Backend Developer Jobs in France

Post Sales team at Veepee builds the product that lets members manage personal data, track orders, and raise support queries. The Backend Developer designs and refactors APIs, ensures scalability, reviews code, and mentors junior developers.

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.

Backend Developer Python at Octopus Energy in Paris. Build scalable backend services for green energy platform, focusing on onboarding funnel and client dashboard.

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.

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.

Backend Engineer at ALTEN Sophia Antipolis, part of a high‑velocity agile scrum team delivering user stories in a startup‑like environment. The role focuses on designing, coding, and testing C++/Java services, building RESTful APIs, and ensuring quality through unit, performance, and integration tests.

Backend Engineering team at ALTEN delivers high-quality software solutions for international clients in a fast‑paced, startup‑like environment. The role designs, develops, tests and documents backend services, databases and APIs while collaborating with product managers and analysts.

Backend Engineer at ALTEN, a European leader in high‑tech engineering, building scalable software for diverse industry clients. In an Agile Scrum team, you design, develop, and test high‑quality backend solutions, model databases, and collaborate with Product Managers to validate features.

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.

Growth Studio (Engineering) at Proton builds the marketing technology stack that powers user acquisition and engagement. The Backend Engineer designs and implements key components of the MarTech platform using Python and PHP, collaborates with cross‑functional stakeholders, and ensures security and scalability.

Pennylane Engineering builds a scalable financial operating system for European SMEs. As a Backend Engineer you will design and implement Ruby on Rails services, collaborate with product and design to deliver end‑to‑end features, and ensure reliability in production.

Software Engineering team at ALTEN delivers high‑quality backend solutions for international clients. The role designs, develops, tests, and maintains software in an Agile Scrum environment, collaborating with product managers and analysts.

Adaptive ML builds foundational generative AI tech, enabling models to learn from user interactions. As a Backend Engineer on the Product Team, you’ll design, iterate, and implement high‑performance Rust back‑ends, manage GPU workloads, and create scalable abstractions.

Backend Engineer on Adaptive ML’s product team building high‑availability PostgreSQL and ClickHouse pipelines for generative AI products. Own data layer architecture, develop Rust software, design schema evolution, and ensure reliability at scale.

Air Apps’ Backend Engineering team builds AI‑powered resource planning services. The role designs and implements RESTful/GraphQL APIs, microservices, and cloud infrastructure on GCP, ensuring secure, scalable, and reliable backend systems.

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.

Slash Team at Riot Security builds email security that reads attackers’ emails like humans. The Backend Engineer designs detection logic, in‑email alerts, and admin tooling, shipping features end‑to‑end while shaping backend standards.

Backend Engineer on Riot Security’s Awareness Team, building chat‑based cybersecurity courses that millions of employees actually engage with. The role ships end‑to‑end features, builds robust systems for millions of learners, and shapes backend standards while leveraging AI tooling daily.

ALTEN’s Backend Engineering team builds high‑quality, scalable software for international clients across aerospace, automotive, and finance. The role involves analyzing specifications, designing and developing robust solutions in C++, Java, or Python, and ensuring quality through unit, performance, and integration testing.

Security & IT – IT team builds a high‑scale, real‑time digital platform serving millions of active users daily. The Backend Engineer designs and builds robust microservices, ensures scalability, reliability and maintainability, and supports 24/7 system stability.