Software Engineer, Agent Harness

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Software Engineer, Agent Harness in USA

Sim
Full time
Email

USA
08/27/2026
Report

San Francisco, CA

Responsibilities

Build the agent harness that creates workflows, tables, knowledge bases, and completes everyday tasks.
Develop agent planning, tool-calling, memory, failure-recovery, and reliability capabilities.
Build robust infrastructure that supports operation at scale for more than 100,000 builders.
Translate intuition about LLM behavior into dependable systems.

Requirements

Ability to think clearly about LLM behavior, including tool calls, context, retries, and evaluations.
Ability to turn understanding of LLM behavior into robust infrastructure.
Mission-driven, passionate, and creative approach to work.

Salary: $210k - $260k/yr

Sim

Sim delivers innovative solutions that streamline business processes and enhance operational efficiency. By combining cutting‑edge technology with a customer‑centric approach, Sim empowers organizations to achieve sustainable growth and stay ahead in a rapidly evolving marketplace. Our dedicated ...

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