 25 years, I have been building software and navigating the incredible shifts in our digital landscape.From my early days developing on mainframes and the birth of the Web, all the way to today's Agentic Web revolution, I have always been driven by the evolution of technology.Currently... Read More →
Tuesday May 26, 2026 11:00 - 11:30 CEST
4 - MEDIUM STAGE

11:15 CEST

VIDEOLAN/VLC - AI now and future
Tuesday May 26, 2026 11:15 - 12:00 CEST
Jean-Baptiste Kempf will shade lights on his views on AI as of today, risks and opportunities and what he anticipate in the near future.

Speakers
avatar for Jean-Baptiste Kempf

Jean-Baptiste Kempf

VLC
Jean-Baptiste Kempf is the president of VideoLAN and lead developer of the iconic open-source VLC media player—with over 5 billion downloads—is a French engineer renowned for contributions to multimedia projects like FFmpeg, x264, dav1d, and co-hosting the popular tech podcas... Read More →
Tuesday May 26, 2026 11:15 - 12:00 CEST
1 - MAIN STAGE

11:30 CEST

Cyber training and simulations: From digital to the store.
Tuesday May 26, 2026 11:30 - 12:00 CEST
From routine incidents to national crises, the France Cybersecurity team train our companies for the worst.
Join us as we break down our training methodology, share key results, and reveal the most frequent attack patterns we face today.
We’ll dive deep into a real-world scenario at Leroy Merlin France: after 2 hours of total network isolation, discover how store teams successfully maintained self-service and kept the store open.
///
La direction cybersécurité France entraîne nos entreprises à faire face à des situations cybersécurité allant de la réaction à un incident basique à une crise nationale.
Dans ce Talk, nous abordons comment nous mettons en place ces entraînements quels sont les résultats et les scénarios d'attaques qui sont le plus observés et sur lesquels nous devons être prêt.
Nous ferons un retour plus en détail sur l'expérience vécu en Magasin Leroy Merlin France après une isolation totale du réseau pendant 2 heures -> comment les équipes en magasins ont pu maintenir le libre service et ouvrir le magasin.
Speakers
avatar for Maxime Savary

Maxime Savary

Leroy Merlin France
Maxime Savary :
I am focused on cybersecurity risk and strategy to ensure that our cybersecurity enable our business.
I join Adeo in 2017 as cybersecurity leader for Adeo Production and France CISO since 2022. I have spent these past few years investing to preserve and safeguard our retail DNA, raising awareness and training our employees—who serve as our first line of defense—and ensuring the... Read More →
avatar for Aurelia Dupre

Aurelia Dupre

Leroy Merlin France (ext)


Tuesday May 26, 2026 11:30 - 12:00 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

11:45 CEST

Managing your custom MCP Server in ADEO
Tuesday May 26, 2026 11:45 - 12:15 CEST
Deploying custom MCP servers requires more than just a connection—it requires a robust, governed perimeter. This session explores how we leverage our AI Gateway / Developer Portal as the central nervous system for all MCP traffic, transforming standalone LLMs into actionable enterprise tools.

We will do a deep dive into:

* The "Gold Path" Deployment: Utilizing the Developer Portal to publish and manage consumers.
* REST API Synthesis: Strategies for wrapping our existing internal REST ecosystem into MCP tools, allowing LLMs to interact with legacy and microservice architectures securely.
* The AI Gateway Architecture: A breakdown of the security primitives—including identity propagation, request filtering, and automated rate limiting—that protect our data.
* Deep Observability: Utilizing our telemetry stack to ensure every AI-driven action is logged, audited, and debuggable in real-time.
Speakers
avatar for Bruno Domenici

Bruno Domenici

Staff Engineer at Adeo Data Storage and Exchange, ADEO Services
Staff Engineer for Adeo Global Tech & Data Platform, working mostly with Streaming & Integration Platforms (Kafka, API Management, ESB, Databases) 👷🏻‍♂️👨🏻‍💻
Tuesday May 26, 2026 11:45 - 12:15 CEST
4 - MEDIUM STAGE

12:15 CEST

The OctoPerf MCP server.
Tuesday May 26, 2026 12:15 - 12:45 CEST
The idea is to show an MCP server running with our performance testing tool at ADEO global scale: OctoPerf.

The aim is to further democratize the implementation of performance testing, but above all to save considerable time in analyzing reports and improving the quality of script writing.

The idea is to show that, with AI, each team will now have an agent capable of communicating with our server and acting like a performance test engineer.
Speakers
avatar for Thomas Pitteman

Thomas Pitteman

Performance Testing Expert, Ext - ADEO Services
I could say that I have an unusual career path.

I initially worked in the international multimodal transport industry for about ten years, and then I decided to make a reconversion and merge work with passion, as a developer at first, and later I discovered the world of performa... Read More →
Tuesday May 26, 2026 12:15 - 12:45 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

14:00 CEST

A11Y Ops: Solving 80% of accessibility barriers with 20% effort
Tuesday May 26, 2026 14:00 - 14:30 CEST
Think digital accessibility is an impenetrable maze of complex rules? Think again. We live in a golden age of tooling where ensuring your site is inclusive has never been more achievable.

- Kickstarting Accessibility: A quick introduction to accessibility, covering the creation of an accessibility statement and initial remediation efforts. Discover how to rapidly integrate accessibility tools into your product using AI and ready-to-use solutions.
- The Power of Automation: Discover how to leverage static and dynamic "safety nets" directly in your workflow to catch (a good) majority of errors before they even reach production.
- The Human Reality Check: Tools are powerful, but they aren't perfect. We will conclude with a practical, streamlined "First-Check" methodology designed to bridge the gap between automated scans and a full-scale expert audit. And prepare your product for legal compliance!

Key Takeaways: Don't aim for 100% perfection on day one. Instead, walk away with a toolkit to build a "healthy HTML base," automate your testing, and prepare your product for a future full audit with confidence.

Accessibility isn't a mountain—it's a series of smart, automated steps. Let’s take the first ones together.

From Decathlon SIG Digital Accessibility Team
Speakers
avatar for Thierry Saint Maxent

Thierry Saint Maxent

Decathlon
Lieke Beunders:
Senior software engineer at the Decathlon design system, previously at Eneco.

Thibault Mahé:
Tech lead Design System of Decathlon
SIG Digital Accessibility leader
Proud Dad and dog owner.

Thierry Saint-Maxent:
Dev Front in Decathlon, Accessibility Audit Certification... Read More →
avatar for Thibault Mahe

Thibault Mahe

Decathlon
Tech lead Design System of Decathlon
SIG Digital Accessibility leader
LB

Lieke Beunders

Decathlon
Senior software engineer at the Decathlon design system, previously at Eneco.
Tuesday May 26, 2026 14:00 - 14:30 CEST
4 - MEDIUM STAGE

14:00 CEST

The augmented cyber analyst: Lessons learned from our Multi-Agent experiment
Tuesday May 26, 2026 14:00 - 14:30 CEST
Securing our digital products is a major challenge. Cybersecurity analysts often lose precious time dealing with time-consuming processes and sometimes incomplete tools. This slows down the identification of risks and vulnerabilities, as well as the remediations that development teams need to apply.

To tackle this issue at ADEO, we decided to rethink our approach: what if we designed a squad of specialized AI agents ?

In this talk, we invite you behind the scenes of this initiative. You will discover our goals, our initial results, and how this multi-agent architecture could ultimately transform your team's day-to-day work.
Speakers
avatar for Millian Lamiaux

Millian Lamiaux

Cybersecurity Engineer, ADEO Services
My name is Millian Lamiaux, and I am an Apprentice Cybersecurity Engineer.

Passionate about the intersection of mathematics, software development, and security, I have been growing within ADEO Services for two and a half years. After contributing to Global Tech & Data Platform challenges within the Defense Solutions teams, I recently joined the SOC (Security... Read More →
avatar for Thomas Leleu

Thomas Leleu

Cybersecurity, ADEO Services
My name is Thomas Leleu, and I am a Cybersecurity Risk Analyst for the Product Digital Platform at ADEO.

Starting out as an intern, then an apprentice before joining full-time, I have been working in the group's cybersecurity department for nearly 10 years. Spending several years within the "Defense Solutions" team within the Global Tech & Data platform, I notably contributed to improving... Read More →
Tuesday May 26, 2026 14:00 - 14:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

14:00 CEST

Fireside Chat with Kelsey Hightower (Kubernetes & Engineering Platform)
Tuesday May 26, 2026 14:00 - 14:45 CEST
Kelsey will share his philosophy of Engineering Platforms used by millions and his views on building good software.
Speakers
avatar for Kelsey Hightower

Kelsey Hightower

Distinguished Engineer (retired), Google Cloud
Kelsey Hightower is a renowned software engineer, Kubernetes evangelist, and former Distinguished Engineer at Google Cloud. His career spans Puppet, CoreOS, and Google, where he championed open source and co-founded KubeCon. Self-taught, he demystifies cloud-native tech through workshops... Read More →
Tuesday May 26, 2026 14:00 - 14:45 CEST
1 - MAIN STAGE

14:45 CEST

GOOGLE - Overview of core network security and private connectivity services
Tuesday May 26, 2026 14:45 - 15:15 CEST
This deep dive session will cover the role of Private Service Connect (PSC) in securing endpoints for VPC-hosted services and Google APIs.
Speakers
avatar for Matthieu Texier

Matthieu Texier

Customer engineer specialist - Network and Security, Google

Tuesday May 26, 2026 14:45 - 15:15 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

15:00 CEST

The Art of Effective BDD: Unleash the Potential of your Java Microservices
Tuesday May 26, 2026 15:00 - 16:30 CEST
Summary: Do you find testing your Java microservices tedious? Discover how we at Decathlon use Cucumber and the open-source library Tzatziki to test our applications effortlessly. By combining the expressive power of Cucumber—which allows for writing tests in natural Gherkin language—and Tzatziki’s ready-to-use modules, we have created an approach at Decathlon that drastically simplifies our integration and end-to-end testing. In this hands-on workshop, you will learn how to leverage Cucumber and Tzatziki to test every aspect of your Java microservices, finally reconciling functional understanding, development speed, and test quality.

Content: During this workshop, we will start by introducing Cucumber and the BDD approach we have adopted at Decathlon. You will discover how Tzatziki, our Cucumber Java extension, drastically simplifies the writing of integration tests and allows you to express business requirements in natural language.

We will follow up with three practical exercises.

The first will allow you to test a complete CRUD application with a PostgreSQL database, manipulating and verifying database data without needing to write code.

In the second exercise, you will learn how to mock external API responses while verifying your application's outgoing calls, thus mastering the HTTP interactions of your microservices.

The third exercise will introduce you to Kafka stream testing, where you will discover how to read, write, and validate messages using Avro schemas or JSON format.

Finally, we will tackle a fourth exercise dedicated to testing MCP servers using the new tzatziki-test-mcp module. Because yes, validating your MCP server is crucial before going to production, you will learn how to ensure it is reliable and ready for deployment.

Audience: This workshop is designed for Java developers from beginners to experienced professionals who wish to refine their knowledge of testing and master new tools to improve their workflow.
Speakers
avatar for Alexandre Patelli

Alexandre Patelli

Decathlon
Alexandre Patelli is a Tech Lead with over 4 years of experience at Decathlon. He is primarily passionate about backend technologies, specifically Java and its entire ecosystem. Having recently taken over the maintenance of Decathlon's Tzatziki library, Alexandre aims to evolve the... Read More →
avatar for Philippe Babin

Philippe Babin

Decathlon
Philippe Babin has been serving as a QA Advisor at Decathlon for the past five years. In this role, he supports three feature teams by imparting best practices in quality management to enhance team maturity.

