Software Engineer, Frontend

ABOUT MERCOR

Mercor is defining the future of work. We partner with leading AI labs and enterprises to provide the human intelligence essential to AI development.

Our vast talent network trains frontier AI models in the same way teachers teach students: by sharing knowledge, experience, and context that can't be captured in code alone. Today, more than 30,000 experts in our network collectively earn over $2 million a day.

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 San Francisco, NYC, or London offices.

ABOUT THE ROLE

As a Frontend Engineer at Mercor, you’ll join a small, product-driven engineering team designing and building the user-facing systems that define how customers interact with our core AI infrastructure. This is a high-impact, product-focused role where you’ll work closely with design, product, and backend engineers to ship intuitive, performant, and scalable experiences for the world’s leading AI labs. From day one you’ll write production-grade code, own projects end-to-end, and balance velocity with polish, usability, and scalability.

At the end of the process, you’ll be team-matched to where you can have the most impact, on one of the following:

- Talent platform side – building next-generation tools that automate recruiting end-to-end, intelligently match candidates to roles, and power global hiring with seamless contracts and payments.

- Applied AI/human data side – partnering with top AI researchers from OpenAI, Anthropic, Google, and others to create post-training datasets that improve foundational model capabilities.

WHAT YOU’LL DO

- Design and build intuitive, performant user interfa...