Senior Design Systems & AI-Driven Prototyping Lead

Obsidian; Greater London; Remote; GBP 90,000 - 130,000; Full time

Job summary

Mercor is seeking senior product design and AI-assisted development professionals to build evaluation tasks for AI systems operating in rapid prototyping, product design, and human-AI collaborative coding contexts.

The role spans Vibecoding and Design tracks, requiring expertise in either area or both, to design scenarios, draft outputs, and write rubrics for senior-level product builders and designers.

Qualifications

• 5+ years as product designer, design lead, or AI-native engineer at a product/design company.
• Direct ownership of product design systems or AI-assisted workflows shipped to production.
• Fluency in vibecoding or design tooling, with user-centered design and rapid prototyping.
• Portfolio of shipped work; rubric or design critique authorship is a plus.

Responsibilities

• Construct scenarios spanning rapid prototyping and design-system development.
• Build tasks across AI-assisted development, natural-language-to-code workflows, and prototyping.
• Develop scenarios using AI coding assistants and design tooling for subdomains.
• Publish reference prototypes, code artifacts, design specs, and usability reports.
• Author rubrics distinguishing senior-level product judgment from tutorials.

Skills

Product design

AI development

Design systems

Rubrics authoring

Tools

Figma

Framer

Cursor

Claude Code

Replit

Job description

Mercor is seeking senior product design and AI-assisted development professionals to build evaluation tasks for AI systems operating in rapid prototyping, product design, and human-AI collaborative coding contexts.

The role spans Vibecoding and Design tracks, requiring expertise in either area or both, to design scenarios, draft outputs, and write rubrics for senior-level product builders and designers.