He is highly proficient in test automation and performance testing, spe... Read More →
Tuesday May 26, 2026 15:00 - 16:30 CEST
🏈 PRACTICE ZONE #3 135 Rue Sadi Carnot, Ronchin, France

15:30 CEST

From legacy job schedulers to Kubernetes-native workflows
Tuesday May 26, 2026 15:30 - 16:00 CEST
### LMBR's Journey with Argo Workflows & Events on GTDP

In this talk, we will explore how LMBR currently manages event-driven workloads and job scheduling operations, and how we are migrating several workloads from legacy job orchestration pipelines running on AWX and Airflow to a *Kubernetes-native solution based on Argo Workflows and Argo Events within the GTDP tools.*

We will share the main challenges of our current infrastructure, such as the high operational cost of maintaining these workloads, the lack of visibility into job execution, the absence of standards and patterns for creating new jobs, and the usage of tools outside of ADEO's Tech Radar

On the other hand, Argo Workflows and Argo Events have the potential to address most of these challenges. As a Kubernetes-native solution, it provides better scalability, observability, and integration with our existing platform ecosystem. In this talk, we will briefly explain the key differences between the tools and how the LMBR DevOps team is currently evaluating their adoption across three main scenarios:

- A legacy application called Jobchain, an AWX deployment running on five virtual machines that supports more than 700k business-critical jobs per month;
- Datateam's Airflow with Cloud RUN and VertexAI, three expensive tools outside the Tech Radar that do not align with ADEO's Cloud Agnostic strategy;
- A third scenario could explore event-driven automations across several Devops platforms, triggered by Git merges, API calls, or application webhooks, Argo can perform automated workflows for operational tasks, validations, and data processing pipelines.

Our goal is to share the current status of the Argo Workflows and Argo Events adoption process, highlight the lessons learned so far, and demonstrate how impactful knowledge sharing through ADEO innersource communities — such as the Cloud Champions Community — has been for this initiative. We will also discuss the expected benefits once the migration is completed.

Additionally, we wish to extend our knowledge to the attendees over tools that are currently trending on DevOps and Data World by sharing our practical experience, potential use cases that organizations can explore, and a brief overview of how Argo works and integrates with other GTDP tools.
Speakers
avatar for Joao Vithor Pilastri Fogaca

Joao Vithor Pilastri Fogaca

DevOps Specialist, Leroy Merlin Brazil
João Vithor, 28, is a DevOps Specialist at LMBR, working with ADEO’s cloud-native platforms, Kubernetes, and infrastructure automation.
Known as "Johnny" among colleagues, he focuses on platform engineering, improving developer experience, and modernizing legacy workloads throu... Read More →
avatar for Diego Brasileiro

Diego Brasileiro

Specialist 2 DevOps and Observability, Leroy Merlin Brazil
Diego Brasileiro is a DevOps and Observability Specialist at Leroy Merlin Brazil (ADEO Group), with over 15 years of experience, the last 8 years have been dedicated to DevOps and large scale projects involving cloud native solutions. He joined Leroy Merlin in 2020, where he leads... Read More →
Tuesday May 26, 2026 15:30 - 16:00 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

15:30 CEST

Vibe coding the physical world: managing customer projects from A to Z
Tuesday May 26, 2026 15:30 - 16:00 CEST
Sharing the knowledge gained from this POC, demonstrating how Vibe Coding helps us streamline and standardize the construction of a tech project from the ground up, delivering business value
Speakers
avatar for Carmen Granados

Carmen Granados

Product Manager, Leroy Merlin Spain
AC

Alberto Cebrián

Ext Leroy Merlin Spain
Tuesday May 26, 2026 15:30 - 16:00 CEST
4 - MEDIUM STAGE

16:15 CEST

Architecting zero-Ops observability: Overcoming the hard problems in building a fully managed OTLP Infrastructure
Tuesday May 26, 2026 16:15 - 16:45 CEST
The adoption of OpenTelemetry (OTel) is driven by the promise of vendor-neutral ingestion, yet implementing a scalable, production-grade OTLP pipeline remains a significant operational challenge. Our team took on this complexity by building a fully managed, high-throughput OTLP ingestion service from the ground up for the Elastic Cloud platform. This service handles logs, metrics, and traces, allowing customers to simply "Give me an OTLP endpoint and manage everything else".
Speakers
avatar for Julien Lind

Julien Lind

Elastic
Julien Lind is a technology executive and engineering leader with a track record of scaling high-impact software teams and delivering complex digital products. In his current role as Director of Software Engineering at Elastic, Julien oversees distributed engineering teams focused... Read More →
avatar for Pierre Hilbert

Pierre Hilbert

Elastic
Pierre Hilbert is a seasoned technology leader and Senior Software Engineering Manager at Elastic, where he drives high-impact engineering initiatives and builds resilient, scalable software solutions that serve users around the world. With a strong foundation in software development... Read More →
Tuesday May 26, 2026 16:15 - 16:45 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

16:15 CEST

DECATHLON X ADEO - Using OpenTelemetry to drive SRE efficiency
Tuesday May 26, 2026 16:15 - 16:45 CEST
Opentelemetry has recently skyrocket to become a new standard in telemetry collection. Both Decathlon and Adeo have started incorporating it into their observability stack with different approaches. In this talk we will cover the following points :

- What is Opentelemetry ?
- A comparison between the approaches used by adeo and decathlon
- The opportunities of opentelemetry (perspectives from decathlon and adeo)
- Key results from both companies
Speakers
avatar for Pavel Chalyk

Pavel Chalyk

Tech Lead, ADEO Services

avatar for Quentin Delignon

Quentin Delignon

Lead Software Engineer, ADEO Services
Quentin Deligon (Adeo Services)
Lead Software Engineer in Observability team in Adeo. Innersource and OpenSource enthusiast.
avatar for Sylvain Germe

Sylvain Germe

Decathlon
Expertise in Observability, APM and Load testing since 10 years.
Developer and OpenTelemetry contributor
CPE Product Manager for Observability Tools
Tuesday May 26, 2026 16:15 - 16:45 CEST
4 - MEDIUM STAGE

17:00 CEST

From autocomplete to AI teammate: Supercharging QA automation with GitHub Copilot & MCPs
Tuesday May 26, 2026 17:00 - 17:30 CEST
**From Autocomplete to AI Teammate: Stop Wasting Time with GitHub Copilot**

We have all been there: fighting with AI hallucinations, stuck in endless prompting loops, and spending more time debugging AI-generated code than it would have taken to write it from scratch. AI can actually be a massive time-waster if used poorly.

As a QA Automation Engineer, I decided to stop treating GitHub Copilot as a simple code generator and turned it into a context-aware teammate. In this talk, I will share how to bridge the gap between business requirements and test automation without ever leaving Visual Studio Code.

Through personal stories of my own failures and successes, we will explore how leveraging Model Context Protocol (MCP) integrations for Playwright, Jira/Confluence, and Sonar creates a seamless, time-saving workflow. We will see how providing the *right* business context directly inside the IDE prevents AI hallucinations and generates clean, reliable Java/Playwright tests.

**Key takeaways:**
* **The AI Time Trap:** Why AI makes us lose time and how to fix it with proper context.
* **The "Teammate" Mindset:** Shifting from dumb code generation to smart, context-aware problem solving.
* **Accessible to All:** Practical, easy-to-implement techniques suitable even for junior developers—no AI expertise required.
Speakers
avatar for Franck Bisschop

Franck Bisschop

Decathlon
I have been a Quality Engineer with the SMP teams for a year, marking my third year at Decathlon. I originally joined the company as a full-stack JavaScript developer intern and was brought on board permanently after six months. Having contributed to various products across the company, I eventually transitioned... Read More →
avatar for Kamel Rahim

Kamel Rahim

Quality Automation Engineer, Alten - (Decathlon)
Hello, I'm Kamel! I am a Quality Automation Engineer currently working as a consultant for Decathlon through Alten. My tech journey started as a developer at a startup called OpenIO. I then spent several years at ADEO, where I worked my way up from external Developer and Tech Lead... Read More →
Tuesday May 26, 2026 17:00 - 17:30 CEST
4 - MEDIUM STAGE

17:00 CEST

How we outpaced Europe’s strictest cyber law
Tuesday May 26, 2026 17:00 - 17:30 CEST
How can a sports company outpace the most stringent European cybersecurity laws? In 2020, years before the Cyber Resilience Act (CRA) was finalized, Decathlon's engineering team launched a radical project: the Connected Sports Platform (CSP). While the CSP is a comprehensive Mobile and Cloud ecosystem, this session focuses on the "hardest mile": the devices. We will dive into the technical pillars that now allow our hardware to meet CRA requirements by default: hardware-based identities, hardened communication, and automated software supply chain integrity. Discover how a "Why-first" approach to device security transformed a massive engineering challenge into a competitive advantage.
Speakers
avatar for Julien Littler
avatar for Mahieddine Yaker

Mahieddine Yaker

Decathlon
Mahieddine Yaker is a Tech Project Manager and Embedded Security expert at Decathlon.

With a PhD in IoT and Connected Objects Security, he has spent over 6 years at Decathlon bridging the gap between hardware constraints and digital trust. As one of the early members of the Connected Sports Platform (CSP) team, he has been at the front lines of the company's "cyber-battles... Read More →
Tuesday May 26, 2026 17:00 - 17:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

17:00 CEST

AMAZON - Learning from Amazon: Focus AI/GenAI/Agentic
Tuesday May 26, 2026 17:00 - 17:45 CEST
Amazon’s mission, as stated from its earliest days, is to be the Earth’s most customer-centric company. What Amazon realized as its growth accelerated and its reach extending to tens, then hundreds of millions of customers globally, is that at the speed and scale with which it operates, it is impossible the deliver the best possible experiences for its customers without the practical application of Artificial Intelligence (AI) and Machine Learning (ML) in every aspect of its businesses.
A case in point: Amazon delivered more than 9 billion items in the same or next day around the world in 2024, while at the same time, continuing to lower the cost to serve and improving safety across its network. Achieving success in such environment is not just about achieving incremental improvements through sophisticated analytics to predict customer demand or optimize inventory plans better, but taking a radical approach to tackle every possibility to reimagine and reinvent with a bold ambition for how AI can unlock step-change levels of value for the customers, and the applying the right set of capabilities and enablers to translate these visions into practical and real business outcomes.
This session outlines the strategy and approaches Amazon.com takes to build and scale AI-enabled innovations that translate into compelling value outcome for its customers and partners – e.g., better shopping experiences, faster delivery, more money savings, and enjoying even more success partnering with Amazon. We will share real-life stories from Amazon’s businesses and functions, and explain how these AI innovations transform customers’ experiences while achieving efficiency improvements, speed acceleration, and cost-to-serve reductions. We also share insights into the lessons Amazon teams have learned about the core things that are most important to get right to achieve sustained AI success at an enterprise level through the lens of culture, mechanisms, data, and technology.
Speakers
avatar for Julien LEPINE

Julien LEPINE

Director, Technology, AWS, AMAZON

Tuesday May 26, 2026 17:00 - 17:45 CEST
1 - MAIN STAGE

17:30 CEST

The Vite Ecosystem: From DX to AX, Building the Open-Source Stack for the AI Era
Tuesday May 26, 2026 17:30 - 18:15 CEST
The Vite ecosystem now powers far more than frontend builds. In this talk, Sébastien Chopin explores the key pillars shaping its future: Nitro for full-stack, deploy-anywhere applications; the new Vite DevTools for deep runtime inspection; the Logs SDK for better diagnostics in development; and Comark for building performant AI agents when dealing with Markdown. A technical tour of what's shipping now, rooted in open-source practices and a relentless focus on developer experience.
Speakers
avatar for Sébastien Chopin

Sébastien Chopin

Nuxt Author, Vercel
Sébastien Chopin, known as Atinux and the creator of Nuxt.js, serves as Director of Engineering at Vercel following the 2025 acquisition of NuxtLabs, where he was CEO, advancing full-stack Vue.js frameworks like Nuxt and Nitro.
A leading voice in the JavaScript ecosystem, he empo... Read More →
Tuesday May 26, 2026 17:30 - 18:15 CEST
2 - GRAND PAVILION

17:45 CEST

Paramethor: Leveraging feature flipping for Decathlon
Tuesday May 26, 2026 17:45 - 18:15 CEST
How can hundreds of in-store applications adapt instantly to the specificities of a country, a sport, or even a single user, without any code deployment? This is the challenge we took on with**Paramethor**.

In this presentation, we will look back at the genesis of this product, born from a critical need at Decathlon: **reducing Time-to-Market** (TTM) and avoiding the sprawl of configuration databases. We will explore how we built a robust solution consisting of a high-performance backend, an intuitive admin interface, and a real-time notification system via Kafka to inform applications of every change.

We will dive into the technical heart of the rules engine, specifically our **prioritized** search strategies. You will discover how we manage the complexity of business contexts (Store, UID, Country, third-party type, etc.) to offer extreme granularity in controlling features and configuration values.

