Overview
We’re looking for a competitive, high-performance Front-End Engineer with a strong computer science foundation and 2–3 years of professional experience in React, TypeScript, and Node.js. You should be comfortable shipping production-grade interfaces, understanding the full stack end-to-end, and have the drive and discipline of an athlete—goal-oriented, self-motivated, and relentless about improving.
This is a freelance mission, not a salaried position.
The mission starts at a part-time volume. For the right person, scope can grow to broader responsibilities across the stack.
Key responsibilities
Build, test, and ship performant React front-ends using TypeScript and modern frameworks (Next.js, Vite, etc.)
Collaborate with designers and backend engineers to deliver elegant, reliable, and scalable UI/UX.
Maintain clean, maintainable codebases with high test coverage (Jest, React Testing Library, Playwright).
Continuously optimize app performance, accessibility (a11y/WCAG), and Core Web Vitals.
Take part in code reviews and architecture discussions.
Contribute to internal tooling, design systems, and component libraries.
Gradually take ownership of full-stack features in Node.js (API design, data modeling, integration).
Qualifications
Bachelor’s degree in Computer Science, Software Engineering, or equivalent technical field.
2–3 years of hands-on front-end development experience in a professional environment.
Expert in React and TypeScript, solid experience with Node.js and Next.js.
Familiarity with testing frameworks (Jest, Cypress, Playwright) and tooling (Vite, Webpack, ESLint, Prettier).
Knowledge of UI performance optimization, accessibility, and responsive design best practices.
Strong CS fundamentals (data structures, algorithms, API design).
Bonus: experience with GraphQL, tRPC, Prisma, or Docker.
Bonus: background in competitive sports, martial arts, or other performance-driven pursuits.
What we offer
A high-impact mission in a fast-moving, technical startup environment.
Close collaboration with senior engineers and exposure to full-stack product architecture.
Flexible schedule with work done on-site (office in Paris).
Culture built around discipline, excellence, and personal growth—we move fast and expect the best.
