Top Software Engineer Jobs in France

As a Senior Software Engineer, you will design and build backend features primarily in Scala, collaborate with teams, ensure code quality, and support full-stack needs.

Design and implement core Web3 protocol features and secure smart contracts in Solidity. Integrate blockchain solutions with cross-functional teams, ensure scalability and performance, stay current on EVM internals, conduct code reviews, and mentor junior engineers.

Lead design and development of Windows desktop applications, ensuring best practices in architecture, accessibility, and performance while collaborating with product teams.

The Principal Engineer will lead the development of a Test Systems Software platform by designing architecture, writing code, managing operational requirements, and guiding a team to ensure robust software for testing environments.

Lead technical architecture and engineering roadmap, develop scalable systems, mentor engineers, drive improvements and champion technical innovation in AI solutions.

Design and implement a video processing engine, develop a cross-platform rendering engine, integrate systems, and optimize performance while collaborating with other engineers.

Design and build key features for an AI coding platform, focusing on user experience and product growth in a collaborative environment.

The role involves improving Firefox development workflows, mentoring team members, collaborating with other teams, and analyzing development data to enhance productivity.

Be the hands-on technical owner of the LiteAPI product: design, implement, and operate backend/API infrastructure, lead technical decisions, work closely with product, stakeholders, and customers, and mentor engineers while shipping high-impact features in a fast-moving startup.

Design, develop, and maintain Python and Go microservices for data ingestion and processing; integrate backend services with BigQuery and cloud data platforms; implement REST APIs; build scalable data processing pipelines using Apache Beam and Dataflow; test and troubleshoot distributed systems; review designs, estimate work, mentor junior developers, and drive performance and reliability improvements.

Develop core backend components for a blockchain network, focusing on reliability and scalability, mainly using Rust. Ensure code quality through testing and debugging.

Design, build, deploy, and maintain scalable AI services, integrate DevOps practices, contribute to R&D, and mentor team members.

Work directly with founders to build and iterate the platform’s initial features, owning full-stack development, architecting core infrastructure, and turning customer feedback into production-ready functionality for MCP servers.

Work directly with founders to build and iterate on an MCP hosting platform. Ship full-stack features using TypeScript (React, NestJS), design scalable foundations, translate customer feedback into product, and operate independently in a fast-paced startup.

Lead development of a ruggedized, secure, scalable edge video-intelligence platform. Implement embedded services on NVIDIA Jetson, integrate and optimize AI inference, build APIs, OTA and secure device management, enable video streaming and telemetry, and ensure reliability with CI/CD, monitoring, and automated tests.

First software developer to design, build, and maintain core SaaS platform features; define system architecture for scalability; own projects end-to-end; ensure code quality and security; collaborate with founders to align technical work with the companys energy-transition mission.

As a Senior Fullstack Engineer, you will lead feature development from conception to deployment, ensuring user needs are met and maintaining high deployment frequency.

As a Senior Software Engineer, you will develop secure, scalable medical imaging platforms, architect distributed systems, and work with AI diagnostic tools.

The Senior Full-stack Engineer will design and build features in TypeScript, driving projects with a product mindset and collaborating in a dynamic startup environment.

The Staff Software Engineer will lead technical direction, improving system design and mentoring others while writing code and collaborating across teams for a cloud-based generative coding platform.

Join Ledger's web engineering team to enhance the e-commerce platform by writing secure and maintainable code, mentoring others, and improving software practices.

As a Fullstack Software Engineer at Amplemarket, you will design and build features for our AI-powered sales platform, collaborating with co-founders and cross-functional teams to enhance user experience and solve complex problems.

As a Frontend Software Engineer, you will build user interfaces for Amplemarket's sales platform, collaborating with co-founders and cross-functional teams to enhance product usability and user experience.

Amplemarket seeks a Senior Backend Software Engineer to build reliable backend systems, design APIs, collaborate cross-functionally, and drive product development.