Remote React & Next.js Engineer (Hourly Contractor)

About the role

We are looking for a senior React and Next.js engineer to join our expert network on a remote, hourly‑paid basis. You will review AI‑generated code, assess frontend architectures, and create high‑quality reference implementations that help improve AI models used by millions of developers.

Key responsibilities

• Develop detailed prompts and reference answers on React/Next.js topics for AI training.
• Evaluate and rank AI responses for correctness, clarity, accessibility, security and performance.
• Test AI‑generated solutions, identify inaccuracies or unsafe recommendations, and ensure model integrity.
• Analyze rendering behavior, state management, SSR/SSG/ISR, routing, hydration, caching and bundle performance.
• Fact‑check technical information and write clear step‑by‑step explanations.

Required profile

• Bachelor’s degree in Computer Science or equivalent practical experience.
• 4+ years of professional experience building production web applications with React.
• 2+ years of hands‑on experience with Next.js (v13/14+ preferred).
• Strong understanding of web fundamentals, security basics and OAuth flows.
• Excellent written English (C1) and ability to produce technical documentation.

Required skills

• React, Next.js, JavaScript, TypeScript, HTML, CSS.
• Hooks, component patterns, state management, memoization, server‑components, app router, middleware, caching.
• HTTP, XSS, CSRF, OAuth, cookies, sessions.
• Performance optimisation: bundle splitting, image optimisation, Core Web Vitals, profiling.
• Testing: Jest, Vitest, React Testing Library, Playwright, Cypress.
• Linting, CI/CD pipelines.

What we offer

• Fully remote work with flexible hourly rates.
• Access to future AI‑related projects through our expert network.
• Opportunity to influence the quality of cutting‑edge AI models.