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Front‑End Developer – AI Trainer (Fluent in Spanish)

Spain

Are you a front‑end developer fluent in Spanish eager to shape the future of AI? Large‑scale language models are evolving from clever chatbots into powerful engineering copilots. With high‑quality training data, tomorrow’s AI can democratize software education, keep pace with cutting‑edge web standards, and streamline UI development for engineers everywhere. That training data begins with you—we need your expertise to help power the next generation of AI.

We’re looking for front‑end specialists who live and breathe JavaScript & TypeScript, React component architecture, HTML5 semantics, CSS3 / Tailwind styling, responsive‑design principles, Web Accessibility (WCAG/ARIA), Vue or Angular frameworks, state‑management patterns (Redux/Pinia), performance optimization, cross‑browser compatibility, and automated testing with Jest or Playwright. You’ll challenge advanced language models on topics like hooks vs. class components, CSS Grid layouts, SVG manipulation, internationalization for Spanish‑speaking markets, progressive web app caching, code‑splitting strategies, Lighthouse performance scoring, design‑system theming, and CI/CD best practices—documenting every failure mode so we can harden model reasoning.
You will converse with the model on coding scenarios and theoretical front‑end questions, verify functional accuracy and architectural soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

A bachelor’s or master’s in computer science, software engineering, or a closely related field is ideal; open‑source contributions, production React/Vue apps, or hands‑on UX performance audits signal fit. Clear, metacognitive communication—“showing your work”—is essential.

Ready to turn your front‑end expertise into the knowledge base for tomorrow’s AI? Apply today and start teaching the model that will teach the world.

Employment type: Contract
Workplace type: Remote
Seniority level: Mid‑Senior Level

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