Backend Developer Jobs in Île-de-France, France

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.

Stancer, a subsidiary of the Free group founded in 2018, provides simple and competitive payment solutions for small and medium-sized businesses, including online and in-store services with anti-fraud tools. As a Senior Backend Developer (Python) based in Paris, you will maintain and evolve the customer space, support complex internal solution development, participate in technical architecture decisions, and conduct technology watch.

You would join an internal squad in charge of building the foundations to help other squads to develop / deploy / monitor / secure their services. The team also develops transversal services such as the worker service, the realtime fraud detection service and monitors the Software Development Kit (SDK).

En tant que Backend Engineer - Elixir (all genders) , vous rejoindrez nos équipes et travaillerez pour un client majeur dans le secteur du luxe sur la technologie Elixir utilisée dans une solution OMS (Order Management System). Une bonne connaissance de React est un plus, mais le poste est orienté Back-end.

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.

Backend team at Terabase Energy in Paris builds and maintains the backend infrastructure for Construct, a B2B SaaS platform for utility‑scale solar construction. The role designs, develops, tests, and deploys backend services, collaborates daily with mobile, front‑end, AI, and external development teams, and applies Agile principles to deliver high‑quality code.

Prelude is a Paris-based team of 60 redefining user authentication and onboarding, turning it into a growth lever with a flagship OTP product that dynamically selects the best delivery channel while blocking fraud. As a Backend Engineer (Go), you will build and scale a distributed system using Go, DynamoDB, SQS, Redshift, and Lambdas, develop a full-stack app with Next on Vercel and gRPC, and work on the next version of the Prelude API. You will also help deploy the fraud prevention model, build

Air Apps is a family-founded company building the world's first AI-powered Personal & Entrepreneurial Resource Planner (PRP), with offices in Lisbon and San Francisco. The Backend QA Engineer will ensure the reliability, performance, and scalability of backend systems by testing APIs, databases, and backend services while collaborating closely with engineers.

Air Apps is building the world's first AI-powered Personal & Entrepreneurial Resource Planner (PRP) and seeks a DevOps Engineer – Backend to design, automate, and maintain the infrastructure powering its backend systems. Day-to-day work includes building CI/CD pipelines, managing cloud environments, enforcing infrastructure best practices, and collaborating with developers to streamline deployments and improve scalability.

Air Apps is a family-founded company building the world’s first AI-powered Personal & Entrepreneurial Resource Planner (PRP), with offices in Lisbon and San Francisco. As a Backend Software Engineer, you will design, build, and maintain server-side components, collaborating with product managers and frontend developers to deliver robust, scalable backend services.

Backend Software Engineer on Scaleway’s Hardware Operations team, building QCS – the core software engine that powers sovereign cloud infrastructure. The role writes clean Python code for hardware update, testing, and inventory systems, and may own either a React/TypeScript admin interface or DevOps pipelines with Terraform/Ansible.

Engineering team at Fabulous builds innovative health and wellness features such as marketing optimization engines and billing reporting. The Senior Backend Engineer designs and implements NodeJS APIs, architects event‑driven microservices in Google Cloud, and ensures scalable, test‑covered services.

Software Engineer, Backend (Safety) – Join Amo’s User Safety team to design and build robust, scalable safety platforms that protect users and ensure compliance with global regulations. In this role you’ll architect data pipelines, develop APIs and integrations, and automate complex decision‑making workflows.

Senior Backend Engineer at Epi Company, working on the Disputes team within the European Payments Initiative (Wero) to build reliable, scalable payment services that simplify disputes across a pan-European digital wallet. You will own backend features end to end—from API design and implementation to deployment, monitoring, and operational support—while leading the architecture and evolution of cloud-based microservices.

Software Engineer, Backend (Rust) – Join Amo’s early‑stage backend team to design and build scalable systems that power both server‑side and mobile components. In the first months you’ll collaborate closely with senior engineers, gradually taking ownership of core services and a shared Rust library used across iOS and Android.

Backend Engineering at Matera builds a robust, high‑performance backend platform using Ruby on Rails, Kubernetes and Terraform. The Staff Software Engineer defines long‑term architecture, sets coding standards, mentors developers and drives high‑impact tech initiatives while improving developer experience with AI‑assisted tooling.

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.

Backend Experience team – Innovate squad builds high‑risk backend experiments to validate bold product bets for Yubo’s social discovery platform. The role designs, ships, and operates resilient, scalable services, defines success metrics, and iterates quickly based on experiment outcomes.

Au sein de Skills & Affinity (Groupe Scalian), vous contribuez au développement d'une plateforme Cloud privée de nouvelle génération basée sur des technologies Open Source. Vous développez les services Backend en Go, concevez et faites évoluer les API de la plateforme Cloud, et implémentez les mécanismes de communication asynchrone.