Top Software Engineer Jobs in France

As a Software Engineer, you will design and implement features, collaborate with users, and lead technical projects while working with modern technologies in a fast-paced environment.

As a frontend engineer at Dust, you'll create engaging user interfaces, collaborate with designers, and work on backend tasks using TypeScript and Next.js. Responsibilities include leading frontend projects, ensuring code quality, and building scalable systems.

The role involves delivering features across the CRM platform for distributors, using AI tools, handling fullstack development tasks, and collaborating closely with teams and customers.

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

Design, develop, and optimize highly scalable backend microservices for a real-time poker platform. Build distributed event-driven systems, APIs, and data models; implement testing; deploy and maintain AWS services; monitor and optimize performance; and collaborate with infrastructure, frontend, data, security, and product teams.

Build and ship end-to-end features for Prevail, an operational planning platform used in live defense deployments. Responsibilities include full-stack or backend development with Python, FastAPI, and TypeScript; geospatial data work using tile servers and PostGIS; resilient ML and LLM workflow orchestration with LangGraph and LangChain; and on-premise appliance deployment. The role involves working independently amid ambiguity, collaborating with leadership, engaging directly with users, and traveling to client sites when deployments require it.

Develop, test, integrate, and support robotic controls software for automated lift trucks in an embedded environment. Responsibilities include vehicle control communication, simulation, requirements development, software and electrical architecture, code and design reviews, supplier leadership, manufacturing support, and mentoring entry-level engineers. The role requires C/C++ development, robotics sensors and SLAM experience, embedded control systems, network communications, and MATLAB/Simulink/Stateflow expertise. Occasional travel may be required.

As a Software Engineer, you will lead technical projects, build reliable AI systems, and collaborate cross-functionally to resolve user pain points.

Design and build lab automation and HIL tooling: instrument integration, embedded fixture firmware, data acquisition and analysis, CI-integrated rigs, protocol implementation, bring-up/debug support, and cross-functional documentation to accelerate hardware development cycles.

Build and maintain high-performance visualization tools, dashboards, and 3D scene viewers for telemetry, sensor, simulation, and flight data. Design architectures and APIs, integrate with CI/CD and data pipelines, optimize rendering performance, collaborate with GNC/ML/Embedded teams, write tests and docs, and mentor junior developers.

Develop and maintain front-end and back-end components of Raidium's product, integrating machine learning models and ensuring system performance and quality.

Develop and deploy high-performance APIs, build frontend applications, collaborate with teams, and contribute to strategic decisions at Zefir.

Lead full-stack software development across frontend and backend systems, owning complex technical problems from design through production deployment. Drive architecture decisions, planning, code reviews, automated testing, reliability, scalability, and engineering-practice improvements. Use AI coding tools to accelerate delivery and automation while collaborating with Product, Design, and distributed EMEA and US teams.

Design and scale mission-critical market data services for stocks, options, crypto, and foreign exchange. Responsibilities include architecting backend systems and APIs, maintaining software quality and test coverage, participating in code reviews, and troubleshooting incidents and bugs. The role uses Go and Python with REST, gRPC, WebSockets, SSE, Docker, Kubernetes, Google Cloud, BigTable, Prometheus, Grafana, and ELK.

Develop and maintain secure, stable, high-performance backend systems for banking connectivity and payment automation. Own architecture and technical direction for complex distributed systems, design secure APIs, improve technical roadmaps, resolve critical production issues, and mentor engineers. Collaborate with product and DevOps teams in a fast-paced SaaS environment, applying expertise in Golang, SQL, databases, cloud infrastructure, CI, Kubernetes, and messaging systems.

Lead development of tooling and platforms to improve on-call, incident response, and postmortem processes. Mentor engineers, run cross-functional reliability initiatives, analyze incidents to drive systemic improvements, and embed best practices for operational excellence.

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.

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.

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.

Design and build durable, distributed data-streaming infrastructure that decouples process data from Camunda’s live execution engine. Develop customer-facing integrations such as Kafka connectivity, support analytics data consumption at scale, and make architecture decisions around consistency, durability, and storage. Participate in production support and on-call rotations while collaborating with Product, Data Layer, Distributed Systems, QA, SRE, and Support teams. Lead ambiguous, cross-functional engineering initiatives from design through delivery.

Build and maintain Camunda 8 backend data-layer services spanning relational databases and Elasticsearch/OpenSearch. Design scalable storage, query, retention, and streaming systems; improve performance, indexing, and production tooling. Lead engineering initiatives from solution design through delivery, collaborate across teams, provide L3 support, and participate in on-call rotations. Investigate production data issues and contribute to schema evolution, workflow automation, and CI improvements.

Develop low-level software, drivers, and hardware abstraction layers for quantum-control electronics, including signal generators, AWGs, digitizers, and FPGA instruments. Define reliable hardware/software interfaces, synchronization mechanisms, and low-latency communication systems. Collaborate with physicists and researchers, guide architecture and technical strategy, lead reviews, and mentor engineers while supporting production-grade quantum experimentation platforms.

Develop and maintain Joybuy backend services for European retail markets, emphasizing high performance, availability, concurrency, security, scalability, and global integration. Mitigate technical risks, implement monitoring and rollback strategies, research and adopt new technologies, and collaborate with product teams across marketing, fulfillment, and supply chain.

Lead architecture and backend development for international core systems, ensuring high availability, concurrency, security, and scalability. Design Java/Spring Boot services, optimize performance, integrate MySQL/Redis/Kafka, manage technical risk, drive productization, mentor engineers, and coordinate with suppliers and product teams. Onsite role in London supporting European operations.

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.