Backend Developer Jobs in Brittany, France

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.

Engineering Department at HELPLINE focuses on digital transformation projects for clients across Europe. As a Backend Java Developer you will design and implement micro‑services APIs, manage data with MariaDB and MongoDB, and ensure robust network communication.

NEXTON, a digital consulting and engineering firm founded in 2011 with over 450 experts, is hiring a Backend Developer (CDI) based in Nantes, France. In an agile team handling high-traffic applications, you will design, develop, deploy, and maintain backend features, contribute to DevOps deployment and monitoring, and drive continuous improvement across a varied project ecosystem.

Inetum’s Brest team builds scalable Java backend services for digital transformation clients. The role designs and develops robust REST APIs, collaborates with front‑end engineers, and mentors junior developers while ensuring performance and security.

Notre équipe Price Hub recrute son ou sa Tech Lead à Nantes DECATHLON accélère sa transformation pour devenir LA plateforme numérique sportive mondiale. Le digital et l'IA sont les moteurs de notre ambition 2026-2030 pour rendre le sport durablement accessible.

Stage de fin d'études - Ingénieur(e) Backend Python ATEME | Rennes, EMEA, FR Ingénieur(e) Backend Python Modernisation API OpenAPI & Architecture Logicielle Si vous avez déjà regardé un programme à la télé ou un film sur votre téléphone ou tablette, il est fort probable que cette expérience ait été rendue possible grâce à une solution Ateme développée par nos équipes d’ingénieurs primés. Ateme (PARIS : ATEME) est le leader mondial de la diffusion vidéo , partenaire des plus grands fournisseurs d

En tant que Développeur Backend Java Confirmé , vous interviendrez sur des projets de conception, de développement et d’évolution d’applications stratégiques pour l’un de nos clients basé à Brest. Vous contribuerez à la réalisation de solutions robustes, performantes et évolutives, tout en garantissant la qualité, la maintenabilité et la sécurité des développements réalisés.

Ateme recherche, en stage de fin de d’études , un(e) Ingénieur(e) Backend. Principales missions : Au sein de l'équipe R&D Pilot Manager , vous contribuerez au développement d'une plateforme permettant d'installer, mettre à jour, administrer et superviser des applications déployées dans des environnements Kubernetes.

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.

Ippon seeks a Business Developer to expand its client portfolio in Nantes, blending sales expertise with a passion for technology. The role involves prospecting key accounts, building lasting relationships, and crafting tailored commercial proposals alongside technical experts.

This alternance role in Rennes offers students a chance to blend academic theory with real-world business development experience. The position focuses on sourcing and qualifying commercial opportunities, engaging prospects via phone, email, and LinkedIn, and driving the sales cycle from initial contact to contract signing.

Marketplace team at Maisons du Monde drives the growth of third‑party sellers on its e‑commerce platform. The Business Developer sources, recruits and onboards new vendors, negotiates contracts, and manages their performance to increase GMV, while coordinating with internal e‑commerce and product teams.

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

The Reliability Test Development Engineer at Microchip Technology Inc. implements, monitors, and analyzes laboratory-based reliability tests to ensure the robustness and compliance of semiconductor components developed across the company's Business Units. Day-to-day work includes defining and validating test setups, executing test campaigns, overseeing instrumentation and monitoring, analyzing results for anomalies, and drafting test reports.

Teya Payments team transforms merchant services for UK SMBs, delivering faster payouts and flexible pricing. As a Business Development Consultant you will close deals, generate leads, and onboard merchants within hours, leveraging Teya's sales tools and commission structure.

Digital Pole at ASI Nantes, a French digital consultancy focused on responsible tech, builds custom Java applications for clients. The Senior Java Developer leads design, estimation, coding, testing and documentation while championing eco‑design practices and Agile Scrum ceremonies.

Safran.AI Product & Engineering – SW Production team builds AI-driven solutions for defense, aerospace and industry 4.0. The Senior Front-End Developer designs, architects and implements next‑gen user interfaces, integrates APIs, ensures performance and UX quality, and leads front‑end technical decisions while collaborating with back‑end and domain experts. Paris or Rennes, hybrid (3 days onsite) or full‑remote available, full‑time role.

The Senior Development Officer (Senior Building Inspector) role sits within Cornwall Council's Building Control service, ensuring buildings across Cornwall and the Isles of Scilly are safe, sustainable, accessible, and compliant with Building Regulations. Day-to-day work includes undertaking complex building regulation assessments and inspections, providing expert regulatory advice to customers, developers, and construction professionals, supporting compliance and enforcement activities, and men