AI UX Evaluation Designer - Design Systems & Scoring

Mercor; Greater London; On-site; GBP 65,000 - 90,000; Full time

Job summary

Mercor partners with a leading AI research organization to define what excellent digital product design looks like. You will craft task-specific grading criteria and rigorously score samples with well-reasoned written justifications.

The role emphasizes evidence-based judgment, reproducible scoring, and iterative feedback from senior reviewers to ensure designs meet real user needs in dashboards, portals, and onboarding flows.

Qualifications

• 5+ years of professional experience in product design, UI/UX, or design systems for real digital products.
• Experience at leading digital-product and UX studios, in-house product-design teams, or e-commerce portals with sophisticated dashboards.
• Tracks: Product/UI/Design Systems Designer, UX Lead, UX Writer/Content Designer, or digital Product/Business Analyst.
• Deep fluency in interaction/visual design, design systems, responsive layouts, end-to-end product flows, prototyping and production handoff in Figma.
• Exceptional written communication and the ability to explain why a piece of work meets or misses the bar for a real product.

Responsibilities

• Design precise, task-specific grading criteria for real-world digital product and UX deliverables (design systems and component libraries, responsive UI layouts and dashboards, end-to-end product flows).
• Score AI-generated and human work samples against those criteria, with 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 on your work.

Skills

Product design

UI/UX

Design systems

Figma

Written communication

Detail-oriented

Tools

Figma

Job description

Mercor partners with a leading AI research organization to define what excellent digital product design looks like. You will craft task-specific grading criteria and rigorously score samples with well-reasoned written justifications.

The role emphasizes evidence-based judgment, reproducible scoring, and iterative feedback from senior reviewers to ensure designs meet real user needs in dashboards, portals, and onboarding flows.