Top Software Engineer Jobs in France

Design and evolve core cloud platform services, control-plane components, and internal APIs. Build platform abstractions, drive architectural initiatives (gRPC migration, eventing), write production-grade Go code, improve scalability and developer experience, and support production systems and incident response when needed.

Design and evolve core cloud platform services, control-plane components, internal APIs, and platform abstractions. Build production-grade Go services and tooling, drive architectural initiatives such as gRPC migration and eventing foundations, and improve scalability, reliability, and developer productivity. Collaborate across engineering teams, support production systems and incident response, and drive long-term technical solutions for managed cloud and enterprise deployments.

Design and scale backend systems, APIs, and services for Nango’s open-source developer infrastructure platform. Build APIs, SDKs, UIs, and runtime systems, optimize performance and reliability, solve integration challenges with customers, shape the roadmap, and maintain the open-source repository. The role requires strong ownership, product thinking, developer empathy, communication, and autonomy in a remote-first startup environment.

The Backend Software Engineer will design and implement communication systems for tactical C2 applications, ensuring seamless data flow and fault tolerance in challenging environments.

As a Senior Software Engineer, you will design and develop the Metis system, ensuring operational integrity and quality, while addressing challenges in distributed systems and collaborating with teams.

Design and develop the Metis system, ensuring its quality in a remote team while operating and maintaining distributed systems.

Performs software and system safety analyses for autonomous vehicle platforms, including HARA, FMEA, FTA, STPA, freedom-from-interference, and code-level hazard evaluations. Derives and traces safety requirements, defines fail-safe mechanisms, reviews safety-critical C++ and Python code, supports safety-case development, and collaborates with robotics, hardware, systems, software, and test teams to verify compliance and enable airport deployment.

Build and enhance GraphAware Hume, a graph-powered analytics platform. Responsibilities include developing APIs, designing secure and scalable access-control systems, orchestrating workflows for graph analytics and real-time insights, optimizing application performance, contributing to architecture and technical design, and collaborating with distributed engineering teams.

The Backend Engineer will develop and maintain features for Restream web services, design backend APIs, ensure infrastructure resilience, and contribute to a collaborative team environment.

Work on the Xet Storage team building and operating the Xet storage backend and xet-core (Rust) and hf-xet (Python). Design, implement, and operate high-performance, scalable storage systems, contribute to open-source, and support production monitoring, alerting, and distributed debugging in a remote, fast-moving environment.

Develop and optimize Soroban smart contracts and integrate anchor services on the Stellar network for cross-border payment solutions. Collaborate with cross-functional teams, test and debug smart contracts, document development processes, provide technical support, and stay current with blockchain and payments technology trends to ensure secure and efficient implementations.

Implement and optimize EVM-compatible features, reduce gas usage, develop and test smart contracts, collaborate on Ethereum infrastructure, and provide technical support.

Build and maintain high-security mobile wallet apps using React Native, Swift, or Kotlin. Implement biometric authentication and secure key storage, collaborate with cross-functional teams, debug performance issues, and propose UX and security improvements.

Build and scale backend services, integrations and AI-powered workflows for an insurance-focused product. Own features end-to-end, improve system reliability, performance and observability, work with unstructured data and production constraints, and collaborate closely with founders and users to turn feedback into shipped product improvements.

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.

As a Software Engineer, collaborate to research, develop, and deploy impactful features and enhancements. Maintain code quality and monitor production systems, while working cross-functionally to frame and execute projects that align with business needs.

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.

The Frontend Developer will design and implement the web frontend for the SaaS platform Construct, collaborating with various teams and enhancing the user experience while adhering to Agile principles.

The Senior Software Engineer will design and maintain a Web and Mobile Design System using React and React Native, drive convergence between platforms, ensure accessibility, mentor team members, and improve developer experience through tooling and automation.

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 ship secure, production-ready CI/CD and AI-integrated features end-to-end. Design, implement, and iterate on products (e.g., hardened GitHub Actions, agent features), work closely with Product and front-end teams, make architectural decisions, and extend Chainguard's agentic AI capabilities into customer-facing experiences.

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 operate an internal AI-driven developer platform that supplies LLMs with the right code, docs, and context; automate code changes and PR proposals; integrate GitHub, CI/CD, observability and internal systems; evaluate generated code and run feedback loops to ensure secure, reliable, production-ready developer tooling.

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.