Type
Remote
Location
Remote
Experience
Mid (2+ yrs)
Posted
3 months ago
Marked closed on our board — original listing may still open.
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Quick Take
Remote contract Frontend Engineer role at Mercor evaluating frontier AI coding agents. Requires 2+ years building React, TypeScript, and JavaScript web apps, plus regular hands-on use of AI coding tools like Cursor, Claude Code, or Codex. Sprint-based independent contractor work on your own schedule, applied directly through Mercor's site.
Role Overview
🚨 Spots are limited and filling on a first-come, first-served basis. Please note: Mercor cannot support H1-B or STEM OPT candidates for this engagement.
🏢 About Mercor
Mercor is an AI-powered talent marketplace that pairs leading AI research labs and enterprises with vetted human experts to train and evaluate frontier models. Contributors work on structured, paid projects that directly shape the next generation of AI systems.
🎯 The Role
Mercor is partnering with a leading AI research lab on a Frontier Code Agents project. As a contributor, you'll evaluate and help improve frontier AI coding models through structured technical assessments grounded in realistic frontend engineering workflows. The focus is on model evaluation and judgment rather than shipping traditional product code.
🛠️ Tech Stack
- React + TypeScript + JavaScript
- Frontier AI coding agents: Cursor, Claude Code, Codex, Windsurf, Gemini CLI
- Modern web application architecture, accessibility, and performance tooling
💼 What You'll Do
- Use frontier AI coding agents to complete and evaluate complex engineering tasks
- Review model-generated frontend code for correctness, quality, maintainability, accessibility, and performance
- Identify bugs, edge cases, and failure modes in model outputs
- Compare outputs from multiple frontier models and weigh their strengths and weaknesses
- Apply professional engineering judgment to realistic frontend scenarios
✅ What You'll Need
- 2+ years of professional frontend engineering experience
- Hands-on experience building modern web apps with React, TypeScript, or JavaScript
- Regular use of AI coding agents (Cursor, Claude Code, Codex, Windsurf, Gemini CLI, or similar)
- The ability to assess model-generated UI implementations, architecture, and performance optimizations
🌟 Nice to Have
- Experience working on large-scale consumer or enterprise applications
💰 Engagement & Pay
- Headline rate of $85/hour, with task-based pay of $400 per accepted task (typical tasks run ~2–3 hours after ramp-up)
- Sprint-based project running in 12–24 hour stretches based on client need
- Fully remote independent contractor engagement, completed on your own schedule
- Weekly payments via Stripe or Wise
Why This Role?
This is a curated frontend role from Mercor. Every listing on OnlyFrontendJobs is hand-picked for frontend relevance and quality. The tech stack leans on React, TypeScript, JavaScript.
Frontend Engineer (Coding Agent Experience) at Mercor — FAQ
Quick answers about this role, the stack, and how to apply.