Mercor

Senior Software Engineer, Discovery

San Francisco
Salary
$250K - $500K
Level
Senior
Work type
On-site · San Francisco

Not stated in the posting: visa.

Open. First seen 3 November 2026.

About the role

About Mercor

Mercor's mission is to organize human intelligence to power the AI economy. We're a leading AI data company, building the layer between human expertise and frontier models. Millions of domain experts on the platform are paid over $4 million per day to train frontier AI models. Mercor's APEX benchmark family measures AI's real-world impact on professional work. Mercor Enterprise brings this same infrastructure to Fortune 500 companies: helping companies capture how their best people actually work, translating that expertise directly back into agents.

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.

The Role

Project leads at Mercor run and scale distinct data production businesses, each hiring and upskilling thousands of experts, while managing throughput and quality. We're building a self-optimizing automation platform that lets one person run a business of tens-hundreds of millions in revenue.

You'll own major parts of it:

  • Agents that source, vet and staff with minimal human input
  • Pay and incentives models that hire and retain the best experts
  • Experiments and workflows that keep huge projects running smoothly
  • Agents that are accountable for monitoring and driving real revenue goals

Who We're Looking For

We want engineers with 5+ years of experience who thrive under ambiguity, seek out outsized scope and fight for high quality.

Benefits

  • Bi-annual performance bonus structure
  • Generous equity grant vested over 4 years
  • Up to $15k Relocation bonus
  • $10K housing bonus (if you live within 0.5 miles of our office)
  • $1.5K monthly stipend for meals
  • Free Equinox membership
  • $200 monthly laundry reimbursement
  • $200 monthly personal wellness reimbursement
  • Health, Dental, Vision insurance

The team: Core Engineering HIRES STEADILY

This role is one of 20 open in Core Engineering. 3 were posted in the last 30 days and the oldest in September: a team that hires all year rather than one being built.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

LLM (10 of 20), Python (9 of 20), PostgreSQL (6 of 20), TypeScript (5 of 20), GitHub (4 of 20), Kubernetes (4 of 20), Machine Learning (4 of 20)

OTHER ROLES ON THIS TEAM

From the team and dates on Mercor's own job board.

See Software Engineer salaries in San Francisco →

Similar jobs

More jobs like this

Is this your posting? Email info@careerholo.com to have it removed.