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.

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 a Java Developer, you will contribute to the development of high-value projects using Java and SpringBoot, while working in an Agile environment and enhancing your technical skills.

The Software Engineer will design, develop, and maintain backend APIs, enhance backend architecture, and collaborate on B2B solutions while ensuring performance and scalability.

Join a small agile full-stack team building cloud-native applications to accelerate medicine manufacturing and supply. Design, deliver, and run scalable, maintainable microservices; translate requirements into performant code; own technical decisions; apply CI/CD and DevOps practices; use IaC for cloud deployments; collaborate with product and data teams and promote engineering best practices.

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.

Lead organization-wide software and AI engineering strategy, architect large-scale data and LLM integrations, drive deployment and CI/CD practices, mentor technical leaders, and convert prototypes to production while ensuring AI evaluation, observability, and high code quality.

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.

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.

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 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.

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.

Drive end-to-end performance and scalability testing for NVIDIA DGX Cloud across Kubernetes and NVIDIA components. Develop automated workload tests, monitoring and CI/CD frameworks, triage complex distributed-system issues, collaborate with customers and upstream open-source communities, and document and present findings.

Build and own end-to-end features across backend and frontend: design backend services and data models (Python/Django), implement RESTful APIs, create reusable frontend components (TypeScript/React), write tests, participate in code reviews, maintain production reliability and security, and collaborate with product and design.

Develop and maintain C# applications, design robust solutions with the team, write unit tests and occasional end-to-end test plans, conduct code reviews, and diagnose and resolve technical issues to ensure code quality and reliability.

Drive performance and scale characterization for NVIDIA DGX Cloud across Kubernetes and NVIDIA components. Build automated tests, monitoring, and CI/CD for large-scale GPU-accelerated workloads. Triage and resolve distributed systems performance issues, collaborate with researchers and upstream open-source communities, and present findings at conferences.

Build and maintain reliable API integrations with EV chargers, vehicles, and OEM platforms. Improve connectivity platform reliability, observability, and scalability. Develop automations and internal tools, define SLAs and monitoring, reduce incidents, and collaborate across teams to support Enode's energy device integrations.

Build and scale a blockchain data platform handling petabytes of on-chain data. Design and implement distributed systems, data ingestion/decoding pipelines, and performant SQL processing. Write production code (Kotlin, Go, Java, Rust), improve developer experience, automate operations (including AI-driven automation), and own platform components.

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.

As a Backend Software Engineer, you'll design scalable backend systems, optimize database performance, and collaborate with front-end and DevOps teams.

Contribute to Juju's development, collaborate with teams on distributed systems, debug issues, and enhance cloud automation features.

Develop and optimize algorithms for battery and renewable energy projects, analyze market data trends, and ensure algorithm performance.

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.

Build and maintain DataDome's client-side JavaScript Tag and server-side integration modules for edge runtimes and backend platforms. Own integration components across multiple languages, improve CI/CD, testing, performance and security, mentor engineers, support onboarding and incident response, and drive technical direction for integrations.