AI Infrastructure Engineer

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. Summary of role: AI Infrastructure Engineer will build and run the GPU and accelerator platform our AI workloads depend on. That covers the clusters and schedulers underneath, training and inference serving on top, and the observability and cost data that tell us how well the fleet is used.

will write production code every day and own systems end to end, from design through on-call.

Design, deploy and operate GPU clusters across AWS, GCP, and other hyperscalers/neocl