Senior AI-Driven Design Systems Lead

Mercor; Greater London; Remote; GBP 70,000 - 90,000; Full time

Job summary

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

The role covers Vibecoding and Design tracks, welcoming experts in either or both to apply. Contributors design scenarios, draft reference rubrics, and articulate how senior product builders think.

Qualifications

• 5+ years working as a product designer, design lead, or AI-native engineer/vibecoder at a major product- or design-forward company.
• Direct ownership of product design systems or AI-assisted development workflows shipped to production.
• Fluency in vibecoding or design tooling, plus understanding of user-centered design principles and rapid prototyping practices.
• A portfolio of shipped work is strongly preferred in place of a formal credential; prior rubric, training, or design critique authorship is a plus.

Responsibilities

• Construct scenarios spanning rapid prototyping and iteration cycles, design system development, and cross-functional product-design-engineering collaboration.
• Build tasks across AI-assisted application development, natural-language-to-code workflows, and rapid prototyping (Vibecoding); and UX/UI design, design systems and component libraries, user research, and usability testing (Design).
• Develop scenarios involving tools such as AI coding assistants (Cursor, Claude Code, v0, Replit) for the Vibecoding subdomain, and Figma, prototyping tools (Framer), and design systems tooling for the Design subdomain.
• Apply subdomain-specific methodologies (iterative prompt-driven development for Vibecoding; human-centered design principles and heuristic evaluation for Design), and produce reference prototypes, code artifacts, design specs, and usability evaluation reports.
• Author rubrics that distinguish authentic senior-level product judgment from generic tutorial-level or template-driven work.

Skills

Product design

AI-assisted development

Rapid prototyping

User-centered design

Design systems

Figma

Shipped portfolio

Job description

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

The role covers Vibecoding and Design tracks, welcoming experts in either or both to apply. Contributors design scenarios, draft reference rubrics, and articulate how senior product builders think.