Frontend Developer Jobs in Île-de-France, France

OCTO Technology, a Paris-based IT consulting firm founded in 1998, is seeking a final-year BAC+5 intern to research and prototype AI-agent-assisted migration of a legacy frontend application. Day-to-day, you will study the state of the art of agentic tools, benchmark 2–3 tools on a simple migration case, build a deeper PoC on a real project comparing AS-IS rewrite vs.

Air Apps is a family-founded company building the world's first AI-powered Personal & Entrepreneurial Resource Planner (PRP), with offices in Lisbon and San Francisco. As a Front-End Web Developer, you will craft seamless, high-performance web experiences by building and optimizing user interfaces with modern web technologies, collaborating closely with designers, product managers, and back-end developers.

Au sein de votre équipe #OneTeam Rejoindre l'équipe dédiée aux plateformes web à forte visibilité et à forte exigence de qualité de service. Porter l'ownership technique des applications frontend sur l'ensemble de leur cycle de vie (conception, développement, mise en production, supervision et amélioration continue).

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.

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.

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.

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.

You join the Product & Engineering – SW Production team at Safran.AI, a subsidiary of Safran Electronics & Defense, to build a Frontend team from scratch. As Engineering Manager Frontend, you manage frontend developers, define and implement best practices for performance, robustness, and scalability, and structure the frontend technical architecture with architects, SREs, backend teams, and your team.

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 at Sourcemap builds scalable, modular systems using Node.js, TypeScript, and frontend frameworks. Leads architectural design, event‑driven patterns, and domain modeling across backend services.

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.

We’re looking for a mobile frontend engineer who treats the app as a craft, not a checklist. You care about the half-pixel, the spring curve on a transition, the way a screen feels in the hand, and you can build it.

Sorare is seeking a Senior Frontend Engineer to join the team. We craft officially licensed digital sport cards that connect hundreds of thousands of fans to their favorite athletes every week, and we're growing the team to reach the millions to come.

The team: Our Dashboard team is currently composed of a mixture Fullstack, Backend & Frontend engineers, and is looking for a Frontend-strong engineer to help us design and develop our current product. Some of our best engineers started specialized and grew into full-stack over time — if that's a path you want, the team supports it, but there's no expectation to do so.

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Soda is building the first Data & AI performance monitoring platform to help Fortune 500 companies solve data quality bottlenecks. As a Senior Full-Stack Engineer, you will lead frontend development for complex, data-dense UIs while owning backend API implementations in Java.