Backend Developer Jobs in Île-de-France, 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.

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.

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.

Backend Engineering team at Trade Republic builds scalable backend services for Europe’s largest savings platform. The role designs high‑availability cloud services on AWS, develops Kotlin‑based microservices with Spring and Vert.x, and implements CI/CD pipelines using GitHub Actions and Kubernetes.

Norbert Health is building autonomous robots that deliver healthcare services. The Senior Backend Engineer will own the core backend that connects robots, embedded devices, Android apps, EMR systems, and a user portal.

Helsing seeks a backend engineer to build robust AI‑driven systems for defence applications across Europe. The role involves designing distributed, embedded, and networking solutions that operate under strict constraints, ensuring reliability in high‑risk environments.

Confirmed Backend Engineer on the Carpool Supply team at BlaBlaCar, building the core backend engine that powers millions of long‑distance carpool trips across 22 countries. The role designs, implements, and maintains microservices for driver inventory, booking lifecycle, and geo‑spatial search, collaborating closely with product and demand squads to deliver business impact.

Senior Backend Engineer (Python/Django) for a partner company building a global connectivity platform used by millions of travelers worldwide. You will build and scale high-performance APIs and mission-critical microservices, contribute to software architecture around operations, automation, and scalability, and strengthen engineering quality through testing, code reviews, and documentation.

Iad, a leading European real‑estate network, seeks a backend engineer to join its Business Factory team in Paris. The role focuses on building and evolving web‑based products for its Playiad platform, using PHP/Symfony and a clean architecture approach.

This Senior ML Backend Engineer role is based in France and is fully remote, supporting a partner company that builds machine learning infrastructure for advanced property intelligence solutions. Day-to-day, you will design and evolve scalable ML platforms for training, evaluation, deployment, and monitoring, while partnering with ML engineers, researchers, and software teams to move models from experimentation into production.

Gaming Backend Platform team at Voodoo builds scalable services for mobile games used by millions. The role designs, implements, and integrates high‑scale Golang APIs, collaborates with client developers and game designers, and drives new tech initiatives.

Join Prelude as a Backend Engineer to build and scale a distributed authentication platform. You’ll work on the Dashboard and API, designing AWS-based services in Go, improving performance, and deploying fraud prevention models.