Top Software Engineer Jobs in Lyon

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, design and run experiments (A/B tests and AI evaluations), implement AI infrastructure for reliable LLM inference, and iterate quickly to scale production-ready LLM-powered products.

Build, ship, and operationally own security integrations and detections (WAF, RASP, API security, IAST, SCA) across Datadog tracing libraries. Design production-grade, polyglot instrumentation (primarily .NET/Java), measure performance and cost, mentor teammates, shape roadmap, and collaborate with product and platform teams.

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.

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.

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.

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.

The Senior iOS Engineer will lead engineering and product decisions, enhance the iOS app, and ensure an excellent user experience. Responsibilities include actively shipping production code, participating in product discussions, and maintaining app architecture.

Lead design and development of low-level Linux instrumentation and eBPF-based runtime security features for detection, monitoring, and workload protection. Drive architecture, implement performance-sensitive systems, establish testing methodologies, deliver end-to-end features, and provide technical leadership and cross-team collaboration across Datadog's security products.

Lead design and delivery of AI-powered visualization and investigation features using LLMs. Build reliable, explainable systems combining deterministic product capabilities with generative models, drive prompt/context engineering, evaluation frameworks, and cross-team product-focused technical leadership and mentorship.

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.

Build and maintain integrations for North's agentic platform, own the end-to-end integration pipeline, create evals and tests to ensure reliability, tune tool descriptions, and help other engineers add and maintain integrations while using AI responsibly to improve performance and quality.

Embed with strategic customers to design and deliver end-to-end technical solutions. Collaborate with customer engineers and executives, build integrations, own execution, and solve complex problems using code and software architecture.

Build ML prototypes and data pipelines, collaborate with researchers and product engineering to integrate models into Fusion, containerize and deploy applications, implement best practices, and document architectures to accelerate research-to-production workflows.

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.

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

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.

Design and develop services for automating work with a large server fleet while engaging in DevOps processes.

Design and develop services for monitoring servers, improve metrics pipelines, automate maintenance workflows, and investigate incidents to ensure infrastructure reliability.

As a Senior Software Engineer, you will enhance the REDAPL platform, leading initiatives in data ingestion, processing, and supporting infrastructure-related projects while mentoring other engineers.

The Lead Golang Software Engineer develops server solutions, leads technical designs and code reviews, mentors colleagues, and ensures the quality of engineering practices in the Commercial Systems unit.

The Python Software Engineer will develop and maintain test automation tools for hardware certification and improve Linux testing methods.

You will build and maintain container images, automate CI/CD processes, engage with the community, and mentor junior team members in a collaborative environment.

Drive process improvement, coach colleagues, and manage features in a distributed system for cloud automation and software operations.

Lead Python Software Engineer responsible for developing solutions, collaborating on designs, mentoring team members, and enhancing engineering practices.