Software Engineer, Platform

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.

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 at our new New York Office at One World Trade Center.

As a Backend Engineer at Mercor, you will build core platform systems that make our operations secure, reliable, and scalable. This role focuses on two critical areas: Contracts and Identity & Access.

• Develop robust infrastructure for platform operations, including systems that support complex contract-related workflows, payouts, fraud, and more.

• Work closely with engineering leads and cross-functional partners to translate operational needs into reliable, scalable backend services.

• Improve security, reliability, and developer ergonomics across the systems that underpin Mercor's platform.

• Contribute to a fast-moving engineering organization where strong backend engineers may flex across teams and high-priority platform initiatives.

• 2+ years experience building building production systems at scale.

• Experience with identity, access control, or enterprise access management systems is a strong plus.

• Ability to work across ambiguous requirements and deliver practical, reliable systems quickly.

• High ownership mindset and willingness to work on foundational problems that support many parts of the business.