Senior Frontend Engineer (Contractor)

📋 Description Design, build, and deliver responsive UIs using React, TypeScript, Material UI Own features from design to deployment and improvement Build complex forms and ensure strong UX across devices Write automated tests (unit/integration/e2e) for reliability Optimize performance, accessibility, and Core Web Vitals Collaborate with product, design, and backend teams 🎯 Requirements Minimum 5 years with production React apps Expert in TypeScript, React, Material UI v5+, Redux Toolkit, RTK Query Advanced CSS (Flexbox, Grid, responsive, mobile-first) Experience with React Hook Form, Jest, RTL, Cypress/Playwright or similar Perf optimization: lazy loading, code-splitting, profiling Pixel-perfect from Figma, Agile, Git workflows, Vite/Webpack 🎁 Benefits Fully remote contractor, based in Europe Ownership of frontend features end-to-end Work on a modern SaaS platform for mission-critical ops Collaborative cross-team environment with AI-assisted tooling Influence frontend architecture and design systems Flexible remote work within distributed international team