Software Engineer Java/Kafka — Price Hub

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

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

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

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

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

YOUR FUTURE CONTRIBUTION

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

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 commitment to producing readable, tested, and maintainable code.
• An awareness of production performance, availability, and reliability challenges.
• 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 YOU

• 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. Over 20 production releases 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 development work.
• A hybrid and flexible work mode, with offices in Nantes.
• Choice of equipment (Mac, Windows, or Chromebook).
• Technical certifications from the first year, external conferences (DevFest…), and major internal tech conferences, dedicated time for research, and possible international mobility.
• Attractive compensation, with monthly and quarterly bonuses and employee share ownership.

You don't tick all the boxes? Apply anyway, we'll discuss it.