Développeur Senior Java – Montpellier – H/F
Core
Senior Backend Developer building payment and logistics platforms for 17 million Free Mobile subscribers.
Role type
Senior IC Java Backend Engineer
Builds
Robust REST/SOAP APIs for payment transactions (3D Secure, SEPA) and logistics flows (order management, shipping, returns)
Domain
Telecom / Fintech
Deliverable
production ML models | product features
Required skills
Java 8-25, Spring Boot, REST/SOAP API design, MySQL, Hibernate/JPA, distributed systems, performance optimization, observability, unit/integration/E2E testing
Preferred skills
Experience on long-term stable projects (2+ years), autonomy, technical curiosity
Technologies
Java, Spring Boot, JBoss, MySQL, Hibernate, REST, SOAP
Responsibilities
Develop payment and logistics features, design and implement robust APIs, optimize performance and ensure 24/7 high availability, manage production incidents, write production-quality code, collaborate with business teams
Seniority
Senior, hands-on IC
