Top Software Engineer Jobs in Paris

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.

Develop and optimize a QGroundControl-based Android control station using C++/Qt; integrate physical controls and hardware; port and maintain app across Android versions; manage deployments; collaborate with embedded, electronics, and QA teams for field validation.

Design, develop, and maintain scalable backend applications using TypeScript, Node.js, and NestJS. Collaborate across engineering, product, design, and frontend teams throughout the software development lifecycle. Integrate APIs, troubleshoot and optimize applications, document solutions, apply security best practices, and contribute to architecture and technology decisions. Provide technical guidance to junior developers while delivering clean, tested, and maintainable code.

Develop and maintain software features for transportation revenue-management solutions. Responsibilities include backend and frontend development, application monitoring, infrastructure management, technical-debt reduction, architecture improvement, and collaboration with product experts and data scientists to address customer and business needs.

Own backend development for video traffic enforcement and ANPR products across edge and cloud systems. Build camera integrations, edge services, APIs, event-driven workers, data layers, fleet orchestration, and resilient synchronization. Deploy and monitor systems on GKE, improve testing and reliability, handle production incidents, and contribute to architecture decisions. The role requires close collaboration on evidential integrity, GDPR, auditability, and retention requirements in a small senior team.

Lead the architecture and scaling of Datadog’s Autonomous Ops & Maintenance platform. Build reliable, fault-tolerant, horizontally scalable services for multi-tenant environments; transform technical datasets into structured knowledge; develop AI-driven components for operational workflow analysis; and automate software maintenance in mission-critical systems. Own features end to end, including reliability, observability, and operational quality, while collaborating with users and operating production services.

Build and maintain software for clinical AI medical devices across radiology modalities. Develop features, integrate systems, validate and route requests, assemble results, and support production services. Write and review code, create automated and manual tests, and own features through deployment. Ensure quality, regulatory, cybersecurity, documentation, and risk-analysis compliance while collaborating with product, service, and delivery teams.

Executes software engineering solutions within defined projects, applies established design standards, supports problem solving using QRQC, prepares technical documentation, adopts digital tools, contributes to continuous improvement and innovation, and collaborates with engineers and stakeholders. The role also supports junior engineer development through technical guidance and coaching.

Build and ship end-to-end platform features across backend, dashboard, and internal clinic deployment tooling. Work on a scenario engine and self-service onboarding using TypeScript, Node.js, PostgreSQL, and a monorepo. Own features from specification through production, collaborate closely with operations and sales, maintain rigorous testing practices, and help scale the platform used by medical staff.

Build and scale Vocca’s healthcare AI voice-agent platform. Responsibilities include developing backend services, APIs, frontend dashboards, infrastructure, scheduling and voice integrations, developer tooling, observability, and modular multi-client architecture. The role owns features from specification through deployment and monitoring, improves reliability and security, collaborates with design and business teams, and contributes to engineering culture, mentorship, and future team building.

Build systems that safely test and improve production resilience, including zonal failover automation, fault injection, incident replay, gameday orchestration, and reliability tooling. Design distributed systems such as gRPC services and Kubernetes controllers, implement safeguards for controlled experiments, connect findings to remediation, and mentor engineers while collaborating across teams.

Build mission execution infrastructure for autonomous robots and multi-agent systems. Develop scalable backend services and APIs for mission guidance, orchestration, communication, and real-time execution. Write production-grade C++ and Python, establish testing and CI/CD practices, analyze telemetry and logs, and improve system reliability in field operations. Collaborate with mission planning, simulation, and product teams to integrate, test, and deploy autonomous-system algorithms.

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.

Develop and enhance payment platform services across APIs, payment processing, reconciliation, and core banking systems. Responsibilities include specifying, implementing, testing, monitoring, troubleshooting, reviewing code, owning products through the development lifecycle, resolving production issues, and collaborating with engineering, infrastructure, QA, and product teams. The role also contributes to card payment acquiring and issuing systems and cash management platforms.

Build and operate full-stack systems for an AI-powered offensive security platform. Responsibilities include developing React frontends, TypeScript APIs, Kotlin and Go backend services, deploying on AWS, designing scalable systems, optimizing databases, supporting production, and owning features from concept through deployment. The role involves close collaboration with AI and security researchers in a fast-paced remote startup.

Internship opportunity for a UI Software Engineer at Murex, a global fintech company developing trading, risk management, and processing solutions for capital markets. The role offers exposure to innovative financial technology, collaboration within a global team, and opportunities to learn and contribute to Murex’s platform used by financial institutions worldwide.

Architect, develop, and scale cloud services, dashboards, and data pipelines to support robotics and autonomous vehicle telemetry. Integrate IoT devices with Azure services, build APIs/microservices, implement observability and CI/CD, validate systems in lab and field, and mentor junior engineers.

Build and optimize Pelico’s Java-based ETL backend for large-scale manufacturing data processing. Design scalable distributed services, integrate APIs, improve database and deployment performance, and ensure data integrity, security, and availability. Write clean, testable code; lead unit, integration, and performance testing; troubleshoot issues; collaborate with DevOps and cross-functional teams; and mentor junior engineers. Experience with AI-assisted workflows is expected, while manufacturing-sector experience and mentoring are preferred.

Six-month software engineering internship developing and testing C++ components for Murex’s MX.3 capital markets platform. The intern may work on low-level development, algorithms, distributed systems, observability, OpenTelemetry, programming languages, compilers, static analysis, diagnostics, and software reliability. Responsibilities include analyzing architectures, improving performance and maintainability, collaborating with engineers and architects, and documenting technical solutions.

Six-month software engineering internship developing and testing Java components for Murex’s large-scale financial platform. Responsibilities may include backend services, distributed systems, performance optimization, data processing, monitoring, CI/CD, workflow tools, software architecture, and AI-assisted engineering. Interns analyze existing systems, improve reliability and maintainability, collaborate with experienced engineers, document solutions, and present findings. The role is based in Paris and requires strong Java, object-oriented programming, analytical, communication, and teamwork skills.

Build and maintain developer tools across SDKs, React Email, CLI, MCP, integrations, and supporting backend services. Collaborate on APIs, compatibility, testing, releases, documentation, and shared tooling. Support developers through GitHub issues and pull requests while designing reliable interfaces, error handling, and backward-compatible experiences. The role also involves operating systems with authentication, retries, rate limits, queues, monitoring, and error recovery.

Create and optimize Unity-based playable ads by converting mobile games into interactive experiences. Build customizable templates, integrate analytics, improve scalability and performance, and collaborate with creative and cross-functional teams. The role involves testing new tools, analyzing ad performance, benchmarking competitors, and developing innovative advertising experiences for mobile games and apps.

Builds software solutions for end users as a general full-stack engineer. The role emphasizes collaboration, ownership, accountability, fast-paced execution, adaptability, multitasking, rapid learning, and an ambitious, outcome-driven approach.

Lead backend engineering for a SaaS platform: design architecture, build and maintain production REST APIs and relational databases using Python/Django, implement CI/versioning, and support real-time systems (Redis/WebSockets). Influence technical decisions, ship features quickly, collaborate across teams, and help recruit and lead engineers for energy and built-world applications.

Design, build, test, monitor, and troubleshoot scalable payment and core banking services. Lead architecture and code reviews, guide technical standards, own products throughout the development lifecycle, and collaborate with engineering, QA, infrastructure, and product teams. The role focuses on payment APIs, processing, reconciliation, card acquiring and issuing, cash management, microservices, and resilient payment solutions.