Sierra
Software Engineer, Agent Builder
$230K–$390K
San Francisco, CA · On-site · Full-time · Posted Oct 22, 2026
- Experience
- 4+ years hands-on experience building production products and systems.
- Education
- Degree in Computer Science or related field, or equivalent professional experience.
About the job
Build full-stack products and tools for developing, guiding, simulating, and benchmarking customer-facing AI agents.
What you'll do
- Build simulation and benchmarking systems for testing AI agents against real-world scenarios.
- Create no-code content-management tools to guide and test agents, and adapt software development practices to AI agents.
- Develop generative tools and self-improving systems using real-world interactions, customer feedback, and self-play.
What they ask for
- 4+ years hands-on experience building production products and systems.
- Experience and comfort building and shipping full-stack solutions.
- Degree in Computer Science or related field, or equivalent professional experience.
Nice to have
- Experience building AI-powered products; a sharp eye for design.
- Experience with Go and Typescript, developer tooling, programming languages, or databases; technical project or team leadership.
Pay
$230K – $390K (base salary)
Tools
Go, Typescript, Cursor, Claude Code
AI focus
Build customer-facing AI agent development, testing, benchmarking, and generative/self-improving systems.
Model-written summary · the original posting is authoritative