**Key points covered :**
* **Why ?** Shifting from rigid configuration to total autonomy for both business and technical teams.
* **How ?** Technical architecture, exception management, and conflict resolution strategies based on priority.
* **Impact :** Reducing operational costs, securing deployments, and accelerating In-Store innovation.
Speakers
avatar for Yevhen Leliukhin

Yevhen Leliukhin

Decathlon Digital
avatar for Benjamin Lafit

Benjamin Lafit

Decathlon
## Product Manager - Tech For In-Store

Passionné par l'innovation technologique et son application concrète, j'occupe actuellement le poste de **Product Manager chez Decathlon Digital**, où je supervise un écosystème de produits techniques critiques pour nos opérations en... Read More →
Tuesday May 26, 2026 17:45 - 18:15 CEST
4 - MEDIUM STAGE
 
Wednesday, May 27
 

09:00 CEST

Software supply chain attack: Overview of current cybersecurity threats
Wednesday May 27, 2026 09:00 - 09:30 CEST
As software ecosystems grow more complex, Software Supply Chain attacks are evolving from manual exploits to AI-driven automation. This session explores the rising trend of attackers compromising packages and extensions to bypass traditional corporate defenses. We will deep-dive into:
- Corporate Risks: Understanding the impact of automated dependency poisoning.
- Case Study: A concrete analysis of Shai-Hulud 2.0 and how AI scales these threats.
- Strategic Vision: Our roadmap to harden our development lifecycle and prevent such scenarios from impacting our infrastructure.
Speakers
avatar for Quentin Torres

Quentin Torres

Cybersecurity Architect, Leroy Merlin France
Cybersecurity Architect for Leroy Merlin France (3 years), currently leading security for the Kbane and Leroy Merlin Rénovation BUs. I also oversee the Information Protection strategy for the entire French Region within Adeo Services, bridging technical architecture with strategic... Read More →
avatar for Sébastien Baillet

Sébastien Baillet

Security expert, Ext - ADEO Services
CTO & Cybersecurity expert at LUPISE
Wednesday May 27, 2026 09:00 - 09:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

09:00 CEST

The day we stopped publishing Kafka events from our order API and why it strengthened our event-driven architecture
Wednesday May 27, 2026 09:00 - 09:30 CEST
This talk will present how we addressed the “dual write” issue we had in our Gifting Order Management solution between our database and our Kafka cluster, causing data inconsistencies and complicated error handling.

The answer ? A simplified version of the Outbox pattern—leveraging a Debezium connector to reliably decouple database writes from Kafka event publishing and using our Order table as the outbox table to simplify the solution.

This architectural shift resulted in a simpler, more robust Order API, eliminating Kafka-specific code and complex error handling. This loosely coupled architecture also offers consumer-driven business logic with easier extensibility.

Join this talk to learn how this architectural decision strengthened our event-driven architecture and discover the crucial details of configuring Debezium—including heartbeat and monitoring—to ensure stability and avoid database disk space issues.
Speakers
avatar for Virginie Zinck

Virginie Zinck

Staff Engineer, Decathlon


Wednesday May 27, 2026 09:00 - 09:30 CEST
3 - LAB 135 Rue Sadi Carnot, Ronchin, France

09:00 CEST

DECATHLON X ADEO - The great debate on the indomitable quality of application repositories
Wednesday May 27, 2026 09:00 - 09:45 CEST
The year is 26 after 2000. Digital repositories are fully operational and up-to-date. Well not entirely… Few small application repositories still hold out against some architectural qualities: discoverable, trustworthy, easily consumable, usefulness?
And life is not easy for these repositories: IDPix, LeanIX & Tangramix.

A great Decathlon - ADEO Leroy Merlin FR debate will be organized around these thematix to share best and bad practices:
- « Aren’t my data fresh? » : how we continuously insure the data freshness of our repositories?
- « I’m not fat, I'm just big boned! »: how do we add new data in our repositories and discard deprecated ones?
- « These Repos are crazy! » : how do we promote IT use cases on top of these repositories (Dev, Architecture, FinOps, IA…)?

Text by Ahmed, Fabien, Gauthier and Laurent & Drawing by Uderzo.
Speakers
avatar for Gauthier Lebrun

Gauthier Lebrun

Enterprise Architect - Decathlon Value Chain, Decathlon
At Decathlon since 1998, in IT as Network and Security engineer (8years), Technical Project Manager, and Technical Architect for Logistics Teams for 9 years.

Since 2021, I'm an Enterprise Architect for the Decathlon Value Chain (extended Supply chain) domain.
avatar for Laurent Brisse

Laurent Brisse

Enterprise Architect (TOC Chair), Leroy Merlin France
- Lead Enterprise Architect in LMFR since 2022 : https://www.linkedin.com/in/laurent-brisse-a8577b5/
- Co-founder & Curator of Archilocus IT Architecture Meetup since 2019 (16 sessions, 59 speakers): https://archilocus.tech
My job is centered on helping teams to evolve in the Dig... Read More →
avatar for Ahmed Kaci

Ahmed Kaci

Digital Product Manager, Decathlon
# Ahmed KACI
## Decathlon
### Digital Product Manager

Product Manager with 7 years of experience in designing, developing, and launching digital products. Throughout my career, I’ve helped transform digital solutions into true growth levers by working at the intersection of design, technology, and product strategy. I’ve worked across... Read More →
FD

Fabien Deleplanque

Head of Entreprise Architecture, Leroy Merlin France
Wednesday May 27, 2026 09:00 - 09:45 CEST
4 - MEDIUM STAGE

09:45 CEST

Software ate the world, is AI eating software?
Wednesday May 27, 2026 09:45 - 10:15 CEST
In 2011, Marc Andreessen famously declared: *"Software is eating the world"*. Today, with the massive adoption of Generative AI, a new existential question is echoing through the tech industry: is AI eating software... and our jobs along with it?

Fueled by mind-blowing code generation demos, the myth of the disappearing Software Engineer is stubbornly persistent. Yet, the reality on the ground is far more nuanced. While AI excels at generating simple solutions or writing code in languages heavily represented in open-source repositories (like Python or JavaScript), its limitations become glaringly obvious when faced with complex algorithms or languages with limited training data.

In this talk, as Directors of Engineering, we will look past the hype to analyze what the future truly holds for our industry. We will tackle the real challenges awaiting our development teams, which are far removed from simply being replaced by machines.

**Key Takeaways:**

* **The Myth of the Obsolete Engineer:** Why the end of software engineering is an illusion, and where the real limits of AI lie (algorithmic complexity, lack of training data for specific or proprietary tech).
* **The Vendor Lock-in Trap:** How reliance on large AI models is redrawing the landscape of technological lock-in for our architectures.
* **The New Skill Matrix:** How to rethink the career path from Junior to Senior in an era where AI handles writing the "easy" code.
* **The Impact on the Broader Ecosystem:** Engineering doesn't operate in a vacuum. How does the AI era redefine the roles and interactions of QA, Support, Product Management, and Ops?

Whether you are a Software Engineer seeking direction for your career, an Engineering Manager preparing your team for the future, or a stakeholder in the tech ecosystem, join us to map out the true challenges of this new era. Code isn't dead, but the way we build it has changed forever.
Speakers
avatar for Serguei Smirnov

Serguei Smirnov

Director of Engineering, Decathlon
I am Serguei Smirnov, currently Director of Engineering HR & Finance at Decathlon Digital. I started my career 20 years ago hands-on in the code as a developer, before spending nearly 16 years at ADEO Group. There, I had the opportunity to lead major international transformation projects... Read More →
avatar for Marco Mornati

Marco Mornati

Director of Engineering, Decathlon
**Marco Mornati** *Director of Engineering, Decathlon Digital* Marco Mornati is the Director of Engineering at Decathlon Digital, where he leads teams in building global omnichannel retail experiences. With over 20 years of experience spanning DevOps, scalable cloud architecture... Read More →
Wednesday May 27, 2026 09:45 - 10:15 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

10:00 CEST

Giving hands to your AI: Building MCP servers with Java & Spring AI
Wednesday May 27, 2026 10:00 - 11:30 CEST
In 2026, "just chatting" with an AI isn't enough. We need agents that can act: query a database, trigger a deployment, or check real-time stock levels. Enter the Model Context Protocol (MCP)—the universal standard for connecting AI models to local and remote data sources.

This hands-on lab is a deep dive into building the "connective tissue" of modern AI. Using Spring AI, we will move beyond basic API calls to develop robust MCP Servers in Java. You will learn how to expose your existing business logic as "tools" that any LLM can discover and use securely. By the end of this session, you’ll know how to transform your Java applications into specialized plugins that give your AI the "hands" it needs to interact with your enterprise systems.
Speakers
avatar for Cyril Gambis

Cyril Gambis

Decathlon
After completing my Master's degree in Computer Science & Applied Mathematics at a Grenoble engineering school (2002), I developed a strong passion for emerging technologies and systems architecture.

My career has taken me through a diverse range of environments, from IT consulting firms and investment banks to software companies and startups. I have now joined Decathlon to help drive its technological advancement. My core specialty lies in distributed systems and microservices... Read More →
Wednesday May 27, 2026 10:00 - 11:30 CEST
⚽️ PRACTICE ZONE #2 135 Rue Sadi Carnot, Ronchin, France

10:30 CEST

Migration of last mile from Scala to JavaxAI (Copilot)
Wednesday May 27, 2026 10:30 - 11:00 CEST
We are excited to present our Copilot-accelerated migration of the Last Mile product from Scala to Java. Last Mile is a critical tool for Leroy Merlin France, designed to streamline the sales, management, and tracking of over 1.2 million deliveries every year. By ensuring operational excellence, it acts as a primary driver of our customer satisfaction. We want to talk about the project's context, our core goals, the step-by-step migration process, and our key learnings.
Speakers
avatar for Julien Villalpando

Julien Villalpando

Full-stack Developer, ADEO Services
Hello, I'm Julien Villalpando. My journey here actually began in-store in Leroy Merlin Beauvais, which gave me great on-the-ground experience. From there, I moved to the DXD Team within the Supply Chain at Leroy Merlin France. Today, I'm a Full Stack Developer in the SCDP Team, working... Read More →
avatar for Mathieu Waroquet

Mathieu Waroquet

Product Manager, ADEO Services

Wednesday May 27, 2026 10:30 - 11:00 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

10:30 CEST

Make your production deployments more reliable and secure with release management
Wednesday May 27, 2026 10:30 - 12:00 CEST
This 90-minute Hands-on Lab invites you to discover a new approach by leveraging the power of the Release Management. The goal is simple: turn every deployment into a "non-event"—perfectly predictable, repeatable, and secure.

On the agenda (100% hands-on):

- Express Onboarding: Get hands-on with the platform and onboard your digital product in minutes.
- Standardization & Promotion: Create your product releases and use promotion pipeline templates to ensure consistent reliability across all environments.
- Guardrails & Robustness: Use automated checks and compliance policies to block errors before they ever reach production.
- Visibility & Governance: Track and manage your deployments via a unified dashboard for total control.

The result? You'll be autonomous to transform your digital product in the new culture of the Release Management!

Ready to deploy your next release Friday evening?
Speakers
avatar for Xavier Baude

Xavier Baude

Staff Engineer, ADEO Services
Joachim: Lead Engineer - Engineering Platform
Xavier: Staff Engineering - Delivery Solutions
avatar for Joachim Dorchies

Joachim Dorchies

ADEO Services
Joachim Dorchies: Lead Engineer - Engineering Platform, Delivery Solutions
Wednesday May 27, 2026 10:30 - 12:00 CEST
🏐 PRACTICE ZONE #4 135 Rue Sadi Carnot, Ronchin, France

10:30 CEST

Valkey: Back to basics
Wednesday May 27, 2026 10:30 - 12:00 CEST
Most developers know **Valkey** as a high-performance distributed cache, but how many truly leverage its potential as a versatile data structure server? If you've only ever used `GET` and `SET`, you are missing out on the features that make Valkey a Swiss Army knife for modern architectures.

In this codelab, we will strip away the abstractions and go back to basics. Using a practical, step-by-step approach, you will interact with Valkey through its CLI and understand its core mechanisms.

**Pre-requisite:** come with Docker installed

**Note:** Valkey is an open-source, high-performance key-value store that was created as a fork of Redis (specifically version 7.2.4) following its transition to a non-open-source licensing model.
Speakers
avatar for Antoine Barth

Antoine Barth

Senior Software Engineer, Decathlon
Having started coding in my teens, I have spent over a decade turning logic into reality.
My professional journey took me through the demanding world of game development before I joined Decathlon, where I currently serve as a Senior Software Engineer.

