Design Engineer

About Mercor

Mercor is at the intersection of labor markets and AI research. We partner with leading AI labs and enterprises to provide the human intelligence essential to AI development.

Mercor is creating a new category of work where expertise powers AI advancement. Achieving this requires an ambitious, fast-paced and deeply committed team. You’ll work alongside researchers, operators, and AI companies at the forefront of shaping the systems that are redefining society.

Mercor is a profitable Series C company valued at $10 billion. We work in-person five days a week in our new San Francisco headquarters.

As a Design Engineer at Mercor, you’ll sit at the intersection of design and code, owning and evolving every surface across  You’ll partner with design, product, marketing, and operations to ship fast, polished, and high-performing experiences – balancing brand, usability, and performance while driving projects end-to-end. From day one you’ll write production-grade code, own projects end-to-end, and balance velocity with polish, usability, and scalability.

• Collaborate with design and product teams to take concepts from wireframes to production.
• Design and build intuitive, performant user interfaces that scale across platforms.
• Integrate APIs and data flows seamlessly with backend systems.
• Write clean, maintainable React/Type Script code and contribute to frontend documentation.
• Participate in design reviews, code reviews, and retrospectives.
• Solve complex product and technical challenges under real-world constraints.
• Contribute to systems that power training, evaluation, and scaling for leading AI labs.

• Strong coding fundamentals and proficiency in JavaScript/Type Script (React + Next.js stack) and CSS.
• Understanding of frontend architecture, state management, and design patterns.
• Familiarity with APIs, data fetching, and performance optimization.
• Ability to thrive in ambiguous, fast-moving environments with high ownership.
• Strong design sense and attention to detail.
• Curiosity, grit, and a bias toward simple solutions to complex problems.
• Strong communication skills and ability to articulate technical and product tradeoffs.
• Excited and curious about Mercor.

• Experience with Sanity (CMS) & SEO basics.
• Experience with visualizations or charting libraries.
• Exposure to AI tools, LLM-powered products, or projects in this space.
• Experience at top-tier tech companies or fast-scaling startups.
• Contributions to open source or shipped side projects.
• Background in design systems, accessibility, or developer tooling.
• Exposure to real-time data, visualization libraries, or high-performance UI.

• Generous equity grant vested over 4 years
• A $20K relocation bonus (if moving to the Bay Area)
• A $10K housing bonus (if you live within 0.5 miles of our office)
• A $1K monthly stipend for meals
• Free Equinox membership
• Health insurance

Compensation Range: $150K - $300K