Synegia - Frontend Developer (React / React Native – TypeScript)

Your responsibilities Develop new web and mobile features using React and React Native Design high-performance, smooth, and accessible interfaces with a strong emphasis on UX Collaborate closely with product managers, UX / UI designers, and backend developers Contribute to the structuring and evolution of our cross-platform design system Actively participate in continuous code improvement (quality, performance, accessibility) Manage mobile build and deployment processes (App Store / Play Store) as well as web interfaces Propose functional solutions and challenge specifications when necessary Participate in technical discussions or documentation in English Technical environment : Language : TypeScript Frameworks : React (Web), React Native (Expo or CLI) State Management : React Query, Zustand, Redux Toolkit Design & UI : Figma, internal design system Testing : Jest, React Testing Library, Detox CI / CD : GitHub Actions, EAS, Fastlane Monitoring & Analytics : Firebase, Amplitude, Sentry Candidate profile At least 2 years of experience in frontend development with React or React Native Proficiency in TypeScript and the React ecosystem in a product context Strong sensitivity to UX / UI and a passion for crafting polished interfaces Comfortable working in a multidisciplinary team (design, product, tech) Experience with (or eagerness to learn) mobile deployment processes Curious, autonomous, rigorous, and eager to contribute to all stages of the product lifecycle Able to read and write technical documentation in English; conversational English is a plus Why join us? An ambitious roadmap with impactful, user-focused projects A strong, supportive, and impact-driven product team