With 12 years of experience under my belt, I am a firm advocate for contract first and a dedicated practitioner of the RTFM philosophy ; believing that the best solutions are often found by mastering the foundations... Read More →
Wednesday May 27, 2026 10:30 - 12:00 CEST
🏀 PRACTICE ZONE #1 135 Rue Sadi Carnot, Ronchin, France

11:15 CEST

Detecting malicious pull requests at scale with LLMs
Wednesday May 27, 2026 11:15 - 11:45 CEST
As AI coding assistants accelerate software development, the volume of pull requests at Datadog has grown to nearly 10,000 per week, increasing the risk that malicious changes slip through due to review fatigue. To address this, Datadog built BewAIre, an LLM-powered code review system designed to identify malicious source code changes introduced by threat actors. By reducing approval fatigue for developers while increasing friction for attackers, BewAIre guides human reviewers to the areas where judgment matters most, without slowing developer velocity.

In this presentation, I will share why BewAIre was built, how it evolved from a hackathon experiment into a production-grade internal system, and the key architectural decisions and trade-offs involved along the way. I will discuss what worked, what didn’t, and the limitations we encountered when applying LLMs to security-critical workflows.
Speakers
avatar for Julien Doutre

Julien Doutre

DATADOG
Software engineer at Datadog, focusing on securing the Software Development Lifecycle thanks to container images signing and supply chain attacks detection with AI.
Wednesday May 27, 2026 11:15 - 11:45 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

12:00 CEST

SAP - Is SAP (Finally) "Cool"? How AI & Open Source are reinventing the ERP Experience
Wednesday May 27, 2026 12:00 - 12:30 CEST
🚀 If the word **"SAP"** still triggers flashbacks of grey screens, clunky transaction codes, and endless PDF documentation... it’s time for an intervention. 🛑

Join us for a **30-minute deep dive** into the ultimate developer glow-up. We’re moving beyond the "legacy" mindset to show you how LLMs and the Model Context Protocol (MCP) are fundamentally rewriting the rules of the game.

In this session, we’ll take a deep dive into this transformation of the developer experience:

🤖 How an SAP developer can go from a natural language prompt **to ABAP/RAP** code that is generated, validated, and deployed directly to their system — all powered by AI.
🧠 We'll cover how **LLMs work** and how to leverage them effectively in an SAP context, prompting strategies and the art of orchestrating RAP and Fiori code generation, the **Model Context Protocol (MCP) ** and how it bridges AI with your SAP tooling — **ADT, documentation, the Cloudification Repository**.

🌍 **Who is this for?**
Whether you’re an **ABAP dev or a dev** curious about the "New SAP," come see how we’re building the future today.

No more "tomorrow"—the AI-powered ERP is already here.
Speakers
avatar for Aurelie Laude

Aurelie Laude

Lead Engineer, ADEO Services
I'm a Lead Engineer into SMART Platform with several years of experience in ABAP, SAP Backend. I'm interesting by code quality and AI-driven development. I try knowledge sharing together, ensuring teams align on best practices to deliver high-quality, scalable solutions.
avatar for Clement Ringot

Clement Ringot

Full-stack Developer, ADEO Services
I am a SAP Software Engineer with several years of experience in ABAP, Fiori, BTP and AI. I have worked on various projects in France and Canada, covering both on-premise and cloud environments. Passionate about SAP development and best practices, I have created my website Abapeur... Read More →
Wednesday May 27, 2026 12:00 - 12:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

14:00 CEST

Beyond the hype: The "Day 2" guide to vector search in production
Wednesday May 27, 2026 14:00 - 14:30 CEST
Vector Search has quickly moved from a niche ML requirement to a core capability for modern applications. But while "Hello World" tutorials make it look easy, the reality of managing high-dimensional data at scale is a different story. What happens when you change your embedding model? How do you handle the cost of indexing millions of vectors? How do you avoid the "black box" performance trap?

In this session, we move past the AI hype to look at the practical realities of implementing Vector Search. Drawing from real-world experiments to production, we will compare how major players like MongoDB, Elasticsearch, and OpenSearch handle vector workloads differently.


**Attendees will walk away with:**

* **A "Go/No-Go" Framework:** When to use Vector Search vs. when traditional keyword search is actually superior.
* **Managing the Lifecycle:** Strategies for handling breaking changes in embeddings and re-indexing strategies that won’t crash your production environment.
* **Optimization Tactics:** Practical ways to reduce vector dimensionality and latency without sacrificing retrieval quality.
* **The Cost-Benefit Matrix:** A direct comparison of performance vs. infrastructure overhead across different database providers.

Whether you are a Software Developer that is working for RAG / Search / Recommendation systems or an ML Engineer, this talk provides the "missing manual" for building search systems that are as maintainable as they are "intelligent."
Speakers
avatar for Guilherme De Freitas Guitte

Guilherme De Freitas Guitte

Staff Engineer - Recommendations, ADEO Services
Staff Engineer at ADEO (Leroy Merlin, Bricoman), technical leader in recommendation systems. With 15 years of experience in developing publication systems for e-commerce platforms, he now drives and builds the technical vision / strategy of an omnichannel, multi-country recommendation... Read More →
avatar for Jesse Peixoto

Jesse Peixoto

Back-End Developer, ADEO Services

Wednesday May 27, 2026 14:00 - 14:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

14:00 CEST

From reaction to control: boosting regional reliability with a 24/7 service control room.
Wednesday May 27, 2026 14:00 - 14:30 CEST
What is it?:
As the IT nerve center and Reliability Hub, the Operations Room ensures business continuity, safeguarding systemic health and providing uninterrupted access to critical regional services.

The team:
Reliability Excellence & Specialization
We are evolving toward an SRE (Site Reliability) as a Service model, where the service control room acts as the operational partner that guarantees stability:

Service control room: The 24/7 Reliability Guardian , Agents doing the 24x7 job based on human experience
Resilience & Integrity: Active 24/7 supervision to ensure regional business never stops.
Observability & Automation: A team dedicated to transforming data into preventive actions and automating resolutions to anticipate failures.
Off-Peak Incident Management: We proactively resolve issues overnight, eliminating technical debt and preventing "morning dramas."
Reliability-focused Deployments: We centralize and supervise production deployments and opening configurations, acting as the safety net that validates every change in real-time.

Future vision:
Within the Digital Regions framework, our goal is to lead High-Availability Operations. We are more than just monitoring; we are the team that 'clears the path' for the region, absorbing technical complexity and managing critical overnight tasks to ensure our regional business wakes up operational, stable, and ready to grow, every single day.
Speakers
avatar for Antonio Arcos Muñoz

Antonio Arcos Muñoz

Leroy Merlin España

Wednesday May 27, 2026 14:00 - 14:30 CEST
4 - MEDIUM STAGE

14:00 CEST

ADS2 towards AI-Native: Our ongoing journey to make the Design System a pivot tool
Wednesday May 27, 2026 14:00 - 15:30 CEST
AI agents are making their way into designers' and developers' workflows. Standards are shifting fast, and best practices are still being written. That's exactly why we chose to move rather than wait.
This session shares our ongoing thinking around ADS2: how to position a design system as an AI-ready resource, so it remains a reliable anchor in these new ways of working. Without that foundation, vibe coding and vibe design tools — as powerful as they are — generate inconsistency at scale and build up technical and visual debt that's hard to recover from.
We'll walk through what we've built so far: documentation rearchitected to be machine-readable, early use cases around skills, agents and MCP to streamline component integration, support teams on best practices, and generate interfaces grounded in our guidelines. This space moves fast and changes every day — our goal is to make sure the design system is ready at every major turn.
Speakers
avatar for Martin Molcrette

Martin Molcrette

Design System Engineer • Product Designer, Adeo Services
Product Designer & Design System Engineer at ADEO.
I work at the intersection of design, engineering, and AI, exploring how design systems, tokens, and automation can help teams build scalable and consistent products.
AG

Antoine Guiot

Front-end developer, External - ADEO Services
avatar for Charles-Antoine Queste

Charles-Antoine Queste

Head of Design Ops, ADEO Services

Wednesday May 27, 2026 14:00 - 15:30 CEST
🏐 PRACTICE ZONE #4 135 Rue Sadi Carnot, Ronchin, France

14:00 CEST

Make your production deployments more reliable and secure with release management
Wednesday May 27, 2026 14:00 - 15:30 CEST
This 90-minute Hands-on Lab invites you to discover a new approach by leveraging the power of the Release Management. The goal is simple: turn every deployment into a "non-event"—perfectly predictable, repeatable, and secure.

On the agenda (100% hands-on):

- Express Onboarding: Get hands-on with the platform and onboard your digital product in minutes.
- Standardization & Promotion: Create your product releases and use promotion pipeline templates to ensure consistent reliability across all environments.
- Guardrails & Robustness: Use automated checks and compliance policies to block errors before they ever reach production.
- Visibility & Governance: Track and manage your deployments via a unified dashboard for total control.

The result? You'll be autonomous to transform your digital product in the new culture of the Release Management!

Ready to deploy your next release Friday evening?
Speakers
avatar for Xavier Baude

Xavier Baude

Staff Engineer, ADEO Services
Joachim: Lead Engineer - Engineering Platform
Xavier: Staff Engineering - Delivery Solutions
avatar for Joachim Dorchies

Joachim Dorchies

ADEO Services
Joachim Dorchies: Lead Engineer - Engineering Platform, Delivery Solutions
Wednesday May 27, 2026 14:00 - 15:30 CEST
⚽️ PRACTICE ZONE #2 135 Rue Sadi Carnot, Ronchin, France

14:45 CEST

Democratizing quality: Using AI to empower non-dev contributors and prepare scalable test automation
Wednesday May 27, 2026 14:45 - 15:15 CEST
Increasing automated test coverage is often less about tools and more about creating the right foundations.

In this talk, we will share how our mobile team dramatically increased unit test coverage in a Flutter codebase — **from 8% to 80% in four months** — by combining AI-assisted development and systematic improvements in application testability.

We leveraged shared prompts with GitHub Copilot to help developers generate unit tests across multiple use cases. In parallel, we introduced semantics and tags throughout our UI architecture, from our design system (ADS) to shared component libraries (ACC, ADC) and the application itself.

This instrumentation allowed QA engineers to **gain autonomy** and start preparing UI automation independently, without constantly relying on developers.

We will share the practical lessons from this journey: what worked, what didn’t, and how these foundations enabled us to launch our UI automation strategy. We will also share what are our future plans to give more tools to contributors with a less technical background.
Speakers
avatar for Marion Livoy

Marion Livoy

Quality Engineer, Ext - ADEO Services

avatar for Alexandre Mardon

Alexandre Mardon

Lead Engineer, ADEO Services
Alexandre MARDON
Lead Engineer for the Customer Mobile Application at Adeo
Wednesday May 27, 2026 14:45 - 15:15 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

15:00 CEST

Live coding the hive: Building a micro services ready modular monolith
Wednesday May 27, 2026 15:00 - 15:45 CEST
After a decade, the industry has realized that poorly designed microservices can easily turn into a distributed monolith, often more problematic than the spaghetti monolith they aimed to address. To tackle this issue, the concept of a modular monolith is emerging as an alternative approach.

However, the challenge still lies in effectively splitting it without falling into the pitfall of tightly coupled modules. The Hive pattern helps you build a microservices-ready modular monolith, by leveraging multiple hexagonal architectures and vertical slicing, each module is loosely coupled and ready to be extracted as a separate service.

During this live coding session, we will begin with a legacy spaghetti monolith and migrate it step-by-step to a Hived modular monolith, wrapping up with a demonstration of extracting a module and transforming it into a separate micro-service.
Speakers
avatar for Julien Topçu

Julien Topçu

CTO, Shodo
Julien est un CTO et Tech Coach avec 15 ans d'expérience, spécialisé dans le Domain-Driven Design (#DDD). Son expertise réside dans l'aide aux organisations pour construire des systèmes à forte valeur métier. Julien se concentre sur l'alignement de l'organisation, de l'architecture... Read More →
avatar for Thomas Pierrain

Thomas Pierrain

VP of Technology, Shodo.io

Wednesday May 27, 2026 15:00 - 15:45 CEST
2 - GRAND PAVILION

15:30 CEST

From individual contributor to management: How to become "Scalable" beyond code?
Wednesday May 27, 2026 15:30 - 16:00 CEST
You have spent years designing robust architectures, optimizing system performance, and automating everything that can be. As an Individual Contributor (IC), your impact is clear, measurable, and direct. But there comes a time when, to truly move the needle, you need to change your paradigm: what if your next scalability challenge wasn't technical, but human?

