Frontend Engineering Evaluator (contract)
Frontend EngineeringRemote (US, Canada, and UK only)Contract2–3 yrs$90–$140 / hour
Overview
MarketHire is seeking a contract Frontend Engineering Evaluator to assess how effectively AI systems produce production-quality user interfaces, including components, state handling, styling, accessibility, performance, responsiveness, and testing. The role requires 2–3 years of professional frontend experience, strong JavaScript/TypeScript, HTML, and CSS skills, experience with a modern frontend framework, excellent written English, and the ability to identify subtle implementation issues and provide evidence-based evaluations.
Responsibilities
Key Responsibilities
- Design task-specific grading criteria for frontend deliverables, including component implementations, UI bug fixes, refactors, and tests.
- Evaluate AI-generated frontend code for correctness, state and edge-case handling, accessibility, performance, responsiveness, and maintainability.
- Identify failures and subtle implementation issues that may not surface as runtime errors.
- Review component design, state handling, styling, browser behavior, and frontend testing practices.
- Assess whether interfaces follow responsive layout principles and web accessibility standards.
- Write clear, evidence-based justifications for every evaluation score.
- Apply consistent judgment across evaluations and iterate based on feedback from senior reviewers.
- Follow complex instructions and distinguish clearly between established knowledge and inference.
- Work independently on an hourly schedule while meeting the engagement's weekly availability expectations.
Requirements
Required Qualifications
- 2–3 years of professional frontend experience shipping production interfaces.
- Strong command of JavaScript/TypeScript, HTML, and CSS.
- Hands-on experience with a modern frontend framework such as React, Vue, Angular, or Svelte.
- Solid grounding in component design, state management, browser rendering, responsive layout, and frontend testing.
- Working knowledge of web accessibility standards, including WCAG, semantic HTML, and ARIA.
- Experience reviewing other engineers' code.
- Excellent written English.
- Ability to follow complex instructions, reason through ambiguity, and spot subtle errors in code that renders correctly and runs without failing.
- Ability to maintain a clear separation between what you know and what you are inferring.
- Ability to work independently, learn new tools quickly, and take feedback well.
- Based in and working from the US, Canada, or UK.
- Available for 30–40+ hours per week for the full 12-week engagement.
Benefits
Benefits and Perks
- Remote contract engagement for candidates based in the US, Canada, or UK.
- Hourly compensation of $90–$140 per hour.
- Weekly payment via Stripe or Wise.
- Flexible scheduling within the required 30–40+ hours per week.
- Initial 12-week engagement with the possibility of project extensions based on needs and performance.
- Reasonable accommodations available upon request.