Top Software Engineer Jobs in Paris

Integrate and deploy robotics AI software across humanoids, mobile manipulators, and industrial arms. Responsibilities include designing ROS 2 architectures, implementing controllers, containerizing systems with Docker, integrating vendor SDKs, building system-level testing pipelines, debugging hardware/software interfaces, commissioning customer deployments, and improving reliability, observability, and autonomous operation. The role is based in Paris and requires approximately one week of travel per month, primarily within France.

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 motion planning, decision-making, vehicle control, and estimation algorithms for autonomous vehicles. Implement real-time C++ on embedded automotive hardware, build Python and C++ simulation tools, integrate planning with perception, validate software on vehicles, analyze field data, define safety metrics, and improve driving behaviors. The role requires strong software fundamentals, robotics or controls expertise, and experience deploying production-quality systems.

Design and implement scalable software solutions supporting research workflows and data analysis. Lead technical decisions, develop microservices and APIs, establish engineering standards, optimize cloud infrastructure, and promote CI/CD and DevOps practices. Collaborate across teams, mentor junior engineers, contribute to testing and architecture, and help build an innovative engineering culture within Sanofi’s R&D organization.

The Software Engineer will design and maintain backend APIs, oversee API landscape, and collaborate with cross-functional teams to align the architecture with product strategy.

Build and operate backend services across edge devices and cloud systems for video traffic enforcement and ANPR products. Responsibilities include camera and VMS integrations, local storage, event-driven APIs and workers, fleet orchestration, resilient synchronization, deployment, monitoring, incident response, architecture, testing, and production hardening. The role owns significant backend areas, collaborates on technical and legal requirements, and helps establish engineering quality standards.

Design, implement, and operate fault-tolerant distributed systems and foundational platforms at internet scale. Build horizontally scalable, multi-tenant services that ingest, store, analyze, and query billions of events per second. Develop backend systems using Go, Java, Rust, or C++, alongside Kafka, Redis, Cassandra, Elasticsearch, and other open-source technologies. Own production services, optimize durability, availability, latency, performance, and operability, and use AI coding tools effectively.

Build and maintain scalable workflows and ETL pipelines to produce market risk metrics and regulatory reporting. Produce, validate and communicate risk analytics, optimize data pipelines, and develop BI/visualization solutions to support senior management and regulators. Ensure data quality, timeliness and completeness.

Build and maintain Ergodic AI’s AI platform across back-end and front-end systems. The role involves developing with Python web frameworks and JavaScript/TypeScript, integrating with client technology stacks and workflows, applying AI, ML, and LLM concepts, and contributing to DevOps, cloud deployment, testing, and infrastructure practices. As an early-stage hire, the engineer will help shape the product and solve complex data and AI challenges.

Develop and maintain secure, high-performance iOS SDKs and applications for digital payments, wallets, and authentication. Responsibilities include architecture, Swift development, testing, CI/CD, production support, performance optimization, certification activities, troubleshooting, code reviews, and collaboration with cross-functional engineering teams. The role also includes mentoring developers and contributing to technical planning and architectural decisions.

Build and operate backend services supporting millions of emails. Own features end to end, design reliable distributed systems, scale APIs and databases, manage cloud infrastructure, improve observability and deployments, and participate in on-call rotation. Collaborate with customers and support to improve the product, strengthen engineering quality, and deliver complete experiences across the stack.

Join a team of engineers to work on a complex codebase while utilizing MongoDB, Node.js, and Vue.js. Responsibilities include developing and improving functionalities, collaborating within squads, and onboarding new engineers.

Build and ship end-to-end platform features across backend, dashboard, and internal clinic deployment tooling. Develop the scenario engine and self-serve onboarding product using TypeScript, Node.js, PostgreSQL, and a monorepo architecture. Own features from specification through production, collaborate closely with operations and sales, maintain rigorous testing standards, and eventually own a platform area and support technical hiring.

Build and ship backend features for enterprise Coder deployments, including database migrations, observability, reporting, auditing, security, scalability, and reliability improvements. Investigate production issues, resolve operator problems, document designs, participate in code reviews and RFC discussions, and join on-call rotations. The role requires professional Go development, concurrency knowledge, SQL expertise, debugging ability, and strong communication.

As a Software Engineer for Internal Tools at Prelude, you will design and build internal tools, develop AI workflows for automation, and collaborate with various teams to streamline operations and improve productivity.

Design and develop Marketplace platform features, maintain APIs, build OS image and packaging tools, automate image and container manufacturing, and manage application artifacts. Support external publishers, ensure artifact security through CI/CD and scanning, contribute to architecture, and collaborate with product and engineering teams on innovative technical initiatives.

Develop and maintain scalable, secure back-end systems, APIs, and related components. Contribute to technical design, code reviews, versioning, documentation, testing, performance optimization, and agile development processes. Monitor emerging technologies and collaborate across teams to improve the product roadmap. The role is fully remote within France and requires French and English proficiency.

Develop and own real-time gimbal control and GNC software for custom microcontrollers and embedded Linux platforms. Build diagnostic and PC tooling, analyze telemetry, support calibration and performance investigations, and lead flight-test preparation and field evaluations. Collaborate with software, GNC, mechanical, hardware, and industrialization teams while defining robust software architecture and mentoring junior engineers.

Build and evolve Rerun’s open-source viewer, cross-language SDKs, and integrations with Rerun Hub. Develop high-performance interfaces for large-scale multimodal data, optimize workflows across desktop and web, make full-stack architecture decisions, and collaborate with backend, Hub, design, customers, and the open-source community. The role involves UI development, rendering, data handling, infrastructure, real-time applications, visualization, and performance optimization.

Develop and optimize software solutions for industrial additive manufacturing in an agile team. Responsibilities include designing algorithms, data structures, and software subsystems; debugging complex issues; benchmarking and improving performance, stability, efficiency, and scalability; and contributing to software quality and documentation. The role uses Vue.js, TypeScript, Python, C++, MongoDB, Docker, and automated development tools.

As a Software Engineer, you'll design and develop software solutions, solve technical problems, lead projects, and collaborate with product and operations teams.

Owns field deployment of defense software by integrating platforms with customer systems, developing connectors, configuring and customizing applications, managing on-premises releases, troubleshooting operational issues, and documenting deployments. Works directly with customer technical teams, validates end-to-end data flows, and feeds reusable integration needs back to the core product team. The role requires substantial domestic and international travel and autonomous work in mission-critical environments.

Own backend services, APIs, infrastructure, and frontend dashboards for AI-powered healthcare voice agents. Design reliable, secure, scalable systems serving thousands of medical practices, deliver features from specification through production, improve developer tooling and observability, build modular multi-client architecture, and launch voice agents at scale. The role also contributes to engineering culture, code quality, mentorship, and future team growth while collaborating closely with founders, design, sales, support, and operations.

Maintain, monitor, scale, and modernize internal CRM, ERP, ticketing, and backend services. Develop Python and Go microservices, automate workflows, integrate business tools, and improve system reliability, security, and performance. Collaborate with Sales, Finance, Support, and Operations stakeholders; conduct code reviews, write tests, document architecture, and use Docker, Ansible, GitLab CI, and internal LLM tooling.

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.