Moving from a technical expert role to a manager role should not be seen as a "promotion" up the hierarchy, but as a transition to a completely new profession where your success depends on the success of others. This is the story of moving from individual optimization to building a system capable of growing without you being a Single Point of Failure (SPOF).

Through this feedback from a former architect and open-source enthusiast turned Engineering Manager, we will explore the stages of this mutation:

* **Daily Impact:** How to redefine your "Definition of Done" when you no longer produce code?
* **Becoming Scalable:** Learning to delegate not to offload work, but to multiply the organization's impact.
* **Technical Legitimacy:** How to remain a credible peer without becoming your team's bottleneck.
* **Beginner Pitfalls:** Identifying common "bugs" for new managers (micromanagement, keyboard withdrawal, imposter syndrome).

This talk is for anyone questioning their future career path: should I remain an expert or switch to management? The goal is to provide concrete keys to successfully making the leap, understanding that management is ultimately about designing an architecture where humans are the most precious and complex components.

**Keywords:** Leadership, Engineering Management, Career Path, Transition, Scalability, Soft Skills, Feedback, Coaching.
Speakers
avatar for Marcel Marquez

Marcel Marquez

Head of Engineering, ADEO Services
A former biologist turned Java enthusiast and software craftsmanship advocate, I spent a decade as a Software Architect shaping technical governance and best practices within large-scale organizations. Currently a Head of Engineering, I lead Staff Engineers and QA teams focused on... Read More →
Wednesday May 27, 2026 15:30 - 16:00 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

16:00 CEST

Giving hands to your AI: Building MCP servers with Java & Spring AI
Wednesday May 27, 2026 16:00 - 17:30 CEST
In 2026, "just chatting" with an AI isn't enough. We need agents that can act: query a database, trigger a deployment, or check real-time stock levels. Enter the Model Context Protocol (MCP)—the universal standard for connecting AI models to local and remote data sources.

This hands-on lab is a deep dive into building the "connective tissue" of modern AI. Using Spring AI, we will move beyond basic API calls to develop robust MCP Servers in Java. You will learn how to expose your existing business logic as "tools" that any LLM can discover and use securely. By the end of this session, you’ll know how to transform your Java applications into specialized plugins that give your AI the "hands" it needs to interact with your enterprise systems.
Speakers
avatar for Cyril Gambis

Cyril Gambis

Decathlon
After completing my Master's degree in Computer Science & Applied Mathematics at a Grenoble engineering school (2002), I developed a strong passion for emerging technologies and systems architecture.

My career has taken me through a diverse range of environments, from IT consulting firms and investment banks to software companies and startups. I have now joined Decathlon to help drive its technological advancement. My core specialty lies in distributed systems and microservices... Read More →
Wednesday May 27, 2026 16:00 - 17:30 CEST
🏐 PRACTICE ZONE #4 135 Rue Sadi Carnot, Ronchin, France

16:00 CEST

Let's build backends! A Hands-on guide to Kotlin & Spring Boot
Wednesday May 27, 2026 16:00 - 17:30 CEST
Ready to dive into modern backend development? Come join our hands-on workshop where we'll show you how to use **Kotlin** to build awesome **server-side apps**! We'll be focusing on how smoothly Kotlin works with the popular **Spring Boot** framework.

### Workshop content

We'll get our hands dirty with lots of practical examples and live coding. First up, we'll get a Kotlin and Spring Boot project running to show you just how clean and simple it can be. Then, you'll learn how to create clear and safe RESTful APIs using Kotlin's handy MVC DSL, which makes setting up routes a breeze.

A big part of our session will be getting the hang of asynchronous programming with Kotlin Coroutines. We'll show you how to handle tricky, long-running tasks and build super-responsive apps without getting tangled up in callbacks. And, of course, we have to talk about one of Kotlin's best features: its null-safety! We'll show you how it helps you wave goodbye to those annoying NullPointerExceptions for good, making your code way more reliable.

### Who is this for? (Prerequisites)

- You should know your way around Java and the Maven build tool.
- It helps to have a basic idea of what Spring Boot is all about.

### Outcomes

By the end, you'll walk away with the real-world skills and confidence to **start building your own backend services with Kotlin and Spring Boot**.
You'll be all set to write code that's cleaner, safer, and way more efficient!
Speakers
avatar for Thibault Duperron

Thibault Duperron

Decathlon
*Technical Lead & Developer*

A passionate technical leader with **over 14 years of experience** specializing in building custom, scalable applications. His career is marked by key roles at major tech companies like **Decathlon Digital** and **Talend**.

* **Core Expertise:** Sca... Read More →
avatar for Damien Raude

Damien Raude

Decathlon
Damien Raude-Morvan is a _Senior Staff Software Engineer_ at **Decathlon Digital**, where he contributes to the technical strategy for the “In Store” domain. His technical focus includes Observability, Architecture, Performance and IA.

With 20 years of experience in the digi... Read More →
Wednesday May 27, 2026 16:00 - 17:30 CEST
🏈 PRACTICE ZONE #3 135 Rue Sadi Carnot, Ronchin, France

16:15 CEST

Security starts in the code: Why security by design matters
Wednesday May 27, 2026 16:15 - 16:45 CEST
In today's digital platforms, security incidents rarely start with hackers, they start with design decisions.

Modern applications are built on complex ecosystems of APIs, microservices, cloud-native infrastructure, and rapidly evolving development pipelines. In this environment, vulnerabilities are often unintentionally introduced during the earliest phases of software design and development.

Yet in many organizations, security is still treated as a final checkpoint rather than a foundational design principle.

This talk challenges that mindset.

We will explore why Security by Design must become a core engineering discipline, embedded directly into software architecture, development workflows, and product innovation. By shifting security earlier into the development lifecycle, organizations can significantly reduce vulnerabilities, accelerate innovation, and build digital platforms that are resilient by default.

Through practical insights and real-world lessons from large-scale digital ecosystems, this session will demonstrate how developers, architects, and security teams can collaborate to transform security from a blocker into an enabler of innovation.

Because in modern digital systems, security is not something you add, it is something you design.
Speakers
avatar for Fabiana Mayumi Tanaka

Fabiana Mayumi Tanaka

Head of Cibersecurity, Leroy Merlin Brazil
Fabiana Tanaka is the CISO, Head of Cibersecurity and Digital Resilience at Leroy Merlin Brazil.

With more than 18 years of experience in cybersecurity, Fabiana has led security transformation programs across multiple industries including finance, healthcare, logistics, retail, and payment systems. She is responsible for strengthening cyber resilience, data protection, and security... Read More →
avatar for Kleber Augusto Chiles Pereira

Kleber Augusto Chiles Pereira

Cybersecurity, Obramax Brazil
Kleber Pereira is a Cybersecurity Digital Leader at Obramax Brazil and a university professor. He focuses on building cybersecurity programs centered on operational resilience, risk management, and security culture, connecting technology, processes, and people to strengthen cybersecurity... Read More →
Wednesday May 27, 2026 16:15 - 16:45 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

17:00 CEST

Designing for unstable networks: Improving mobile UX with offline-ready architecture
Wednesday May 27, 2026 17:00 - 17:30 CEST
In-store mobile apps live and die by their network. At ADEO, our store associates use a Flutter app to scan barcodes, browse product pages, display loyalty barcodes and serve customers across 500+ stores, where network conditions range from excellent WiFi to near-dead mobile signal in the same building. Even in the biggest stores, the customer may encounter mixed ROPO experience.

In this crucial step to make the CMA a real companion for in-store experience, we will share how we worked on improving the resilience of our mobile application to network conditions in order to protect the user experience.

This talk covers the full arc: the business decision to move beyond online/offline, the UX design of a degradable interface, the technical architecture behind the state machine, the field experiment that broke our assumptions, and the iterative loop that made it all converge.

Attendees will leave with a reusable pattern, real data, and a practical framework for building mobile experiences that stay usable. We're on the road to a 5-star app by ensuring seamless performance and exceptional user experience, even in tough network conditions.
Speakers
avatar for Thomas D'hulst

Thomas D'hulst

Mobile software engineer - CMA, Ippon Technologies


avatar for Florent Codet

Florent Codet

Product designer, ADEO Services


Wednesday May 27, 2026 17:00 - 17:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

17:30 CEST

REDHAT - These five tricks can make your apps greener, cheaper, & nicer
Wednesday May 27, 2026 17:30 - 18:15 CEST
The code we write has a climate impact. But how big is that impact? How do we measure it? How do we reduce it? Is the cloud helping? What’s going on with Virginia? Are we still allowed to do CI/CD? Will native compilation save us? Is Java even a good choice anymore? This talk discusses some of the trade-offs for a modern software developer, and provides a roadmap to figuring out the right thing.
Speakers
avatar for Holly Cummins

Holly Cummins

Senior Principal Software Engineer, RedHat

Wednesday May 27, 2026 17:30 - 18:15 CEST
1 - MAIN STAGE
 
Thursday, May 28
 

09:00 CEST

Building secure, enterprise-grade MCP servers at scale
Thursday May 28, 2026 09:00 - 09:30 CEST
As LLMs become central to our workflows, the challenge shifts from "how to prompt" to "how to give AI secure access to our data" enter the Model Context Protocol (MCP).
In this session, we will demystify MCP servers and explain why they are the missing link in enterprise AI orchestration.
I will introduce the ADEO way of doing MCP servers with a toolkit designed to ensure that every AI tool we build remains compliant with our internal standards.
We will cover how to ensure all MCP servers implement OAuth 2.0, integrate seamless observability so teams can focus on adding value with MCP servers.
Learn how to empower AI agents while keeping ecosystem secure, observable, and standardized
Speakers
avatar for Tanguy Baudrin

Tanguy Baudrin

Staff Engineer, SFEIR
D'abord développeur généraliste pendant 10 ans, j’ai ensuite passé 6 ans sur des infrastructures Cloud et DevOps. Aujourd'hui je me spécialise dans l’IA générative chez SFEIR. Mon expertise transverse me permet aujourd'hui d’accompagner chez ADEO les ingénieurs dans... Read More →
Thursday May 28, 2026 09:00 - 09:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

09:00 CEST

In-store observability
Thursday May 28, 2026 09:00 - 09:30 CEST
We would like to talk about the observability of our physical stores.

There are many different types of devices in the stores: POS terminals, various scanners, displays, receipt printers connected to them, customer self-checkout stations, electronic queue terminals, printers, consultants’ computers, and so on. At the same time, physical stores also contain a large amount of network infrastructure — Wi-Fi access points, routers, firewalls, the physical network itself, and internet connectivity.

Unfortunately, devices sometimes fail, internet providers occasionally violate their service levels, and our services running in GCP can become unavailable for specific stores or specific business units due to new releases or changes in network or firewall configurations. In many cases, we learn about these issues quite late — only when customers encounter problems while paying for their purchases.

Last year, the Observability Adeo team worked very closely with the LMIT, LMPT, BROM, and LMFR teams to implement observability for this entire infrastructure. We designed an observability architecture for store devices based on OpenTelemetry, while the network team is implementing a solution for collecting network metrics based on Zabbix. Using data from both sources, we can build comprehensive dashboards that show the real state of the infrastructure inside our stores, allowing us to detect and respond to incidents in a timely manner.

We already have concrete implementations of this solution in LMIT and LMPT, and we would like to present them together in a joint presentation.
Speakers
avatar for Tiago Vicente

Tiago Vicente

Senior SRE, Leroy Merlin Portugal
avatar for Pavel Chalyk

Pavel Chalyk

Tech Lead, ADEO Services

avatar for Riccardo Nobili

Riccardo Nobili

Network Leader, Leroy Merlin Italy


Thursday May 28, 2026 09:00 - 09:30 CEST
3 - LAB 135 Rue Sadi Carnot, Ronchin, France

09:00 CEST

GOOGLE - The third way: Balancing autonomy and control in AI-Driven DevOps
Thursday May 28, 2026 09:00 - 09:45 CEST
Software teams often face a choice between unmanaged tool adoption or slow approval processes. We present a strategy that uses automated standards (e.g. Platform Engineering) to enable both developer speed and enterprise control.
By organizing hybrid teams (developers and AI agents) around clear boundaries and using internal platforms, organizations can remove manual bottlenecks. This approach replaces support tickets with self-service workflows that have security and compliance built-in.
Attendees will receive a practical roadmap to update their engineering practices for 2026. We will show how to improve performance and stability using industry-standard frameworks and open ecosystems.
Speakers
avatar for Nicolas Pintaux

Nicolas Pintaux

Specialist Customer Engineer, Google

Thursday May 28, 2026 09:00 - 09:45 CEST
4 - MEDIUM STAGE

09:15 CEST

DOCTOLIB - AI first strategy
Thursday May 28, 2026 09:15 - 10:00 CEST

Speakers
avatar for Axel Colin De Verdiere

Axel Colin De Verdiere

Engineering Director, Doctolib
Thursday May 28, 2026 09:15 - 10:00 CEST
1 - MAIN STAGE

09:15 CEST

Being a developer in 2026: From "Vibe Coding" to engineering mastery
Thursday May 28, 2026 09:15 - 10:45 CEST
The "Chat" era is dead. In 2026, the real work happens in the Terminal. Stop the disposable apps and the AI-induced FOMO; it's time to reclaim your craft.

