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Mercor

UI/UX Design Expert

Mercor

UI/UX design expert defining criteria and scoring human and AI-generated product design work. Mercor partners with AI labs to train and enhance frontier AI systems.

Posted 8/16/2026contractRemote • 🇺🇸 United StatesMid-LevelSenior💰 $80 - $150 per hourWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in product design, UI/UX, and design systems, with a strong focus on creating grading criteria and evaluating design work. Proficient in Figma for prototyping and production handoff, with exceptional written communication skills and a detail-oriented approach.

Highest-signal resume keywords
Product DesignUI/UX DesignDesign SystemsFigma PrototypingAI Training Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Product DesignUI/UX DesignDesign SystemsResponsive LayoutsEnd-to-End Product FlowsPrototypingProduction HandoffUX WritingDigital Product AnalysisGrading Criteria Development
Soft Skills
Written CommunicationDetail-OrientedJudgment CalibrationFeedback IncorporationIterative Design
Tools & Technologies
Figma
Industry Keywords
Digital ProductsE-CommerceMarketplace DesignUX LeadershipAI Evaluation

About the role

Key responsibilities & impact
  • Define excellent digital product design work by designing task-specific grading criteria
  • Create grading criteria for design systems, component libraries, responsive UI layouts, dashboards, product flows, customer portals, UX writing, product content, and design-to-engineering handoff
  • Score AI-generated and human work samples against the criteria
  • Provide detailed written justifications for every score
  • Apply consistent, evidence-based judgment so scores are reproducible and defensible
  • Incorporate structured feedback from senior reviewers and iterate quickly
  • Work on projects training and enhancing AI systems

Requirements

What you’ll need
  • 5+ years of professional experience in product design, UI/UX, or design systems for real digital products
  • Experience with real digital products rather than brand or marketing sites
  • Background at leading digital-product or UX studios, in-house product-design teams at major product-led companies, or sophisticated e-commerce and marketplace companies
  • Experience in product/UI/design systems design, UX leadership, UX writing/content design, or digital product/business analysis
  • Fluency in interaction and visual design, design systems, responsive layouts, end-to-end product flows, prototyping, and production handoff in Figma
  • Ability to articulate critique as a design or UX lead would in a review
  • Exceptionally strong written communication
  • Detail-oriented, consistent, and comfortable having judgment reviewed and calibrated against peers
  • Prior AI training, evaluation, or human-data project experience is a strong plus
  • Must be able to work as an independent contractor
  • H1-B and STEM OPT candidates are not supported

Benefits

Comp & perks
  • Fully remote role
  • Flexible own schedule
  • Payments weekly via Stripe or Wise based on services rendered
  • Competitive pay
  • Collaboration with leading researchers
  • Opportunity to help shape the next generation of AI systems
  • Referral payments of up to $600 for each successful referral
  • Reasonable accommodations upon request