Top Software Engineer Jobs in France

Build and maintain full-stack web features and microservices for a cloud-native healthcare platform. Develop production LLM applications, including retrieval-augmented generation pipelines, prompt systems, structured outputs, citation handling, evaluation pipelines, and guardrails. Lead technical and design reviews, mentor junior engineers, prototype new product ideas, and collaborate with Product, QA, Architecture, and PMO teams to meet product and regulatory requirements.

Build and ship scalable full-stack software across the complete product lifecycle, from requirements and architecture through implementation, QA, deployment, and monitoring. Translate business goals into high-impact features, challenge assumptions, communicate with stakeholders, and maintain strong product judgment, code quality, and architectural integrity in a fast-paced fintech environment.

Lead front-end development for partner-facing financial web products, including embeddable onboarding modules, partner dashboards, and self-service workflows. Build complex multi-step forms and data-heavy interfaces with React and TypeScript, contribute to Node.js server layers, collaborate on API contracts, and work closely with product, design, and backend teams. Own features from design handoff through production release while maintaining multiple codebases and upgrading business-account APIs.

Build and deploy production software across front-end, APIs, backend services, data, and cloud infrastructure. Develop AI-enabled features and agent workflows using models, retrieval, tool calling, structured outputs, and evaluations. Apply secure engineering, infrastructure as code, observability, automated testing, and CI/CD practices. Work directly with clients, troubleshoot production systems, participate in reviews, and contribute reusable engineering patterns.

The Software Engineer will develop AI-based capabilities, maintain software stacks, mentor others, and tackle engineering challenges across various technical fields.

Design and build high-performance, reliable software systems and reusable components. Own technical designs, contribute to architecture, solve concurrency and performance challenges, troubleshoot complex issues, and improve system robustness. Develop production-grade software in Linux environments, participate in code reviews and automated testing, and collaborate with researchers and engineering teams to deliver effective technical solutions.

Develop and improve flight dynamics algorithms for orbit determination, propagation, maneuver planning, conjunction assessment, collision avoidance, and attitude modeling. Build and maintain backend software services for satellite ephemerides, maneuvers, conjunctions, and target orbits. Collaborate with mission and systems engineers to translate requirements into operational outcomes, and support satellite operations during launches, anomalies, and conjunction responses.

Develops trusted-content standards, automation libraries, and software applications using Rockwell Automation technologies. Designs integrated industrial automation systems, supports firmware and software integration, evaluates industry standards, and advances digital engineering strategies including digital twins, automated code, and AI-assisted workflows. Collaborates with product, engineering, consulting, and customer co-innovation teams, supports customer projects and events, and helps identify new industries and applications for scalable automation solutions.

Build and maintain large-scale JavaScript data collection applications and resilient web scrapers using NestJS, databases, microservices, and cloud technologies. Develop REST APIs, streaming and distributed systems, validation pipelines, monitoring, alerting, and automated recovery. Optimize performance and memory usage, troubleshoot scraper failures and data drift, collaborate on architecture, document solutions, mentor teammates, and deliver reliable customer insights.

Leads the architecture, development, release, and maintenance of Android and iOS applications. Translates business requirements into technical solutions, ensures application quality and performance, and guides architecture and technology decisions. Manages and mentors a distributed six-person team, coordinates with product, design, QA, and backend teams, and drives timely releases. Promotes engineering best practices, testing, documentation, collaboration, and AI-assisted development.

Design, build, and deploy production-grade agentic AI systems for enterprises: multi-agent orchestration, RAG pipelines, multi-LLM integration, LLMOps, observability, safety and cost controls, lead client engineering engagements, and publish reusable patterns and measurement frameworks.

Design and build C2 and mission-planning software for interceptor systems. Develop high-performance C++ components with Python bindings, implement optimization, trajectory planning, sensor fusion, and real-time replanning algorithms, and ensure reliability through testing, benchmarking, code reviews, and performance analysis. Collaborate with systems, guidance, and estimation engineers on safety-critical defense software.

Software Engineer Interns will contribute to Pigment’s SaaS platform through backend, frontend, infrastructure, or data-ingestion projects. Responsibilities include upgrading and improving connectors, developing shared tooling, exploring LLM-assisted model imports, translating structures and formulas, and creating validation tests. Interns collaborate with experienced engineers across the application lifecycle and deliver reliable, scalable code using Pigment’s cloud-native technology stack.

