Top Software Engineer Jobs in Paris

Embed with strategic customers to design and deliver end-to-end technical solutions. Collaborate with customer engineers and executives, build integrations, own execution, and solve complex problems using code and software architecture.

The role involves developing proprietary trading software, collaborating with traders and engineers to create high-performance systems for competitive advantage.

The Frontend Developer will design and implement the web frontend for the SaaS platform Construct, collaborating with various teams and enhancing the user experience while adhering to Agile principles.

The Senior Software Engineer will design and maintain a Web and Mobile Design System using React and React Native, drive convergence between platforms, ensure accessibility, mentor team members, and improve developer experience through tooling and automation.

Lead verification and validation of embedded, front-end, and back-end clinical software. Plan, write, and execute tests, maintain test environments, ensure traceability to requirements, support design controls, risk management, and regulatory submissions, and improve testing processes and automation.

Build and operate an internal AI-driven developer platform that supplies LLMs with the right code, docs, and context; automate code changes and PR proposals; integrate GitHub, CI/CD, observability and internal systems; evaluate generated code and run feedback loops to ensure secure, reliable, production-ready developer tooling.

Build and maintain backend services, APIs, automation tools, dashboards, and lightweight web apps to support quantitative researchers. Deploy and operate internal applications using cloud, containers, and CI/CD; collaborate with researchers to simplify workflows, troubleshoot systems, and improve documentation and onboarding.

The Software Engineer will develop backend systems using Rust, manage multimodal data, and improve data infrastructure with a focus on performance and design ownership.

Canonical seeks open-source enthusiasts to optimize Ubuntu for new silicon technologies, collaborating with teams and customers to enhance software quality and performance across various platforms.

Design and develop services for automating work with a large server fleet while engaging in DevOps processes.

Design and develop services for monitoring servers, improve metrics pipelines, automate maintenance workflows, and investigate incidents to ensure infrastructure reliability.

Build and operate production custody systems: signing service, key management, chain integrations, and transaction pipelines. Own end-to-end subsystems, integrate new chains, collaborate with cryptography on threshold signing and key recovery, write post-mortems, and produce clear async design docs and PRs.

Develop and enhance MetaMask social and multi-chain experiences across Portfolio, browser extension, and mobile platforms. Collaborate across teams on complex projects, mentor engineers, and build scalable full-stack applications using React, React Native, modern JavaScript, blockchain technologies, APIs, testing, and continuous integration. Ensure cross-platform compatibility and apply web security best practices.

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.

Build, design, and ship MCP servers for customers end-to-end. Translate company vision and customer feedback into production features. Perform design, coding, QA, and customer support independently while following MCP best practices. Work closely with customers to deliver reliable, maintainable agent-ready infrastructure.

Work directly with founders to build and iterate the first versions of an MCP hosting platform. Implement features, deploy and monitor MCP servers at scale, and help ship production-ready infrastructure and web tooling for AI-native agent workflows in a fast-paced startup environment.

Join the frontend team to build and improve HarfangLab's cybersecurity platform. Integrate new features, ensure scalable readable code, drive quality improvements, propose technical enhancements, and collaborate with UX, backend, agent, AI, and DevOps teams using an agile process (TypeScript, Vue 3, Sass).

As a Growth Software Engineer, you will scale user and business growth through experimentation, data-driven development, and cross-functional collaboration, particularly in user engagement and retention.

The AI Software Engineer will develop and improve Joko's AI shopping assistant, focusing on architecture, evaluation, data management, and personalized user experiences, while collaborating with product teams.

Design, develop, and maintain high-quality web applications using CodeIgniter and PHP. Collaborate with cross-functional teams to define and ship features, ensure application performance and quality, identify and fix bugs, and maintain code quality and automation.

Designs and executes manual and automated tests for cloud-based and desktop software products. Builds test automation, validates backend systems and data using SQL and NoSQL databases, and partners with developers, product teams, DevOps, and QA professionals. Maintains test documentation, identifies risks, supports software reliability, and contributes to continuous improvement of QA processes and tools.

Design, develop, and optimize highly available, scalable microservices for a real-time, high-throughput gaming platform. Work on event-driven systems, APIs, databases, testing, deployments in AWS, performance monitoring, and cross-team technical collaboration.

The role involves architecting 3D object detection models, managing data pipelines, developing datasets for training, and mentoring junior engineers.

The Senior Software Engineer will design and build full-stack applications, contribute to business growth, support teammates, and ensure technical excellence using TypeScript and Node.js.

Lead architecture and platform design for a quantum-computing software stack: design services, APIs, storage, data ingestion, and orchestration; enable hardware/software interaction loops; partner with researchers and data engineers; drive long-term roadmap and mentor engineering teams.