Software Engineer Intern

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.

About the Role

As a Member of Technical Staff, Intern at Mercor, you’ll join a small, product-driven engineering team building the systems behind how the world’s leading AI labs source expert talent and human data. You’ll write production code from your first week and ship work that reaches customers.

You’ll start on the work your team has wanted to do but hasn’t had the hands for, and as needs come up you’ll take deep ownership of them, with a named mentor alongside you. You’ll work closely with product and design, move fast, and hold a high bar for quality, scalability and simplicity.

Where You’ll Work

Interns start on a rolling basis, so summer, spring and fall terms all work. About six weeks before your start we’ll match you to the team where you’ll have the most impact, across one of the engineering sub-departments:

- Talent platform. The marketplace that sources, vets, matches and pays expert talent.

- Applied AI. Delivery systems, quality control and evals for the human data we ship to frontier labs.

- Agents. Internal agents that automate operational work across the company.

- Platform engineering. Shared infrastructure, contracts, payments and reliability.

- Studio. The platform for creating and analyzing datasets.

What We’re Looking For

- Pursuing a degree in Computer Science or a related field, graduating 2027 to 2029

- Strong programming skills in Python, Go or TypeScript

- Solid grounding in data structures, algorithms and systems

- Experience with APIs, SQL or NoSQL databases and cloud platforms

- Curiosity about AI and an interest in startups

- Excited to work in person in San Francisco

Why Mercor

- Impact: your work powers how frontier AI labs train and deploy their models

- Learning: early exposure to frontier AI research and engineering