Frontend Code Evaluation AI Trainer
Temporary
Mercor
JobHub by NeonLabs, in partnership with Mercor, is seeking experienced frontend and full-stack software developers across eligible global regions to support leading AI labs in training frontier models on frontend code evaluation. This role focuses on leveraging your web development expertise to evaluate and grade AI-generated frontend code against real-world reference web pages.
Responsibilities include rendering reference web pages and candidate replications at a 1920x1080 viewport, diffing visual fidelity across the box model, typography, color, borders, asset handling, z-order and overflow, reading model source code to grade construction quality, testing responsiveness, and writing evidence-cited justifications for every preference. Ideal candidates have 3-8 years of professional web development experience, fluency across web eras (hand-written HTML/CSS, semantic markup, flexbox, grid, and legacy float/table layouts), DevTools as muscle memory, and at least one completed Mercor engagement. Fully remote independent contractor role with weekly payouts via Stripe or Wise. Task-based work with units taking roughly 2-3 hours. Net-new experts are not onboarded to this project.
Vacancy posted 2 days ago
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