Backend Developer Jobs in Nouvelle-Aquitaine, France

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.

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.

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.

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.

HolidayPirates Group is a travel deals company seeking a Backend Engineer to design, build, and maintain core backend services and scalable APIs using Clojure. You will collaborate with product and engineering teams, contribute to system performance and reliability, and participate in technical decisions with real ownership.

Gramian Consultancy is hiring a Senior Java Backend Engineer for a client supporting the development of advanced AI systems by incorporating high-quality software engineering expertise into training and evaluation workflows. The role involves building and reviewing production-grade backend systems, improving reliability and performance, and contributing technically rigorous software outputs that help train next-generation AI systems.

Join the Cloud Monetization Platform team to build commercial infrastructure for a modern AI cloud platform. You will design scalable backend services and distributed workflows that handle complex usage metrics, billing, and payments.

Staff Software Engineer, Backend at a partner company building developer infrastructure that powers integrations between applications and the real world. Based in France, this remote-first role owns critical backend systems, APIs, and services from concept through production while collaborating with developer customers and a distributed engineering team.

Backend Engineering team at Nica Recruiting builds and maintains high‑performance services for acquisition platforms. The role designs, implements, and optimizes server‑side APIs and data pipelines, collaborating with product and front‑end engineers to ensure reliability and scalability.

Principal, Software Backend Engineering at Forterro, a European ERP software publisher, leads the design and evolution of core backend services for MyForterro. The role focuses on building secure, scalable APIs in C#/.NET, shaping identity and authorization systems (OAuth 2.0, OpenID Connect, SSO), and advancing AI-enabled backend services across the group.

Soda is building the first Data & AI performance monitoring platform to help Fortune 500 companies solve data quality bottlenecks. As a Senior Backend + Infrastructure Engineer on the Platform team, you will design and build robust Java services and manage AWS/Kubernetes infrastructure for their multi-tenant SaaS product.

Our partner company seeks a Backend AI Software Engineer to design scalable backend systems powering innovative digital health products. You will develop APIs and data pipelines using TypeScript and Node.js, collaborating with cross-functional teams in a remote-first environment based in France.

Founding AI Platform Engineer (MLOps / Backend) for a partner company based in France, focused on shaping the systems that turn ML and GenAI capabilities into reliable, production-ready products. You will operate at the intersection of backend engineering, cloud infrastructure, MLOps, platform reliability, and product delivery, building production infrastructure that enables AI systems to scale safely while remaining performant, maintainable, secure, and cost-efficient.

Banking Experience team at Swan builds embedded banking APIs and backend services for SaaS platforms. The role designs, implements, and optimizes high‑performance TypeScript/Node.js services, ensures compliance and scalability, and collaborates with product owners on API design.

Join the Space Processing & Intelligence business unit at CS, a Sopra Steria subsidiary, to develop backend systems for critical spatial missions. You will analyze requirements, design technical solutions, and implement Java-based microservices within an Agile team in Toulouse.

Our partner seeks a Tech Lead / Solution Architect to design the backend foundation of a new Legal OS MVP in France. This senior role combines hands-on engineering with solution architecture, focusing on resilient workflows, secure SSO, and comprehensive observability.

Gramian Consultancy is hiring a Senior Backend / Platform Engineer for a Big4 Consultancy group working with leading financial institutions on AI-driven transformation, automation, advanced analytics, and financial crime prevention. The role builds scalable backend services and core platform components supporting production AI applications, focusing on microservices, APIs, cloud integration, authentication, performance optimization, and secure platform engineering across AWS and Azure.

The Data Layer team is hiring a Backend Software Engineer to build and evolve the storage and query infrastructure behind a large-scale process orchestration platform. Day-to-day work spans relational databases and Elasticsearch/OpenSearch, focusing on data reliability, performance, streaming, retention, and scalability while supporting process monitoring and emerging AI-driven automation.

Backend Engineer role based in France focused on building robust backend systems and integrations that connect critical business platforms and services. You will work across APIs, connectors, background jobs, messaging, email delivery, persistence, and quality assurance, designing resilient integrations that handle rate limits, webhooks, timeouts, and retries.

GameTech team at Xsolla builds monetization and backend services for games. The Tech Lead owns architecture and integration strategy for connecting external gaming service providers, guiding a team to design scalable APIs, microservices, and secure data flows.