Mercor
Software Engineer, Agents
$160K–$500K
New York City · On-site · Full-time · Posted Aug 27, 2026
About the job
Build and improve agentic products, including LLM agents, evaluation systems, orchestration services, and user-facing tools for automating work and advancing frontier AI models.
What you'll do
- Own agentic features from scoping through implementation, launch, and iteration based on customer feedback.
- Build agents, harnesses, verifiers, RL environments, and the services and pipelines that orchestrate them.
- Develop evaluation and observability tooling, full-stack interfaces, and data infrastructure to improve agent quality and reliability.
Pay
$160K – $500K • Offers Equity (base salary or total pay not specified)
Tools
Python, FastAPI, Temporal, Modal, Next.js, React, LangGraph, LangChain
AI focus
Build LLM agents, agent evaluation systems, verifiers, and RL environments; improve agent capabilities, reliability, and autonomy.
Model-written summary · the original posting is authoritative