In a world of infinite code generation, Architecture and Maintainability are the only things that separate a resilient product from an unmaintainable liability. We have reached a point where generating code is easy, but controlling it is the true engineering challenge.

Join this 90-minute hands-on lab to cut the noise, kill the "vibe coding," and master the complexity of production-ready software. Step out of the chatbox and learn how to orchestrate true Agentic Workflows.


# Lab Details: 90 Minutes to Deep Dive into 2026 Engineering

This is not a session about writing better prompts; it’s a session about upgrading your entire operating model as a developer. We will build, debug, and secure a complex application by mastering four pillars:

**1\. The Command Center (CLI First)**

Transform your CLI into an autonomous powerhouse. We will move away from passive IDE sidebars and demonstrate how to trigger agents directly from the terminal to execute complex refactoring, run diagnostics, and manage infrastructure in real-time.

**2\. Skills over Chat (Context Engineering)**

Stop prompting, start building. You will learn how to give your environment "Capabilities" (Skills and Context) to automate the grind. By injecting architectural rules and domain constraints directly into the workspace, you allow the agents to focus on your *intent* rather than forcing you to babysit their output.

**3\. The Shadow Team (Agentic Orchestration)**

You are no longer just a coder; you are the Lead Engineer of a digital squad. You will orchestrate specialized AI personas—a Security Auditor, a QA Automator, and an Architecture Reviewer—that act autonomously to challenge your plans, generate E2E tests, and secure your Pull Requests.

**4\. Engineering vs. Tokens (Sustainable Craftsmanship)**

AI can generate a million tokens per minute, but who maintains them? We will focus on the ultimate 2026 skill: System Design. You will learn how to enforce boundaries and review Agent Plans *before* they touch the codebase, ensuring that AI speed never compromises software excellence.


# Participant Prerequisites

* Professional software engineering experience (any modern stack).
* A laptop with a modern IDE and terminal access.
* The mindset of a Tech Lead willing to stop coding everything manually and start orchestrating.
Speakers
avatar for Bertrand Gressier

Bertrand Gressier

Staff Engineer, ADEO Services
For the past 25 years, I have been building software and navigating the incredible shifts in our digital landscape.From my early days developing on mainframes and the birth of the Web, all the way to today's Agentic Web revolution, I have always been driven by the evolution of technology.Currently... Read More →
avatar for Thomas Rumas

Thomas Rumas

Dev Advocate, ADEO Services
Grazia Colucci - Head of UX in Leroy Merlin Italy
Thursday May 28, 2026 09:15 - 10:45 CEST
🏈 PRACTICE ZONE #3 135 Rue Sadi Carnot, Ronchin, France

09:45 CEST

Pushing code to production on friday afternoons with Flagger progressive deployments
Thursday May 28, 2026 09:45 - 10:15 CEST
A broken release on an e-commerce platform can have immediate and important financial impacts. At Decathlon, with dozens of workloads each deployed up to several times a day, the risk of human error-related incident is high.

In that feedback session, we'll share how Flagger enabled us to match velocity and serenity. By automating progressive deploy strategies, we secured the change process : less impacts from unavoidable incidents and more confident developers.

You'll discover our wins, but also the main challenges we faced and overcame along the road.
Expect a comprehensive description of the process with concrete examples, enabling the same implementation, however your kubernetes clusters are configured.
Speakers
avatar for Maxime Veroone

Maxime Veroone

Staff Engineer, Decathlon
Having started to disassemble and reconfigure computers as soon as his parents allowed him too, Maxime has spent most of his life trying to understand how computers, then servers then cloud work and how to optimize them with constrainted resources.
Now a Staff Engineer at Decathlon's Ecommerce, he focuses on continuing down that path into optimizing socio-technical systems at scale... Read More →
Thursday May 28, 2026 09:45 - 10:15 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

10:15 CEST

GITHUB - Specialize your agents with skills
Thursday May 28, 2026 10:15 - 11:00 CEST
This session introduces Agent Skills, a standard designed to specialize AI tools like Copilot using "skills" that combine specific instructions and contextual resources. Through live demonstrations, participants will learn how to create and share these skills to transform a general-purpose AI into a truly adaptable and collaborative business assistant.

During this session, we will also highlight some key skills from Adeo and Decathlon
Speakers
avatar for Pierre LEMPERIERE

Pierre LEMPERIERE

Deputy CTO, Adeo
Thursday May 28, 2026 10:15 - 11:00 CEST
2 - GRAND PAVILION

10:30 CEST

FASTLY - Preparing for the unexpected: Fastly’s seven pillars of network resilience
Thursday May 28, 2026 10:30 - 11:00 CEST
No cloud vendor is immune to outages, but when you're managing a massive, globally distributed network that customers rely on, preparation is everything. Whether it’s unexpected internet outages, sophisticated DDoS attacks or infrastructure failures, resilience is essential to maintain availability.

Join Dennis Mårtensson, Senior Director of Engineering, as he walks through Fastly’s seven pillars of resilience, with real-world examples of how we use automation, AI and ML to address availability challenges, including how our approach to resiliency sets us apart in DDoS protection.
Speakers
avatar for Dennis Mårtensson

Dennis Mårtensson

Senior Director of Engineering, Fastly
Dennis Mårtensson is the Senior Director of Engineering for Developer Products at Fastly. With over a decade of experience, Dennis has worked across the spectrum from founding startups to scaling organizations through IPO.He has led teams building networking technologies, developer... Read More →
Thursday May 28, 2026 10:30 - 11:00 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

10:30 CEST

Double-Blind Security: Come and take on the community architecture and cybersecurity kata challenge
Thursday May 28, 2026 10:30 - 12:00 CEST
## En Français

Titre : La sécurité en double aveugle : venez relever le défi du kata d’architecture et cybersécurité communautaire

Quand on définit un système, est-ce qu’il vaut mieux réfléchir d’abord à l’architecture ou à la sécurité de ce système ? Vous avez une opinion ? Pas nous ! Venez participer à cet atelier, dans lequel nous vous ferons réaliser une succession de katas pour déterminer ensemble quel ordre est préférable, si tant est qu’il y en ait un.

Nous verrons dans ces katas comment intégrer correctement le raisonnement sur la sécurité à la conception de ce système. Nous parlerons évidemment des utilisateurs légitimes de ce système et de leurs besoins de sécurité, mais aussi des utilisateurs moins légitimes et de la façon correcte d’imaginer leurs interactions avec ce système. Pour cela, vous marierez les méthodes d’architecture agile et celles de définition de risque.

Vous ressortirez de cet atelier avec des idées plus claires sur les manières d’avoir des conversations correctes avec les différentes parties prenantes de votre projet en ne mettant ni l’architecture ni la sécurité de côté. Et peut-être avec un bon ordonnancement des questions d’architecture et de sécurité si nous trouvons un consensus.

**Prérequis pour l'atelier** : N'amenez pas votre ordinateur, il ne servira à rien. En revanche, amenez votre capacité de réflexion, elle sera mise en oeuvre.

## In English

When defining a system, is it better to think about the architecture first, or the security? You have an opinion? We don’t! Come join us for this workshop, where we will lead you through a series of katas to determine together which order is preferable—if there even is one.

Throughout these katas, we will explore how to properly integrate security reasoning into the system's design. We will obviously discuss legitimate users and their security needs, but also less legitimate users and the correct way to envision their interactions with the system. To achieve this, you will marry agile architecture methods with risk definition techniques.

You will leave this workshop with clearer ideas on how to have productive conversations with your project’s stakeholders without sidelining either architecture or security. And perhaps, if we reach a consensus, we'll walk away with a solid sequencing for architecture and security questions.

**Workshop Prerequisites**: Do not bring your computer; it will be of no use. Instead, bring your thinking caps—they will be put to work.
Speakers
avatar for Sébastien Baillet

Sébastien Baillet

Security expert, Ext - ADEO Services
CTO & Cybersecurity expert at LUPISE
avatar for Nicolas Delsaux

Nicolas Delsaux

Zenika
Développeur Java pendant 15 ans, je suis devenu depuis quelques années peut-être un peu plus qu'un vieux développeur : un architecte, un référent technique, peut-être un mentor.
J'ai fait du Java dans suffisamment d'environnements différents pour apprendre beaucoup à la fois sur la technique, mais aussi sur le coeur du développement : l'humain... Read More →
Thursday May 28, 2026 10:30 - 12:00 CEST
🏀 PRACTICE ZONE #1 135 Rue Sadi Carnot, Ronchin, France

11:15 CEST

How Copilot is accelerating the migration of our 14-year legacy system to a future-ready solution!
Thursday May 28, 2026 11:15 - 11:45 CEST
As part of a migration project from a legacy, in-house Product Lifecycle Management (PACE) solution, using Copilot helps us accelerate documentation, specification reprocessing, and also develop and test faster.

This talk will allow us to share our learnings and the concrete results we have achieved.

Summary (in progress):
- Context of the migration
- Problems and deadlines
- First try
- Don't do it on your own
- Aim for the moon (trying to scale)
- Setting up a new way to work
- Concrete results
- Learnings
Speakers
avatar for Julien Konczak

Julien Konczak

Decathlon
Director of Engineering for the Sport Process domain, I support the teams that manage solutions for our employees in sports: PLM, offer management, Quality.

Passionate about technical topics and also about our technical culture, I am eager to share our experience and our passion for tech in a domain away from the spotlight... Read More →
Thursday May 28, 2026 11:15 - 11:45 CEST
2 - GRAND PAVILION

12:00 CEST

One lib to rule them all: Building a reusable library
Thursday May 28, 2026 12:00 - 12:30 CEST
In a large-scale tech organization sending an email seems like a solved problem – until you look under the hood and discover that teams keep reinventing the wheel. This leads to massive code duplication, fragmented implementation and lack of centralized observability.

In LMIT we decided to tackle this technical debt by building a reusable library designed as a high-impact MVP. This session is a “return of experience” on the journey of creating a centralized deployment model within our corporate infrastructure, starting from BU Italy with the ambition to scale. We'll dive into the architectural challenges of creating a tool that is robust enough for enterprise scale yet simple enough for developer adoption.

We'll discuss
- How a shared library reduces boilerplate and speeds up the "time-to-market" for new features.
- Our architectural approach to ensure security, traceability, and high deliverability by design, moving away from "every team for themselves".
- Strategies to make the library easy to use, focusing on intuitive APIs, and seamless integration into existing developer workflows.
- The challenges of integrating a common tool into the global infrastructure while maintaining BU autonomy.
Speakers
avatar for Alessandra Turolla

Alessandra Turolla

Full-stack Developer, Leroy Merlin Italy
Full-stack Developer at LMIT since 2021. With a coding journey that started in 2013, I work daily with Vue, Typescript, and Java, primarily focusing on the PDP and HF3P areas. Outside of work, I'm a proud millennial nerd with a deep love for video games and board games – always... Read More →
avatar for Caterina Buccoliero

Caterina Buccoliero

Leroy Merlin Italy


Thursday May 28, 2026 12:00 - 12:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

14:00 CEST

Centralized sites management: Secure your network, simplify your life
Thursday May 28, 2026 14:00 - 14:30 CEST
This presentation will explore how we address the complexities of network management in large-scale environments. In such a landscape, responsibilities are shared between the central and local teams. The central team is in charge of the SD-WAN solution, including providing training and advice to local teams, while the local teams are responsible for their own specific perimeters, which can be one or multiple sites.

A primary goal for us was to ensure that people can manage their perimeter in a simplified and straightforward way, free from excessive complexity.

In this sense, this interface—or portal, as we call it—was a direct response to the challenge of managing a growing number of sites (stores, warehouses, headquarters, etc.). It is designed to simplify the management of SD-WAN resources like firewall rules and devices.

