Top Software Engineer Jobs in France

Build and operate CI/CD pipelines, cloud and on-prem infrastructure, and containerized platforms. Develop automation, tooling, and test software in Python/Java, maintain PostgreSQL, support semiconductor test engineering, improve monitoring/security/developer experience, and collaborate across engineering teams to troubleshoot and optimize workflows.

Design, implement and operate the Core platform layer: identity, provisioning, RBAC, APIs, notifications, billing, and observability. Migrate customers to a platform architecture, scale GitHub check runs, redesign plan architecture, decompose a large Django monolith, and improve onboarding and integration health checks. Own end-to-end delivery, mentor peers, and drive quality standards.

Lead technical vision and architecture, mentor engineers, drive cross-team initiatives, and design scalable, high-performance systems. Collaborate with product and design, perform hands-on development and code reviews, integrate ML and security features, ensure code quality, and address large-scale scanning, deployment, and reliability challenges in cloud/containerized environments.

Join the Non Human Identity Governance team to build NHI detection and remediation features. Write production backend code daily, own feature delivery, review peers' code, mentor junior engineers, and participate in cross-team design. Work on scalable distributed systems, task orchestration, and big data flows, integrating with ML and deploying on Kubernetes and cloud.

Build and maintain Discover features end-to-end, focusing on React/Redux frontend expertise and full-stack development with Node.js. Architect databases, collaborate with product/design/QA, write tests and clean code, drive AI-led improvements, optimize performance, and reduce architecture complexity.

Design, build, and maintain scalable back-end systems (PHP/Laravel/MySQL) and front-end features (React/TypeScript). Develop APIs, write unit tests, manage dependencies, contribute to architecture and code reviews, and apply AI-assisted development tooling to accelerate delivery while ensuring code quality and maintainability.

Develop, integrate and deploy PasqOS on QPUs: implement features and drivers, troubleshoot QPU systems, integrate with cloud and software ecosystem, optimize performance, and support deployment and testing.

Develop, test, and integrate embedded software for satellite propulsion electronic subsystems. Build test and validation tools, collaborate with hardware teams, implement radiation-mitigation strategies, document designs, and execute verification/validation within aerospace quality standards and Agile development cycles.

Design and build the XTM One core platform as a Senior Full Stack Engineer using TypeScript and Python. Define architecture for AI integrations, implement visualization flows, logging, and agent configuration, prototype rapidly, engage with the open-source community, and help create development processes and team culture.

Improve reliability, observability, and scalability of Enode's connectivity layer. Build and maintain API integrations with OEMs and energy partners, reduce incidents, enhance monitoring and alerting, drive complex projects to release, uphold code quality and testing, collaborate with product, and mentor teammates while applying AI tooling strategically.

Design, implement, test, deploy, and maintain cloud-native full‑stack applications. Collaborate cross-functionally, follow software engineering best practices, use event-driven patterns, leverage AWS, participate in code reviews, troubleshoot issues, and improve CI/CD workflows.

Lead design and development of scalable, user-friendly iOS applications for clinical and customer use. Define technical architecture, implement and optimize features, build modular frameworks, ensure high quality via automated tests, apply Apple design and accessibility standards, and collaborate with cross-functional teams in agile processes.

As a Database Engineer, you will design database architecture, manage system interfaces, improve continuous integration, and update database features for compliance with aerospace regulations.

Design, implement, test, and maintain cloud-first web applications. Build secure, maintainable code using event-driven architecture and cloud services (AWS/Azure). Collaborate with cross-functional teams, mentor junior engineers, and support CI/CD and PWA development.

Senior backend engineer role to design, implement, and maintain scalable Ruby on Rails features. Lead architecture, participate across the SDLC, ensure reliability/security of customer-facing services, drive engineering best practices (TDD, code reviews, pair programming), and contribute to technical roadmaps in an Agile, high-growth environment.

Design, build, and harden Chromium-based browser components in C++ to power Menlo's AI/agent initiatives; apply networking and HTTP security expertise; integrate AI agents and MCP servers; build tooling in Python or Rust; deploy and operate cloud infrastructure (AWS/GCP, Kubernetes, Terraform); debug and optimize performance-critical systems; collaborate cross-functionally.

Design, build, and operate Threat Protection and ShadowAI services: scalable distributed systems and APIs that detect and control risky web and generative AI usage. Own features end-to-end, maintain availability and latency SLOs, write tests, perform code reviews, use AI-assisted tools, and collaborate with cross-functional teams to improve detection accuracy and production reliability.

Build and own backend integrations connecting Voxie's SMS platform to CRMs, POS, marketing tools, and messaging providers. Design scalable, testable serverless systems on AWS, handle high-throughput messaging, implement reliable API/webhook/SFTP/batch pipelines, and collaborate with sales, partners, and customers to scope and deliver integrations.

Develop and validate embedded firmware for a wearable neural interface: sensor acquisition, timing, buffering, communication, hardware bring-up, and optimization for latency, power, reliability, and signal quality. Build tests and tools, stream neural data to the platform, and coordinate with electrical engineering, ML, suppliers, and manufacturing to move prototypes to production.

Design and develop ranking and understanding features for search relevance. Build and maintain production pipelines and API services handling large datasets and high traffic. Collaborate with frontend and ML specialists, ensure code quality, automated testing, and reliability. Operate on major cloud providers and apply data-driven decisions to improve search relevance and user experience.

Own embedded software for compute modules from bare board to secure, booting Linux. Maintain BSPs, boot chain, kernel drivers, device trees, and SDKs; perform board bring-up, hardware validation, debugging, verification, documentation, and cross-functional integration. Mentor junior engineers as needed.

Develop cloud-native production systems that process large data volumes. Engage in backend development with Rust and frontend with Angular. Collaborate on product development.

As a Senior Software Engineer, you'll design and build scalable market data systems, improve API architecture, and enhance overall system performance, contributing to Alpaca's infrastructure for trading financial assets.

Build and maintain core post-trade clearing systems and securities-finance infrastructure. Own projects end-to-end, design reliable distributed services and RESTful APIs, integrate new clearing partners, participate in on-call rotation, and improve systems to enable new product offerings.

Lead the development of software solutions for a logistics platform, overseeing technical strategy, mentoring teams, and ensuring high-quality software delivery.