Software Engineer Java/Kafka — Price Hub

About the company

The Price Hub team is recruiting in Nantes: join us as a Software Engineer Java/Kafka!

Our 2 critical products run 24/7, with an SLA greater than 99.9%. Around them, 4 other products exploit sales data and offer commercial dynamism levers to stores.

DECATHLON DIGITAL Imagine if technology allowed us to push boundaries and offer unprecedented sporting experiences. That is precisely our ambition at Decathlon Digital! We are a team of more than 5,000 experts in software engineering, product management, data, cloud, and cybersecurity, spread across Paris, Lille, and Amsterdam. Together, we are creating the largest digital sports platform, leveraging technological innovations to optimize the value chain, design connected experiences, and give a second life to our products.

Let's change the game for good. Our passion for sport guides us and we want it to endure. That is why we are committed to building a more sustainable technological model, by reducing our direct impact on the environment, and by creating a safe and inclusive space to learn and thrive together. Join the team and shape the future of sport.

Your tasks

7 million Kafka events per day, peaks at several tens of millions, with a clear objective: zero loss. Will you help us maintain this course?

Every day, in more than 2,000 stores and more than 70 countries, millions of prices change. One error means a poorly served customer, a store in difficulty, and lost trust. Our role: to identify and transmit the right price, at the right time, without error, everywhere in the world.

You will join an event-driven platform that evolves continuously to meet challenges of performance, resilience, and quality. Within the team, you will contribute concretely to this ambition by developing and evolving our products.

• You design, develop, and maintain backend features in Java or Kotlin, in connection with product needs.
• You participate in the design of robust solutions for our distributed systems and our Kafka flows.
• You contribute to code quality through testing, code reviews, and sharing best practices.
• You take part in the team's technical decisions and document important choices.
• You participate in the continuous improvement of the performance, observability, and resilience of our services.
• You contribute to the operation of our products in production: investigation, monitoring alerts, and incident resolution, with the support of the team.
• You work in close collaboration with Software Engineers, the Product Manager, the Engineering Manager, the QE, and the Support Engineer.

Requirements

TECHNICAL STACK

• Java, Kotlin
• Kafka, event-driven architecture, microservices, REST APIs
• PostgreSQL, Valkey (cache)
• Docker, Kubernetes
• GitHub Actions (CI), Flux (GitOps / CD)
• Datadog (monitoring and alerting)
• Bonus: React

WHAT YOU BRING

• Significant experience in backend development, with solid practice in Java or Kotlin.
• Initial experience with Kafka, or a strong desire to progress in streaming and distributed systems.
• A concern for producing readable, tested, and maintainable code.
• A sensitivity to the challenges of performance, availability, and reliability in production.
• Initial familiarity with Docker, Kubernetes, CI/CD, or observability.
• The desire to learn, share your ideas, and contribute to the team's technical decisions.
• Professional English (B2) to collaborate with teams worldwide.

What we offer

• A concrete and visible impact: your work matters in Decathlon stores worldwide.
• A culture of performance and autonomy inspired by Accelerate: Kanban, continuous delivery, and continuous improvement of our products. More than 20 production deliveries per week, with an average cycle time of less than 4 days over the year.
• GitHub Copilot with the latest AI models, and Gemini, in your daily dev life.
• A hybrid and flexible way of working, with offices in Nantes.
• Choice of hardware (Mac, Windows, or Chromebook).
• Technical certifications from the first year, external conferences (DevFest...), large internal tech conferences, dedicated time for monitoring trends, and possible international mobility.
• Attractive compensation, with monthly and quarterly bonuses and employee shareholding.

How to apply

Don't tick all the boxes? Apply anyway, let's discuss it.