Frontend Developer Jobs in Île-de-France, France

NEXTON seeks a Senior Frontend Developer to join a client's media team in Paris, designing high-performance web interfaces using React and Next.js. The role focuses on optimizing Core Web Vitals, ensuring code quality through testing, and collaborating within an Agile environment. This full-time position is based on-site in Paris.

Security & IT – IT team builds a highly technical SaaS platform that simplifies and automates complex infrastructure workflows. As a Frontend Engineer you will design, develop and maintain modern frontend features using React, TypeScript and GraphQL, collaborating with product managers, designers and backend engineers to deliver responsive, high‑quality user experiences.

The Frontend Architect leads the design and implementation of reusable, high‑performance web components for internal Factory applications. With over a decade of experience, the role sets technical standards, governs the front‑end stack, and ensures scalability and performance across all solutions.

Software Engineer – Frontend at Helsing: a defence AI company focused on protecting democracies. Join a European team of engineers, AI specialists, and product managers to build reusable frontend foundations, enhance usability, and deliver high‑performance user interfaces across multiple products.

Frontend Engineering team building a modern SaaS platform for mission-critical business operations. The Senior Frontend Engineer will design, develop, and deliver responsive, pixel‑perfect user interfaces using React, TypeScript, and Material UI, own features from design handoff through deployment, and mentor peers while leveraging AI‑assisted development tools.

HASH Engineering team builds an open-source platform that integrates structured and unstructured data into knowledge graphs for simulation, optimization, and automation. As a Senior Frontend Engineer you will design, build, and ship React/TypeScript components for complex, AI‑native interfaces, set architecture standards, and mentor peers.

Senior Frontend Software Engineer at Pigment builds production-grade UIs with React and TypeScript, optimizes performance, handles large datasets, collaborates on API design, maintains internal design system, implements AI-driven features, creates real-time data visualizations, balances feature delivery with maintenance, and proactively resolves issues to ensure continuous delivery.

C2 Core team at Harmattan AI builds the Human-Machine Interface for a tactical Command and Control system, delivering real-time battlefield visualizations for operators. The Frontend Engineer creates interactive maps, low‑latency video grids, and mission planning tools while ensuring 60fps performance and robust state management.

Gramian Consultancy is hiring a Senior Frontend Engineer for a Big4 Consultancy client working on AI-driven transformation, automation, advanced analytics, and financial crime prevention for leading financial institutions. You will build responsive, high-performance web applications using modern frontend frameworks, integrating real-time APIs and WebSockets, managing client-side state, and applying WCAG accessibility standards across complex enterprise applications.

#OneTeam Website team at OVHcloud builds and maintains web platforms, e‑commerce sites and the OVHcloud CMS. The Technical Leader drives frontend architecture, ensures performance, stability and observability while mentoring a team of developers. Role is based in Paris and Roubaix with a hybrid work model, combining onsite collaboration and remote days.

Frontend team at Nica Recruiting builds user‑facing web applications that power customer interactions. The engineer will develop, test, and maintain responsive UI components using modern JavaScript frameworks, collaborate with designers and backend engineers, and ensure performance and accessibility standards.

Lead to Order unit at Eutelsat, driving the digital transformation of satellite connectivity services. The Head of FrontEnd Channels leads and coaches UI/UX teams to deliver high‑quality customer portals and front‑end experiences, collaborating with product managers, architects, and stakeholders across global hubs.

Pass Team at Proton builds a secure, open-source password manager integrated across Proton's privacy-first ecosystem. The Senior Frontend Engineer develops new features for browser extensions, web and desktop apps, collaborates with backend, product, design and QA, conducts code reviews, and implements testing strategies.

Dust seeks an experienced frontend engineer to craft engaging, high‑performance user interfaces in React and TypeScript while also contributing to backend REST APIs with Next.js. The role blends design collaboration, accessibility, and performance optimization with a full‑stack perspective. Candidates will lead frontend projects, maintain a design system, and ensure code quality across the codebase.

Lumo AI team at Proton builds a privacy‑first AI assistant that keeps user conversations confidential. As a Frontend Engineer you will turn UI mockups into production‑ready React components, integrate them with backend services using TypeScript, and optimize performance for fast, reliable user experiences.

Ecom Pricing & Promotions team at Decathlon Digital builds the global e‑commerce pricing and promotion platform to drive commercial dynamism and shopper experience. As a Senior Frontend Engineer you will design and evolve high‑performance, scalable web applications, co‑design architecture, enforce code quality through reviews and automated testing, and optimize CI/CD pipelines while mentoring junior developers.

Our partner company seeks a Senior Frontend Engineer to build and evolve its shared UI foundation, powering multiple products with a modern design system. You will own component libraries, tokens, and tooling while ensuring AI-friendly interfaces and high accessibility standards.

Web Experience team of Decathlon Second Life builds circular commerce platforms. The Senior Software Engineer Frontend designs and implements seamless web applications using React and Svelte, defines technical roadmaps, and ensures best‑practice, security and scalability across micro‑service APIs.

Senior Software Engineer (Frontend) at Doctolib, leading Design System & Mobile team. Build scalable Web & mobile Design System with React & React Native, unify UX across platforms, mentor team, champion accessibility, leverage AI for DevX, support product teams, improve docs, CI workflows.