Destava

Software Engineer, Agent Runtime

Sierra is hiring for Software Engineer, Agent Runtime in San Francisco, CA. Mid level. First seen October 22, 2026, posted 3 times; open as of November 12, 2026. Jobs taken straight from company career pages — no aggregator in between.

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Company
Sierra
Where
San Francisco, CA
Level
Mid
First seen
October 22, 2026
Postings
3
Listed via
Ashby

What the posting says

WHAT YOU'LL DO - 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. - Improve retrieval and grounding. You’ll build systems that ensure agents provide accurate, trustworthy responses by effectively retrieving and using knowledge. -…

Read more and apply on Sierra's site

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