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Sierra
Software Engineer, Agent Runtime
San Francisco, CA · On-site · Full time · Mid level
$230k–$390k / year
About the role
Build core systems powering AI agents including SDK, orchestration engine, and runtime. Design agentic loops and improve retrieval and grounding for accurate responses.
What you’ll do
• Build core systems powering agents. • Design agentic loop primitives. • Improve retrieval and grounding. • Build evaluation systems for agent quality.
What you’ll bring
• Passion for AI products. • Strong software engineering fundamentals. • 4+ years building production systems. • Degree in CS or equivalent experience. • High motivation and autonomy.
Life at Sierra
Flexible unlimited paid time off, medical/dental/vision benefits, parental leave, equity plans, snacks and coffee, discretionary benefit stipend.
About Sierra
Sierra is a leading platform for customer-facing AI agents, partnering with major global brands to transform customer service and business growth.