Software Engineer, Agents
Mercor · San Francisco or NYC
ABOUT MERCOR Mercor's mission is to organize human intelligence to power the AI economy. 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 $3 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 in our San Francisco, NYC, or London offices. About the Role We're looking for a strong engineer who can build agentic products that scale. You will work with: - Backend: Python, FastAPI, Django, Pydantic - Frontend: Next.js, React, TypeScript, Tailwind - Data: PostgreSQL, MySQL, Snowflake, DuckDB, Redis - Orchestration/Infra: Kubernetes, Temporal, Modal, Woz - Agents/LLM: LangGraph, LangChain, FastMCP, Harbor, NemoGym - Observability: Datadog, PostHog, LangSmith At the end of the process, you’ll be team-matched to where you can have the most impact, on one of the following: - Automation – We build intelligent systems and agents that automate operational work at scale—handling talent management, decision-making insights, and knowledge access—so humans can focus on higher-level thinking.This is a newly formed, CEO-facing team focused on 0→1 product development, with a strong emphasis on business impact. The work is highly cross-functional, touching nearly every system across the company. - Studio – We own Mercor’s evaluation system & annotation platform for RL environments and tasks. We build harnesses, agent