Develop backend services, workflow automation, AI tooling, and shared ground-platform capabilities. Maintain infrastructure reliability, CI/CD pipelines, message queues, observability, and Kubernetes-based systems. Evaluate technologies, improve development workflows, and collaborate with software engineers and satellite operators. Participate occasionally in SatDevOps rotations, spacecraft anomaly investigation, and real-time incident response.

Designs, builds, tests, deploys, monitors, and operates full-stack applications and Domain APIs using Domain-Driven Design. Develops .NET backend services and modern frontend applications, shapes domain models and API contracts, and applies event-driven architecture and cloud-native practices. Collaborates with engineers, architects, product managers, security teams, and international business stakeholders. Contributes to architecture, technical standards, code reviews, production issue resolution, and mentoring less-experienced engineers.

Develop software for utility-scale photonic quantum computers, including a compiler that translates high-level circuits into hardware-aware pulse schedules. The role also involves digital-twin development, quantum hardware simulation, architectural strategy, roadmap ownership, and collaboration across software, experimental hardware, and theory teams.

Develop production Rust code for managing, reconfiguring, and adapting cloud resources within a Kubernetes development platform. Collaborate on architecture, infrastructure, and feature design; use AI to improve delivery; and work directly with users to gather requirements and debug complex distributed environments. The role requires strong systems thinking, cloud-native infrastructure knowledge, and effective async collaboration in a remote-first startup.

Develop computational software and physics-based models for feature-scale semiconductor process simulation, including plasma etch, deposition, particle transport, surface chemistry, geometry evolution, and multiphysics phenomena. Optimize simulations for CPUs and GPUs, validate models against experimental data, collaborate with physicists and process engineers, and contribute to architecture, testing, publications, patents, and emerging machine-learning-driven digital twin technologies.

Develop efficient C++ software for brain-computer interface and wearable sensing products. Integrate sensor data acquisition and machine learning inference with real-time performance across wearable hardware and cloud backends. Build performance and algorithm-quality analysis tools, write tested code, and collaborate with embedded systems, hardware, software, and ML teams on system integration and technical tradeoffs.

Leads architecture, development, optimization, testing, and delivery of modern C++ 3D software for clinical dental applications. Owns rendering, geometry, APIs, CI/CD, and cross-language integrations while applying AI-assisted development practices. Investigates complex defects, mentors engineers, leads technical discussions, collaborates across product and manufacturing teams, and ensures compliance with medical device software quality processes.

Build and scale Nuitee’s flight infrastructure from a production product into reliable API-first platform services. Responsibilities include API design, caching volatile flight offers, modeling booking data, supporting booking changes, cancellations and refunds, integrating NDC and legacy GDS flows, and improving performance and reliability. This hands-on individual contributor role requires deep backend and API expertise, flight-domain knowledge, Python experience, and ownership in a small team.

Build and improve full-stack web application features for investment bank trading workflows. Responsibilities include developing backend logic and frontend UI, designing APIs and components, translating user needs into maintainable code, writing tests, participating in code reviews, fixing production bugs, and learning software development, DevOps, and product iteration practices in a startup environment.

Build and scale the backend infrastructure powering Goodweek’s AI platform. Responsibilities include AI orchestration, LLM integration, RAG pipelines, data ingestion and export, context and token optimization, scalable APIs, security, observability, deployment automation, and testing. The role also contributes to architecture decisions, technical documentation, and engineering practices. Candidates need 5+ years with Node.js and TypeScript, backend architecture expertise, AI/ML integration experience, AWS, databases, authentication, CI/CD, and strong technical communication.

Build and maintain ERP business management features across backend services, APIs, databases, and user interfaces. Develop reliable software, implement database models and schema changes, investigate issues, write tests, monitor releases, conduct code reviews, and communicate risks. The role requires professional software development experience and offers opportunities to grow into larger engineering responsibilities while working with technologies including Python, Django, React, PostgreSQL, AWS, and Kubernetes.

Build, test, deploy, and maintain scalable web and mobile applications. Own features from concept through launch while collaborating with Product, Design, Data Science, and engineering teams. Apply automated testing, strong code quality practices, relational database and schema design expertise, analytical problem-solving, and user-focused design. Work within agile methodologies and contribute to continuous deployment, production monitoring, knowledge sharing, and ongoing engineering improvement.