Software Developer Jobs in Brittany, France

Software Engineer – Hardware Development at Scaleway. Join a team of 6 in Paris, Lille, Toulouse, Rennes, Rouen, Bordeaux, Lyon.

Software Service of the Centre of Competence for Reconnaissance and Mission Systems at Thales develops control‑command software for electronic warfare and maritime surveillance. The Software Developer collaborates with system engineers and architects to specify, design, implement, test and maintain Java‑based applications, applying CI/CD, Agile and cybersecurity standards.

Rejoindre l'équipe en charge de la conception, de l'évolution et de l'exploitation de l'offre Kubernetes managé au sein de la Product Unit Public Cloud. Développer et maintenir des services cloud-native à fort trafic, reposant sur des architectures distribuées en microservices déployées sur Kubernetes.

IHM team at Thales Brest develops sonar operator graphical interfaces for maritime patrol aircraft. The Software Engineer, Web Development, Angular will design, develop and test Angular-based UI features, integrate REST/GraphQL services, and support integration teams while participating in agile ceremonies.

Smart and Critical Systems (SCS) team at Thales builds secure software solutions for defense and critical infrastructure. The role develops and maintains Java applications, automates CI/CD pipelines, and drives continuous DevOps improvements while collaborating with cross‑functional development teams.

Smart and Critical Systems (SCS) at Thales develops secure software and system integration solutions for defense, aerospace and digital domains. The Software Development Engineer will design, code and maintain Java applications, automate CI/CD pipelines, and collaborate with dev teams to enhance DevOps practices.

Collins Aerospace, a Raytheon Technologies company, leads advanced aerospace and defence technologies. As a Software Engineer you will contribute across the full software development lifecycle, designing embedded software architectures, creating test specifications, developing C/C++ code, and verifying solutions for navigation systems.

Ippon Technologies, a French consulting firm, seeks a Software Engineer to join its Nantes agency. The role blends agile development across front‑end and back‑end stacks—Java/Spring, Node.js, Python, Angular, Vue, React—while contributing to CI/CD pipelines, TDD/BDD practices, and architectural decisions.

Engineering – Back-End at SFEIR Rennes builds modern full‑stack applications and cloud‑native services. The role designs and implements Java 21/Spring Boot back‑ends, creates rich Angular or React front‑ends, and contributes to API design, micro‑service architecture, and generative AI tooling.

Software Engineer on Scaleway’s Non-Relational Database team, building and scaling Redis and MongoDB products for sovereign cloud regions. Day‑to‑day work includes Kubernetes cluster management, Helm/ArgoCD deployments, GoLang coding, Terraform IaC, and performance tuning.

SFEIR seeks a Java Software Engineer to join its Nantes team, blending on‑site collaboration with flexible remote work. The role focuses on building robust web and mobile applications, designing future‑proof cloud and data architectures, and driving AI innovation through tools like RAISE.

Compute Marketplace team at Scaleway builds a robust ecosystem of OS images and packaged applications for users and publishers. The Software Engineer designs and develops new marketplace features, maintains APIs, automates OS image creation with Packer, manages artifacts, ensures security via CI/CD and scanning, and collaborates with Product Management and Core Engineering across Paris, Lille, Toulouse, Rennes, Rouen, Bordeaux, and Lyon in a hybrid model.

Datadog is a leading SaaS platform that empowers engineers to monitor, troubleshoot, and secure their systems at scale. As a Senior Software Engineer, you will tackle high‑volume challenges, design scalable solutions, and collaborate across teams to deliver reliable features.

Distributed Systems engineers at Datadog design, implement, and run in production the foundational platforms powering our applications. Your data pipelines will ingest, store, analyze, and query in real-time billions of events per second from companies all over the globe, with platforms optimized for durability, high availability, low latency, internet-scale footprint, and operability.

Speechify’s Platform team builds and maintains backend services powering text‑to‑speech, payments, analytics, and subscription APIs. As a Software Engineer, you’ll design, develop, and optimize robust APIs, oversee the backend landscape, and collaborate on B2B solutions for enterprise clients.

Network Connectivity Automation team at OVHcloud builds cloud‑native APIs that let customers provision and manage network resources across data centers. Senior Software Engineers design, develop, test and ship scalable Go micro‑services, leveraging AI tools to accelerate development while ensuring code quality and robustness.

Senior Software Engineer (Frontend) at Doctolib, leading Design System & Mobile team. Build scalable Web & mobile Design System with React & React Native, unify UX across platforms, mentor team, champion accessibility, leverage AI for DevX, support product teams, improve docs, CI workflows.

EPSA Innovation seeks a Business Developer in Nantes to drive commercial growth by connecting startups, SMEs, and mid‑sized companies with public innovation funding. The role involves prospecting decision‑makers, presenting tailored advisory services, negotiating contracts, and maintaining client relationships.

A dynamic internship opportunity for a Master student in marketing or commercial development, based in Rennes. The role blends academic learning with hands‑on commercial strategy, market research, and client relationship management.

Digital Factory team at Scalian develops software solutions for diverse industries, including defense projects. The Java React Developer collaborates in daily stand‑ups, designs new features, writes Java back‑end code, creates React front‑ends, and performs unit and functional testing within a DevOps pipeline using GitLab‑CI and Docker.