Top Software Engineer Jobs in France

Design and implement backend trading services, own features end-to-end (schema, API, tests, UI integration), contribute to real-time infrastructure and client-facing APIs, and write integration tests against real dependencies.

Software Engineers at QuantCo will design and develop scalable solutions, integrate models into client businesses, and improve products based on client feedback.

As an Ubuntu Core Software Engineer, you will design and implement features for the embedded Linux operating system, maintain boot mechanisms, debug system-level issues, and collaborate with a global team.

Design, develop, and maintain software applications, write efficient code, collaborate with teams, conduct testing, and provide technical support.

Full-stack Developers at QuantCo build user interfaces for machine learning solutions, collaborating with data scientists and engineers to deliver actionable products.

As a Senior Software Engineer, you'll enhance REDAPL, lead projects, focus on data ingestion and query pipelines, and ensure platform reliability.

Responsible for developing GPU Monitoring features and maintaining eBPF functionality, investigating production issues, and shaping architecture within the Datadog Agent.

The role involves developing GPU Monitoring features and maintaining eBPF functionality, debugging production issues, and contributing to product architecture in Datadog's Agent over various Linux environments.

The Software Engineer will develop backend systems using Rust, manage multimodal data, and improve data infrastructure with a focus on performance and design ownership.

As a Back End Software Engineer, you will write maintainable code, collaborate on features from design to production, and engage with Customer Success to enhance user experience.

The role involves optimizing hardware support within a software stack for AI model deployment, collaborating with teams and hardware vendors to enhance performance and portability across platforms.

Canonical seeks open-source enthusiasts to optimize Ubuntu for new silicon technologies, collaborating with teams and customers to enhance software quality and performance across various platforms.

Build and ship full‑stack features for North, an enterprise AI workspace. Develop secure autonomous agents, execution engines, integrations, observability and evaluation systems. Collaborate with researchers to productionize models and deliver performant, low‑resource deployment code while adhering to strict security and privacy constraints.

Develop software to enhance consultant productivity, create SaaS products, design architecture for data processing, and assess technologies.

As a Software Engineer at Bitstack, you will build scalable products, work in a cloud-native environment, and collaborate with teams to push the product forward while ensuring compliance and security.

Join a small team to develop and operate Scaleway's non-relational database products (Redis, MongoDB). Ensure high-performance, stable production, deploy to new regions, perform code reviews, write docs, follow Agile, and collaborate cross-functionally.

Contribute to backend development of IAM services: build authentication and access-control features, improve security and observability, implement secret scanning and API key tracking, design authentication/authorization policies, and collaborate with engineers, product, and security teams.

Design, build, and maintain backend services for Scaleway's network connectivity products. Implement gRPC APIs in Rust, work on InterLink, Site-to-Site VPN, and Public Gateway features, debug complex networking/distributed systems issues, resolve customer incidents with support, participate in architecture and reliability improvements, and collaborate across product, documentation, and engineering teams.

Ownership and development of Scaleway's S3-compatible Object Storage: lead architecture projects (new regions, service classes), implement features, bridge low-level system administration and DevOps, troubleshoot distributed storage incidents, perform level-2 on-call, coordinate hardware interventions, review code, and maintain documentation and onboarding guides.

Design, build, and optimize highly available Go backend services for IAM and internal API Gateway. Improve scalability, resiliency, latency, networking, and CI/CD; troubleshoot production issues; contribute to architecture, documentation, and low-level system knowledge sharing.

Contribute to development and maintenance of user account services: build new features, optimize deployment pipelines, design scalable systems, reduce technical debt, improve code quality, and collaborate across frontend/backend and DevOps to ensure reliability.

Design and build core IaaS/PaaS components (APIs, backends, worker services), add features, improve test coverage and resilience, write technical documentation, run operational rotations, resolve customer incidents, and collaborate across Product, Design, and Documentation.

Develop and maintain backend and admin software to operate bare-metal cloud infrastructure. Implement Python services, build React/TypeScript frontends or manage IaC (Terraform/Ansible), optimize deployments, refactor legacy code, and collaborate in a Scrum squad to ship next-generation infrastructure features.

Develop and maintain Python backend systems powering hardware update, testing, and inventory; own either React/TypeScript frontends or DevOps/IaC pipelines (Terraform, Ansible, GitLab CI/CD, Docker, Kubernetes, Proxmox); bridge low-level hardware data to web APIs; design and ship infrastructure milestones; optimize and test existing code; participate in code reviews and Scrum ceremonies.

The Senior iOS Engineer will lead engineering decisions, ship production code, and enhance the app architecture while ensuring a great user experience.