Top Software Engineer Jobs in Paris

Develop embedded firmware and low-level software for handheld UAV ground control systems. Responsibilities include integrating displays, input devices, wireless modules, and battery systems; implementing radio interfaces; optimizing responsiveness, power, and thermal performance; collaborating on hardware integration; conducting field validation and debugging; and contributing to scalable firmware architecture.

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

Join Doctolib's Clinical DOPE team to design and implement fullstack features for prescription lifecycle, collaborate with product and design, ensure performance, security, and testability, integrate external drug databases, and improve medication alerting across France and Germany.

Design, build, and improve distributed clearing and securities-finance systems supporting brokerage products. Own projects from ideation through deployment, develop reliable APIs and integrations, refine existing infrastructure, and participate in on-call operations. The role requires strong systems fundamentals, attention to detail, financial-markets interest, and ownership of production systems handling customers’ money.

The Software Engineer intern will code according to project requirements, optimize game engine subsystems, document technical aspects, and report progress while collaborating with team leads.

As a Software Engineer at Konvu, you'll design and build systems for vulnerability management, iterating quickly based on user feedback while adhering to strong engineering fundamentals.

The Senior Software Engineer designs and develops software solutions in Golang, ensuring code quality and performance while collaborating with teams and mentoring others.

Join our AI Operations team as a Software Engineer, developing AI-powered features and tools, optimizing services, and shaping internal standards.

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.

Staff Software Engineer responsible for architecting and developing scalable web applications and APIs using Elixir, React, and PostgreSQL. The role involves solving ambiguous technical and business problems, ensuring system reliability and performance, collaborating cross-functionally, presenting solutions to leadership, writing tested code, participating in code reviews, mentoring engineers, and removing technical roadblocks.

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.

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

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.

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 and operate customer-facing networking APIs, Python orchestration control planes, and automation that configures routers across global points of presence. Build resource allocation, job queues, retries, rollback, reconciliation, BGP, WireGuard, GRE, NAT, firewall, DNS, cloud interconnect, and Envoy xDS integrations. Own production monitoring, incident response, billing synchronization, API compatibility, and network configuration drift detection across application and infrastructure layers.

Reviews software requirements, design documentation, test procedures, performance evidence, complaints, and post-market information for AI-enabled healthcare software. Partners with engineering, regulatory, and medical safety teams to apply risk management, design controls, change control, and corrective actions. Supports cardiac monitoring products, data algorithms, and AI cloud-platform initiatives while helping ensure patient safety and compliance in a regulated medical-device environment.

Lead the architecture and evolution of scalable ETL and data-processing systems for customer product catalogs. Design reliable distributed systems, improve throughput and latency, strengthen fault tolerance and observability, and guide technical direction across teams. Mentor senior engineers, conduct architecture reviews, lead cross-functional initiatives, influence hiring and onboarding, and help shape the engineering organization’s long-term technical vision.

As a Software Engineer, you'll develop software for Ceph and distributed storage, collaborating with a global team to enhance cloud solutions.

Join the team to design and develop backend and frontend features using Django/Python and React. Produce production-quality code, implement new features, work with PostgreSQL, DynamoDB, Redis, Kubernetes and AWS, and follow agile weekly releases. On-site in Paris with initial training in Barcelona.

Canonical is hiring a Software Engineer to develop features for Kubernetes, focusing on operators and integrations while collaborating in a distributed team.

The Software Engineer will design and develop software architectures, solve complex challenges, lead technical directions, and collaborate with different teams to optimize efficiency and impact.