Backend Developer Jobs in France

Avnet, Inc., a Fortune 500 global leader in electronic component distribution, is hiring a Backend Developer to design and build scalable, high-performance services that support the company's digital transformation. Day-to-day work includes developing backend services with Python and FastAPI, building RESTful APIs, working with MongoDB, optimizing big data pipelines with Apache Spark on private cloud clusters, and collaborating with cross-functional teams.

Senior Backend Developer at Odaseva, a scale‑up securing Salesforce data for Fortune 500s. Builds and optimizes high‑performance backend engines in PHP, Go, NodeJS and Python, collaborating with Product Managers and Infrastructure to deliver scalable, secure solutions.

Backend Engineering team at Nica Recruiting builds and maintains high‑performance services for catalog integration. The Senior Backend Developer designs, implements, and optimizes APIs and data pipelines, collaborating with product and infrastructure teams.

Software engineer for Brandsplace team at Veepee. Develop and redesign product features, propose interfaces, maintain clean code, review designs, ensure reliability and scalability, meet deadlines, review legacy code, write docs, conduct technical interviews.

Navigation team at Veepee builds the storefront experience for flash‑sale e‑commerce. The Backend Developer designs and implements APIs, background workers, and event‑driven services that power the site and mobile apps.

ASGS team at Worldgrid builds the Advanced Smart Grid Suite for managing smart meter data. The Backend Developer designs and implements API microservices, optimizes databases and ensures code quality within an Agile environment.

Join the Space Processing & Intelligence team within CS Group’s Espace Business Unit to advance European space mission performance and security. You will study ground segment image solution convergence, define microservice architectures using Java Spring, and maintain evolving solutions.

Stancer technical team builds and maintains the client portal for payment solutions. The Senior Python Backend Developer will maintain and evolve the client space, support complex internal solution development, and contribute to architectural decisions while staying abreast of technology trends.

Modern Application Development practice at VISEO builds cloud‑native data platforms. The Backend Developer designs scalable data models, implements Java/Spring Boot services, and creates robust APIs (REST, GraphQL, Kafka) while ensuring security and performance.

FinTech Platform Engineering team at Horizon Trading Solutions builds a high‑performance trading platform for electronic markets. The Backend Java Developer Intern will write clean, maintainable Java code, collaborate on new features, and participate in code reviews and agile processes within a Scrum team of 6‑9.

Software team of the Mine Countermeasure department at Thales Defense, Brest. Develops and maintains backend components for data processing in maritime surveillance software, writing code in Java, Python and C++.

CS, a subsidiary of Sopra Steria, seeks a Backend Developer for its Space Operations & Systems team in Toulouse to support satellite ground segments and space surveillance. The role involves backend development using Java and Spring Boot, technical design, testing, and documentation within a microservices architecture.

R&D team at a leading electric vehicle charging infrastructure provider builds a multi‑brand backend platform for IoT supervision, payments and operator interoperability. The Java Backend Developer will design, develop and maintain OCPP and CPI services, ensure code quality with TDD and code reviews, and collaborate with an 8‑10 person product‑project hybrid team.

HELPLINE Engineering builds and maintains critical backend services for enterprise clients, leveraging Java and modern cloud technologies. The Senior Backend Java Developer designs technical solutions, writes clean code, creates unit tests, and collaborates with agile teams to ensure high‑quality, reliable, and sustainable applications.

Squad Aggrégation at Nexton, driving digital transformation for a major client. Builds robust, high‑performance Java 21/25 REST APIs with Spring Boot 3, integrates Elasticsearch and Kafka for data search and event processing.

Tech team at Antadis, a French digital agency specializing in e‑commerce platforms. The Senior Backend Developer designs and builds custom PHP/Symfony/Sylius features, optimizes performance, and ensures clean‑code standards while mentoring junior developers.

Draft Showdown team at Voodoo builds a turn‑based multiplayer game and needs a backend engineer to shift game logic from client to server. The role designs and implements server‑side validation, matchmaking, cheat detection and APIs while collaborating with client engineers and designers.

Join Prelude as a Backend Engineer to build and scale distributed systems on AWS using Go, develop full-stack applications with Next.js and gRPC, and enhance our API for secure OTP delivery. Work closely with product, design, and customers to deliver reliable, high-performance services.

Nabla’s AI‑driven healthcare platform needs a Backend Engineer to design, build, and evolve server‑side applications and APIs that power real‑time clinical workflows. The role focuses on scaling backend systems, integrating with EHRs, and shaping technical strategy for high‑availability services.