Top Software Engineer Jobs in France

Build and maintain a multi-tenant, serverless B2B Digital Showroom on GCP using Node.js, React, and Next.js. Design scalable, low-latency distributed systems, deliver high-quality code with automated testing, investigate customer issues, collaborate cross-functionally, and grow into a senior engineering role through code reviews, pairing, and technical leadership.

Join a team of engineers to work on a complex codebase while utilizing MongoDB, Node.js, and Vue.js. Responsibilities include developing and improving functionalities, collaborating within squads, and onboarding new engineers.

As a Website Software Engineer, you will develop and optimize website features, support marketing initiatives, and contribute to architectural decisions while working with a creative team.

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 and ship full‑stack web features and microservices for a cloud‑native genomics platform. Lead design and code reviews, mentor engineers, and develop production LLM applications (RAG, evaluation, citations) using managed endpoints and containerized CI/CD deployments. Collaborate with Product, QA, and Architecture to deliver reliable, regulated healthcare software.

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 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 Senior Software Engineer will solve scaling bottlenecks, deploy new features, manage production issues, design scalable architecture, and collaborate on project planning.

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.

Design and build scalable serverless solutions on GCP using Node.js, React and Next.js. Map large PIM datasets to retailer formats, own microservices and deployments, champion TDD and observability, mentor engineers, and collaborate cross-functionally to deliver customer-focused sales enablement tools.

Lead backend development of Diabolocom's Voice Squad, building and optimizing core telephony services (call routing, media handling). Design and implement distributed systems, refactor for scalability and faster delivery, work across Java/Kotlin/Go, Spring Boot, PostgreSQL, RabbitMQ, Redis, Docker. Mentor teammates, own architectural decisions, improve existing codebase, and drive high-performance, reliable voice platform.

Design, build, and optimize backend services for data gathering, processing, and delivery. Define and maintain service contracts, ensure high test coverage, observability, and documentation. Make architectural decisions for distributed systems, collaborate with product teams, and maintain/ improve an existing Kotlin/Java codebase.

Build and maintain API integrations and the connectivity platform linking EV chargers, vehicles, and OEMs. Improve reliability, observability, and scalability; develop automations and internal tools for monitoring and triage; define SLAs and alerting; collaborate with product and engineering teams to balance stability and delivery.

As a Software Engineer, you will design and develop applications, write clean code, engage in code reviews, optimize systems, and explore new technologies in a remote team.

Design, develop, and maintain Gradio and Trackio, architect Python frameworks for ML developers, collaborate with the community, and integrate frontend technologies.

Design, implement, and maintain onboard software packaging, deployment, and runtime container environments for satellites. Improve bundle management, Linux infrastructure, CI/CD pipelines, validation, and scaling for multiple programs.

Join the DevOps/Releases team to support software quality, product customization, packaging and deployment. Contribute to manual and automated testing, bug analysis and resolution, build infrastructure tools, and work on small-to-medium tasks across software and sensor-integrated products while learning the codebase and deployment processes.

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.

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 internal AI platform surfaces and infrastructure end-to-end: Cortex UX, platform services, deployment pipelines, observability, governance, and developer tooling to enable teams and agents to build and operate AI-powered features.

Design and build a scalable forecasting platform handling diverse data types; develop real-time exploration tools, secure APIs and SDKs; implement monitoring, alerting, and data scraping automation; integrate ML models into pipelines; iterate from user feedback; and mentor early engineering hires.

Lead architecture and development of a low-latency trading stack focused on data infrastructure and control workflows. Design high-performance datastores, build a data platform for quantitative research, create control tools to safeguard operations, own systems end-to-end, and mentor engineers while collaborating closely with researchers.

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.

Join the Core Web Frontend team to build and maintain frontend frameworks, libraries, tooling and developer experience. Design and implement the integration layer between UI components and backend services, drive best practices, improve performance and CI/CD, and support other teams with modular, secure, and scalable frontend solutions.

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.