Sim

Build and deploy autonomous AI agents for enterprise customers, owning integrations, production launches, and continuous improvement from idea to execution. This in-person San Francisco role works closely with customers, founders, and the product team.

Build Sim’s agent harness—the core agent that plans work, calls tools, uses memory, recovers from failure, and runs reliably at scale. You’ll turn a clear understanding of LLM behavior into robust infrastructure for more than 100,000 builders.