BACKEND JAVA / API DEVELOPER

Project overview

🚀 MISSION — BACKEND JAVA / API DEVELOPER

For a major player in French sports, we are looking for a Backend Java Developer to join a team dedicated to the opening and industrialization of the IS APIs.

📍 Boulogne-Billancourt

🏠 Up to 2 days of remote work / week

📅 Start: November

💼 Experience – 5 years of experience (Permanent contract, Freelance, Portage)

🎯 The mission

You will join a Value Stream dedicated to APIs, with a strong focus on inter-application integration and opening the IS to partner publishers.

Responsibilities

🛠️ Technical environment

Java 8 to 25 – Spring Boot – Spring Data JPA – REST API – OpenAPI – OAuth2/OIDC – PostgreSQL – AWS – Git – Jenkins/CI-CD – JUnit – Postman – Cypress/Selenium – SonarQube

Experience with Terraform, contract testing, API mocks, or payment solution integration will be appreciated.

👤 Profile sought

• Design, develop, and maintain Java APIs and applications
• Work on Java / Spring Boot / Spring Data JPA
• Design and document REST APIs exposed to external partners
• Manage API authentication, security, versioning, and lifecycle issues
• Integrate third-party APIs, with error handling, retries, webhooks, and asynchronous processing
• Participate in the development and operation of applications in an AWS environment
• Strengthen test automation: unit, integration, end-to-end, and contract tests
• Participate in code reviews and continuous quality improvement
• Contribute to application run, monitoring, and incident resolution
• Work in close collaboration with the Tech Lead, Product Manager, QA, and other developers
• Master's degree / Engineering school or equivalent
• 5 years of experience in Java development
• Solid experience with Spring Boot and REST APIs
• Concrete experience with system integration issues
• Good understanding of reliability, security, and data consistency issues
• Sensitivity to best practices: Clean Code, SOLID, automated tests, code review
• Autonomy, rigor, team spirit, and ability to communicate with external technical stakeholders

Project details

• Start: ASAP
• Duration: 46 mois
• Location: 92100 BOULOGNE-BILLANCOURT, FR
• Languages: French