Top Software Engineer Jobs in France

As a Senior Software Engineer at Razer, you will develop high-performance C++ systems for real-time game data acquisition, event tracking, and video generation, while optimizing engine performance and ensuring system reliability.

Lead the architecture, development, and delivery of scalable backend systems, APIs, data pipelines, and services supporting global 3D and computer vision applications. Drive technical direction, system performance, resiliency, observability, and maintainability. Mentor senior engineers, conduct architecture reviews, lead cross-functional initiatives, influence hiring and team growth, and shape engineering culture and long-term technical vision.

The Senior Software Engineer will design and develop high-quality web and mobile applications, ensuring code quality while collaborating with product teams and mentoring junior engineers.

Lead verification and validation of embedded, front-end, and back-end clinical software. Plan, write, and execute tests, maintain test environments, ensure traceability to requirements, support design controls, risk management, and regulatory submissions, and improve testing processes and automation.

Build and maintain user-facing features and interfaces for Restream web services. Design and implement UI and business logic, collaborate with product designers and engineers, perform code reviews, improve reliability and scalability, and evaluate emerging technologies.

Join the Kubernetes product team to design and implement Kubernetes operators and addons, write high-quality Golang and Python code, debug issues, collaborate with a distributed team, mentor colleagues, and contribute to open-source integration and lifecycle management. Travel 2–4 weeks yearly for team events.

Build and maintain services and tooling to automate and secure network lifecycle across data centers. Implement CI/CD, staged rollouts, drift detection, observability pipelines, and APIs that integrate network source-of-truth with the cloud platform. Collaborate with network engineers and SREs to turn operational pain into production-grade automation and tooling.

Build and maintain backend services, APIs, automation tools, dashboards, and lightweight web apps to support quantitative researchers. Deploy and operate internal applications using cloud, containers, and CI/CD; collaborate with researchers to simplify workflows, troubleshoot systems, and improve documentation and onboarding.

As a Growth Software Engineer, you will scale user and business growth through experimentation, data-driven development, and cross-functional collaboration, particularly in user engagement and retention.

The AI Software Engineer will develop and improve Joko's AI shopping assistant, focusing on architecture, evaluation, data management, and personalized user experiences, while collaborating with product teams.

Develop core backend components for a blockchain network, focusing on networking, reliability, scalability, and high-quality software practices.

Develop and enhance front-end, server-side, and database applications, focusing on blockchain products while ensuring high performance and security.

As a Distributed Systems Engineer, you'll design and evolve LiveKit's core systems, implement resilient architectures, and enhance reliability and developer velocity, working on critical features in production environments.

Design and evolve core control, data, and observability systems; implement resilient region-spanning architectures; build libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, and testing; and shape platform capabilities across identity, scheduling, observability, and distributed state management.

The role involves designing and evolving core systems at LiveKit, implementing resilient architectures, and building tools to enhance system reliability and developer speed. Strong distributed systems experience and programming skills are essential.

Design, implement, and operate low-latency, highly available distributed control, data, and observability systems. Build region-spanning architectures, libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, testing, and real traffic; and shape platform capabilities around identity, scheduling, observability, and distributed state management.

Join Eight Sleep as a Senior Android Software Engineer, focusing on optimizing mobile app performance and collaborating with various teams to enhance user experience.

As a Senior Software Engineer, you will develop and manage a MongoDB solution on various platforms, ensuring reliability and security while contributing to a small team focused on impactful projects.

Lead architecture and platform design for a quantum-computing software stack: design services, APIs, storage, data ingestion, and orchestration; enable hardware/software interaction loops; partner with researchers and data engineers; drive long-term roadmap and mentor engineering teams.

Build and improve Restream’s web interfaces and user-facing features for the AI Clips team. Design UI and business logic, collaborate with product designers, participate in code reviews, improve system reliability, and evaluate emerging technologies. The role requires strong JavaScript and TypeScript expertise, advanced React knowledge, CSS preprocessor experience, and familiarity with backend development, cloud infrastructure, containers, and continuous deployment.

Two-year rotational R&D program for an onsite Software Development Engineer in Saint-Etienne. The role develops and maintains fiber monitoring software, contributes across the full software lifecycle, collaborates with Agile, Security, DevOps, Marketing, and Engineering teams, and supports field issue analysis. Candidates need an engineering degree, French and English fluency, willingness to complete international rotations, and experience with Java, Spring, J2EE, TypeScript, web technologies, REST, databases, and Linux.

As a Senior Software Engineer at Swile, you will solve engineering challenges, design solutions, mentor others, and collaborate with teams to enhance user experiences.

Design and maintain embedded software and OS (Embedded Linux/RTOS) for UAVs, develop sensor drivers, integrate algorithms, improve telemetry and firmware, uphold coding standards, and collaborate with multidisciplinary teams to deliver field-ready autonomous systems.

The Embedded Software Engineer will lead Linux BSP development for video sensor integration, manage camera drivers, and validate hardware designs within a collaborative team environment.

Design and own firmware architecture for MCU-based launchers and controllers. Develop low-level drivers and communication protocols, implement deterministic real-time control, perform hardware bring-up and debugging, build unit/HITL tests and CI/CD pipelines, and implement secure boot and OTA update mechanisms for production-deployed systems.