Ultimately, the portal aims to transform Decathlon's network management from a manual, site-by-site process into a more scalable and automated approach.

What You Will Learn
- What was the initial motivation for creating this portal? And why did we create it?
- How do we monitor the management of the sites?
- How do we prevent users from making unauthorized configuration changes?
- The process for creating new Decathlon sites from an SD-WAN perspective and how local teams can manage their own sites.
Speakers
avatar for Cheikna Dansoko

Cheikna Dansoko

Decathlon
DevOps Engineer in Network UNITED team
avatar for Quentin Lelong

Quentin Lelong

Decathlon
Network Engineer in Edge Network Team
TechLead / PO SD-WAN United solutions
Thursday May 28, 2026 14:00 - 14:30 CEST
3 - LAB 135 Rue Sadi Carnot, Ronchin, France

14:00 CEST

From Bias to Breakthrough: A manager’s journey into neurodiversity
Thursday May 28, 2026 14:00 - 14:30 CEST
Diversity is often discussed in broad strokes, but what does it look like on the ground, in the middle of a noisy open space, when standard communication fails?

In this session, I will share the honest, unfiltered story of my collaboration with Hatem. When Hatem first joined as a contractor, the challenges seemed insurmountable: no eye contact, a total reliance on a job coach to communicate, and the sensory overload of a bustling tech environment. Fast forward two years, and Hatem is not just a permanent employee—he is a pillar of the team and a recognized expert across the organization.

We will walk through the heavy initial investment required to build trust and the specific adjustments—from daily 1-on-1s to "silent rooms"—that turned a difficult start into a technical breakthrough. You will discover how Hatem transitioned from a QA role to a QE (Quality Engineering) expert, mastering automation with the help of a structured mentorship model.

Key Takeaways:

- Beyond Soft Skills: How to adapt management for profiles that don't fit the "standard" social mold.

- The Mentorship Blueprint: Why the "Show once, let fly" approach works wonders for neurodivergent talent.

- Creating the Right Environment: Practical tips on handling sensory challenges (noise, open spaces) in tech offices.

- The ROI of Patience: Why investing time in neurodiversity leads to high-autonomy, high-impact technical experts.
Speakers
avatar for Hatem Souabni

Hatem Souabni

Quality Engineer, Decathlon
Based in Lille, I am a QE Engineer at Decathlon, where I have spent the past four years ensuring the reliability of our digital products. I first spent two years on-site as a consultant via auticon before officially joining the internal team two years ago. Although a career in IT... Read More →
avatar for Jean-Baptiste Leroux

Jean-Baptiste Leroux

Engineering Manager, Decathlon
Engineering Manager @ Decathlon | 17+ Years in Java | Endurance Athlete

Based in Lille for the past 17 years and originally from Western France (near Brittany), I am an Engineering Manager at Decathlon, where I have spent the last 6 years building high-impact logistics solutions. With a deep technical background rooted in 17 years of Java ecosystem expertise... Read More →
Thursday May 28, 2026 14:00 - 14:30 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

14:00 CEST

GITHUB - From Autocomplete to Autopilot: How did AI rewire my life as a developer
Thursday May 28, 2026 14:00 - 14:45 CEST
In 2021, Copilot helped me finish lines of code. By 2024, I was chatting with it. In 2025, Context Engineering was the breakthrough. Now in 2026, I don't just talk to AI — I delegate to it.

Copilot CLI, Skills, agentic workflows, new models — I've gone from asking for help to handing over entire tasks, from scaffolding projects to opening pull requests, all in natural language. And it's not just me: at GitHub, our own product teams are using these same capabilities to ship faster and rethink how software gets built.

The shift goes beyond developers. Product managers, SREs, DevOps engineers — they're all becoming builders. It's no longer about writing code, it's about expressing intent.

In this talk, I'll show you what changed between 2025 and 2026, and how it turned me from a developer with a great assistant into a complete builder.


Note: In this session I will focus on the new features and primitives that have change my life, and GitHub's developers life too. Obviously the CLI, SDK, Agentic Workflows, .. is a big change, but also some features that we are launching in few weeks (I am not allowed to talk about it yet), that is helping, developers but also people in Product Management, Marketing, ... (The presentation will be a mixt of feature introductions, demonstration and stories from our team.
Speakers
Thursday May 28, 2026 14:00 - 14:45 CEST
1 - MAIN STAGE

14:00 CEST

Leading head first with Feature Flags!
Thursday May 28, 2026 14:00 - 14:45 CEST
A brief review of how I’ve used feature flags in the past, from:
  • Trying to contain demand during the early days of Deliveroo, using flags to avoid being overwhelmed with orders: the burger-equivalent of a DDoS attack;
  • Replacing the spaghetti code for an overly complex recommendation engine at RentalCars·com, and safely deprecate thousands of completely unstructured lines of code;
  • Quickly changing a financial risk model at a bank because the CTO (rightfully) thinks people in my team are dangerous key-smashers who shouldn’t be trusted with keyboard; to
  • How flags have helped surf the constant wave of great LLM fundamental models, and the occasional provider outage.
This, interleaved with lessons learned while building different flags systems:
  • Adoption depends on convenience, and making sure adding a flag isn’t seen as an overhead, or looming technical debt.
  • Flags need monitoring: both their state, but also how much they are called, and what happens after in your code.
  • Finally, how automated and agentic coding will change the role of flags in development.

Speakers
avatar for Bertil Hatt

Bertil Hatt

DATADOG
Bertil has been a Data scientist and leading data teams for the last 26 years, and a solution engineer at Eppo (since acquired by Datadog) for the last two.
He’s worked for company as varied as Booking·com, Meta (twice), Farfetch, a few gaming studios, and start-ups where the lessons where epic, but whose names are better left forgotten. He built the original Data stack at Deliveroo and hopes that none it is still used... Read More →
Thursday May 28, 2026 14:00 - 14:45 CEST
🧩 PM/UX ARENA 135 Rue Sadi Carnot, Ronchin, France

14:00 CEST

Hands-On: Domain Driven Design, from theory to practice
Thursday May 28, 2026 14:00 - 15:30 CEST
Is your domain code becoming complex, hard to maintain, and disconnected from real business needs? You keep hearing about **Value Objects**, **Aggregates**, and **Entities** at conferences but struggle to see how to apply them concretely?
This 1.5‑hour hands‑on workshop will demystify **Domain‑Driven Design (DDD)**. Forget abstract diagrams! We will start from a simple, collaborative business exploration (inspired by Event Storming) to let DDD tactical building blocks emerge naturally.
Together, we will incrementally code a small business domain in __Java__. Through **practice**, you will see which concrete problems a Value Object or an Entity solves, how the Aggregate safeguards data consistency.
Whether you are a curious developer or looking to better structure your applications, this workshop will give you the keys to move from theory to practice and start applying DDD in your projects as of tomorrow.
Speakers
avatar for Bastien Terrier

Bastien Terrier

Senior Software Engineer, Decathlon
🇫🇷
Développeur Backend chez Decathlon depuis 7 ans, j'ai consacré 5 années au projet de Location. Cette expérience a été un véritable déclencheur, éveillant mon intérêt pour l'architecture logicielle. Aujourd'hui, j'utilise les approches DDD et EDA, ainsi que des pratiques... Read More →
avatar for François Blarel

François Blarel

Ext - Decathlon
Java developer for 15 years, I design robust business systems by applying Domain-Driven Design principles. Passionate about strategic and tactical modeling, I help teams align ubiquitous language, invariants, and architecture. Advocate of expressive, testable, domain‑driven cod... Read More →
avatar for Thomas Smagghe

Thomas Smagghe

Lead Developer, Ext - ADEO Services

Thursday May 28, 2026 14:00 - 15:30 CEST
🏀 PRACTICE ZONE #1 135 Rue Sadi Carnot, Ronchin, France

14:45 CEST

AIOps & Agentic AI: How to Diagnose Your Product's Blind Spots in 10 Minutes
Thursday May 28, 2026 14:45 - 15:15 CEST
In a modern "RUN" environment, the challenge isn't a lack of data, but the time required to make sense of it. Manually auditing an incident to understand why an alert didn't fire—or identifying recurring patterns across hundreds of tickets—is a tedious process that often takes hours of manual "investigative" work.

At LMFR, we’ve automated these critical tasks using Agentic AI and the Model Context Protocol (MCP). By connecting AI agents directly to our monitoring and ticketing stack (ServiceNow, PagerDuty, Datadog), we have transformed post-incident analysis into a 10-minute automated process.

In this 30-minute demo-driven session, we will deep-dive into two major use cases:

- The Automated Observability Audit: We will demonstrate how an AI agent analyzes a past incident to answer three crucial questions: What was missing to prevent this? What could have detected it faster? How can we strengthen our alerting? The agent cross-references logs and traces to identify the "invisible" gaps in your monitoring strategy, ensuring the same incident doesn't catch you off guard twice.

- Smart Incidentology & Trend Analysis: Moving beyond individual tickets, we’ll show how AI can analyze the entire history of a product to uncover structural flaws. By identifying the most frequent defects and recurring pain points, the agent helps Ops teams move from "Firefighting" to true Problem Management, providing a data-backed list of priorities for the product backlog.
Speakers
avatar for Peter Fontaine

Peter Fontaine

Ext - Leroy Merlin France
Originally a Developer, I transitioned into the world of DevOps and SRE four years ago to bridge the gap between building code and maintaining production. As an AI enthusiast and observability advocate, I am passionate about making the "invisible" visible. My current mission at LMFR... Read More →
avatar for Amaury Pruvot

Amaury Pruvot

Product Manager, Leroy Merlin France

Thursday May 28, 2026 14:45 - 15:15 CEST
3 - LAB 135 Rue Sadi Carnot, Ronchin, France

14:45 CEST

Women in software engineering: what gives?
Thursday May 28, 2026 14:45 - 15:15 CEST
With the advent of the age of AI software has never played such an outsized role in our daily lives and yet women only account for a small minority of software engineers. This is especially disheartening given that many - but not all - of the first software engineers were women (Ada Lovelace, Katherine Johnson, Margaret Hamilton, Grace Hopper, ...).

This talk aims to stay away from dogma or political posturing, instead focusing on explaining why more women aren't software engineers and proposing concrete, tactical and doable solutions.

The first part of the talk recounts the stories of some of the pioneers who built flight control systems for the Apollo mission, lamenting that their stories aren't more widely known.

I then use those examples to contrast with the current state in our Industry where female developers only account for a minority of software engineers.

I'll then give an overview of why I believe more women don't become software engineers, briefly explaining why this is the case.

I'll also share why some of the women who become software engineers eventually leave our Industry and what we can do to retain them.

Finally, I'll conclude with concrete actions we can all take in order to increase the amount of women in software engineering.

This is a tentative/more detailed outline of the talk:

Introduction: the pioneers.
Ask attendees to look around them, notice how little women are in the room.

This wasn't always the case and we have many examples of women who've made massive contributions to software engineering: from Ada Lovelace to Grace Hopper.

How we got here.
The first part of the talk uses a data driven approach to describing the problem at hand, focusing on how many women are developers.

Why we got here: women in STEM
After underlining the fact that education is key and that only a small amount of women pursue an education in STEM I'll briefly explain why that is.

Adding insult to injury: female software engineers in the workplace
I'll then continue on by explaining that even when they are software engineers a lot of women end up leaving our Industry despite haven chosen a career path in software engineering.

What can be done about it?
Finally, I'll focus on the possible solutions we as individuals can implement in order to increase the amount of women who become software engineers and make our teams more diverse. I'll focus on the power of mentorship, the importance of retaining the female software engineers on your team by fostering a culture of respect, empathy and excellence.

AI and software are transforming our lives and shaping how we view, interact with and perceive the world; and yet software engineering teams are way too often stacked with men. This talk isn't about political posturing or gimmicks, it's about explaining how we got here, providing data on what the current state of affairs is, why this problem matters (importance of building diverse teams) and what can be done to solve it. The solutions proposed don't include quotas or political dogma but instead focus on concrete solutions like building role models, fostering mentorship and encouraging girls to pursue STEM education.
Speakers
avatar for Emma Gaubert

Emma Gaubert

Decathlon
My name is Emma GAUBERT and I'm 28 years old.

