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.

Payments is the core infrastructure of our marketplace, not a back-office function. As our AI systems scale to evaluate, place, and compensate millions of workers across geographies, we are investing in making our financial systems deterministic, observable, and resilient because the models that route talent are only as good as the infrastructure that pays them. In a matter of months, we've gone from moving hundreds of thousands of dollars to hundreds of millions across our platform: what used to work at $200K won't work at $200M.

The Team You Will Join

The mission of the Payments group at Mercor is to be the financial and commercial backbone of the company.

We ensure that:

• Money moves deterministically and reliably at scale

• Failures are surfaced proactively, not reactively

• Ledger, payout, and settlement systems are observable end-to-end

• Root causes are fixed, not patched

• Automation replaces manual intervention wherever possible

We operate at the intersection of Engineering, Finance, Product, Ops, and Fraud. Our mandate is to transform payments from manual orchestration into resilient financial infrastructure.

The Role

This role exists to help build the financial backbone that supports the next 1000x. We are looking for a senior engineer to help harden and scale Mercor’s payments platform.

You will work on:

• Flow-level observability across payout → settlement → reconciliation