Software Engineer, Agent Runtime is open at Sierra in San Francisco, CA. The posting gives a salary of $230K - $390K. Posted on Oct 22, 2026, and still on Sierra’s careers page when we last checked, on Nov 14, 2026.
About the role
Build the core systems that power agents. You’ll work on the Agent SDK — the orchestration engine, runtime, and primitives that define how agents reason, take actions, and interact with users and systems. - Design the agentic loop. What primitives do we need to build agents that are steerable and verifiable, while still conversational and adaptive? You’ll help define how agents operate in real-world environments. -…
The opening lines of the posting. The rest is on Sierra’s careers page.
Hiring at Sierra
Sierra has 198 open roles right now, 21 of them remote. Most are in Engineering, Sales & Business Development and Product. The median advertised salary across its roles with a published range is $285K. See all its roles