I started my career off in Marketing before growing bored of my job and quitting to pursue my dream: to become a Software Engineer. I then spent 9 months learning how to code at a bootcamp before doing a year long apprenticeship at a c... Read More →
Thursday May 28, 2026 14:45 - 15:15 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

15:15 CEST

Being a developer in 2026: From "Vibe Coding" to engineering mastery
Thursday May 28, 2026 15:15 - 16:45 CEST
The "Chat" era is dead. In 2026, the real work happens in the Terminal. Stop the disposable apps and the AI-induced FOMO; it's time to reclaim your craft.

In a world of infinite code generation, Architecture and Maintainability are the only things that separate a resilient product from an unmaintainable liability. We have reached a point where generating code is easy, but controlling it is the true engineering challenge.

Join this 90-minute hands-on lab to cut the noise, kill the "vibe coding," and master the complexity of production-ready software. Step out of the chatbox and learn how to orchestrate true Agentic Workflows.


# Lab Details: 90 Minutes to Deep Dive into 2026 Engineering

This is not a session about writing better prompts; it’s a session about upgrading your entire operating model as a developer. We will build, debug, and secure a complex application by mastering four pillars:

**1\. The Command Center (CLI First)**

Transform your CLI into an autonomous powerhouse. We will move away from passive IDE sidebars and demonstrate how to trigger agents directly from the terminal to execute complex refactoring, run diagnostics, and manage infrastructure in real-time.

**2\. Skills over Chat (Context Engineering)**

Stop prompting, start building. You will learn how to give your environment "Capabilities" (Skills and Context) to automate the grind. By injecting architectural rules and domain constraints directly into the workspace, you allow the agents to focus on your *intent* rather than forcing you to babysit their output.

**3\. The Shadow Team (Agentic Orchestration)**

You are no longer just a coder; you are the Lead Engineer of a digital squad. You will orchestrate specialized AI personas—a Security Auditor, a QA Automator, and an Architecture Reviewer—that act autonomously to challenge your plans, generate E2E tests, and secure your Pull Requests.

**4\. Engineering vs. Tokens (Sustainable Craftsmanship)**

AI can generate a million tokens per minute, but who maintains them? We will focus on the ultimate 2026 skill: System Design. You will learn how to enforce boundaries and review Agent Plans *before* they touch the codebase, ensuring that AI speed never compromises software excellence.


# Participant Prerequisites

* Professional software engineering experience (any modern stack).
* A laptop with a modern IDE and terminal access.
* The mindset of a Tech Lead willing to stop coding everything manually and start orchestrating.
Speakers
avatar for Bertrand Gressier

Bertrand Gressier

Staff Engineer, ADEO Services
For the past 25 years, I have been building software and navigating the incredible shifts in our digital landscape.From my early days developing on mainframes and the birth of the Web, all the way to today's Agentic Web revolution, I have always been driven by the evolution of technology.Currently... Read More →
avatar for Thomas Rumas

Thomas Rumas

Dev Advocate, ADEO Services
Grazia Colucci - Head of UX in Leroy Merlin Italy
Thursday May 28, 2026 15:15 - 16:45 CEST
⚽️ PRACTICE ZONE #2 135 Rue Sadi Carnot, Ronchin, France

15:30 CEST

Beyond Intuition: AI-Assisted Metrics From Jira and GitHub to Diagnose Team Health
Thursday May 28, 2026 15:30 - 16:00 CEST
Management decisions about engineering teams too often rely on incomplete signals — sprint velocity, subjective updates, and what surfaces in status meetings. But the data to make better decisions already exists: in your Jira and GitHub, waiting to be connected.

We used AI-assisted analysis to extract flow metrics from Jira and DORA indicators from GitHub — and what emerged was a picture no one had seen before. Trends in change failure rate, rework patterns, and team load revealed systemic issues that weren't showing up in any dashboard or review meeting. The data didn't just confirm suspicions — it reframed the conversation entirely.

What followed was a structured change process: workshops grounded in evidence, renegotiated team agreements (Definition of Ready), and a shift in engineering practices — driven not by management mandate, but by shared understanding of what the numbers were saying.

This talk is for managers who lead engineering teams and want to move from intuition to insight.
You'll learn:

- How to surface flow metrics from Jira and DORA indicators from GitHub
- What patterns signal team stress, quality erosion, and instability — before they become crises
- How AI lowers the barrier to analysis: no special skills required
- How to use metrics to drive change conversations — not performance evaluations

The experiment is still in progress. We'll share early signals, honest lessons, and what we'd do differently.
Speakers
avatar for Artur Kasprowicz

Artur Kasprowicz

Engineering Manager, Leroy Merlin Poland
ARTUR KASPROWICZ
Engineering Manager at LMPL

Manager with over 15 years of experience in software engineering and technical leadership. Former CTO of a software house delivering enterprise solutions for Retail, E-commerce, and Fintech clients. His background spans Java development, system architecture, and enterprise integrations, comb... Read More →
avatar for Andrzej Krawczyk

Andrzej Krawczyk

Scrum master, Leroy Merlin Poland
ANDRZEJ KRAWCZYK
Scrum master at LMPL

Experienced Scrum Master with 15 years in IT. His question has always been the same: how do we know if what we're doing is actually working?
He has a stubborn belief that improvements should be visible in data — not just felt in retrospect... Read More →
avatar for Michał Grzybowski

Michał Grzybowski

Director of IT Architecture & Engineering, Leroy Merlin Poland
Technology leader focused on people, delivery leadership, engineering and innovation culture, and value creation. Over 15 years of experience in building digital products, scaling engineering organizations, and driving enterprise and software architecture, as well as leading digital... Read More →
Thursday May 28, 2026 15:30 - 16:00 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France

15:30 CEST

From Chaos to Control: Mastering High-Impact Incidents at ADEO and DECATHLON
Thursday May 28, 2026 15:30 - 16:00 CEST
When a critical incident strikes a complex system, every second counts.

The initial moments—the "time to engage"—are often lost trying to identify and gather the right experts. This delay can impact our customers and our business.
Who to call? How long does it take to get the right experts in the same room? Should we communicate among our Business Units ?

At ADEO, we have evolved our incident management process. Over the past year, we have implemented a "War Room" system for Priority 1 incidents on Google Chat.

With a single trigger, this tool automatically:
- Identifies and mobilizes the correct product and operations teams.
- Creates a dedicated Google Chat space and Google Meet for immediate collaboration.
- Provides incident managers with the tools they need to lead effectively and accurately.

In a 30-minute session, we can present this innovative tool, its key features, and the significant impact it had on reducing our time to engage and improving transparency.
Speakers
avatar for Yoana BOYADZHIEVA

Yoana BOYADZHIEVA

Support Engineer - eCommerce Production Leader, Decathlon
avatar for Manuel Tagliani

Manuel Tagliani

Ext - ADEO Services
With a career started in a L3 maintenance/support team,
I have built a diverse skill set like Operations, DevOps, Product Owner and was part of Head of Ops team at ADEO.
My passion for automation led me to develop THOR (To Help Our Runners), a innersource tool that help runners/ops... Read More →
Thursday May 28, 2026 15:30 - 16:00 CEST
3 - LAB 135 Rue Sadi Carnot, Ronchin, France

16:00 CEST

Is English the new hottest programming language? Introducing Spec-Driven-Development with AI
Thursday May 28, 2026 16:00 - 16:45 CEST
Ever since vibe-coding hit the scene, you might think knowing how to code is old news for building apps thanks to AI. But let's be real, some of us who dove in got burned: hallucinations, performance and security issues, messy code, and the final product not quite matching the initial idea.

What if there was a way to **get the best of both worlds**? To boost efficiency leveraging AI while being 100% confident when pushing to production?

We chose **Spec-Driven Development** using **SpecKit** to build an application we deployed with total confidence, using **English** (and some French\!) as our main "programming" language\!

In this talk, Christine (Product Manager) and Julien (Staff Software Engineer) will reveal:

* **The "state of the art"** in this space and where the industry stands today.
* **What is Spec-Driven-Development**, in a nutshell
* How AI helped us build the *right* software by supporting **both the PM and the developer**.
* **Ensuring code quality** while dodging nasty surprises.
* **Real-world struggles** and the pitfalls you’ll want to watch out for.
* **Where we go from here** \- the areas we're still refining and what we've yet to solve.

Join us to learn how to move beyond the hype and embrace a development process that we found smart, effective, and production-ready\!
Speakers
avatar for Julien Jakubowski

Julien Jakubowski

Staff Software Engineer, Decathlon
Julien Jakubowski is a Staff Software Engineer at Decathlon, focusing on logistics systems. He also leads the company’s Streaming & API Management SIG. With over 20 years of experience, he has built complex, distributed, scalable, and event-driven architectures.

Julien is a regular speaker on software engineering topics, delivering talks at events such as Devoxx, JavaZone, BigData Europe, JCon and various Java User Groups. He is a co-founder and one of the leaders of the Ch'ti JUG (Java User Group of Lille... Read More →
Thursday May 28, 2026 16:00 - 16:45 CEST
2 - GRAND PAVILION

16:15 CEST

AI-Assisted Codebase Migration: Changing Legacy Stack to a Modern One
Thursday May 28, 2026 16:15 - 16:45 CEST
Legacy codebases often sit in valuable but neglected state because migrations are costly, risky, and domain-knowledge intensive.

Large language models help change that. By analyzing code, tests, and docs, LLMs can produce helpful code changes and findings in seemingly forgotten parts of our legacy code. As a force multiplier, LLMs can help accelerate migrations to modern stacks and reduce the cognitive overhead, letting small engineering teams execute bigger migrations with larger confidence.

In this talk we'll go through:
- LMPL's experiences with migrating legacy PHP code to modern Java stack
- efficiency gain within a small and focused migration team
- how to counteract the traps and issues with LLM-driven code migrations of large codebases
Speakers
avatar for Jedrzej Andrykowski

Jedrzej Andrykowski

Senior DevOps Engineer, Leroy Merlin Poland
Mainly related to Java environment. Fan of DevOps culture and broadly understood automation of everything. Enthusiast of Domain-Driven Design. From time to time appears as a speaker. In free time guitarist and a extreme music lover.
avatar for Pawel Kowalski

Pawel Kowalski

Developer, Leroy Merlin Poland
Senior Software Engineer at LMPL
Experienced in Java and PHP, with a strong background in back-end development and a solid understanding of front-end technologies. Occasionally takes on DevOps-related tasks, enjoying the challenges they present. Outside of work, is passionate about cycling and often spends free time... Read More →
Thursday May 28, 2026 16:15 - 16:45 CEST
3 - LAB 135 Rue Sadi Carnot, Ronchin, France

16:15 CEST

The Hidden Cost of Intelligence: From Cloud Transparency to Sustainable AI
Thursday May 28, 2026 16:15 - 16:45 CEST
Artificial Intelligence is often seen as a virtual, weightless force. Yet, its environmental footprint—from GPU intensive training to daily inference—is very much physical. As Decathlon and Adeo accelerate their AI integration, a crucial question arises: Can our innovation be truly "forward-thinking" if it isn't sustainable?

In this session, I will take you behind the scenes of a 2025 Proof of Concept that bridges the gap between raw compute power and ecological responsibility. We will explore how leveraging cloud environmental telemetry allowed us to establish the first reliable & actionable metrics for AI environmental impacts.

Key takeaways from this talk:
- The Foundation: How cloud-native monitoring tools serve as the "entry point" for measuring AI impact.
- The 2025 POC: Real-world feedback on integrating environmental metrics into the AI lifecycle.
- Actionable Strategies: Moving from "Carbon Awareness" to "Concrete Environmental impact limitation" without sacrificing model performance.
Let’s stop treats AI as a black box and start building an architecture that respects both our business goals and our planet.
Call to Action & Synergies Decathlon + Adeo
Speakers
avatar for Nathalie Otte

Nathalie Otte

Decathlon
Hello, I'm Nathalie, and my mission is to make Sustainable IT a driving force behind our 'Planet & Environment' commitment. After 20 years managing complex industrial systems 24/7, I've come to understand that innovation is only meaningful if it's responsible. My background, shaped... Read More →
avatar for Damien Dillies

Damien Dillies

Decathlon
Hello!

After 12 years in the digital sector of retail industries as a Project Manager and Product Owner, I am now a FinOps.

Passionate about both greenbacks and green leaves, my motivation is to support my teammates on these two topics !
Thursday May 28, 2026 16:15 - 16:45 CEST
👾 DEV/TECH ARENA 135 Rue Sadi Carnot, Ronchin, France
 
Share Modal

Share this link via

Or copy link

Filter sessions
Apply filters to sessions.