Staff Engineer

San Francisco. Posted 7 months ago

The role

You will make architectural decisions and shape the future of Sauna's architecture. You will design systems for concurrent agent sessions, define reliability standards, and ship code daily.

What you will do

Make hard architectural tradeoffs and own the outcome
Design the system that handles concurrent agent sessions across integrations
Define reliability and observability standards
Review every significant PR
Set technical direction without blocking velocity
Ship code daily
Build whatever else needs building

Required qualifications

8+ years as an IC engineer
Experience as Staff or Principal at a company with real scale
Built and operated systems that serve millions of users
Recent, hands-on AI/LLM work
Built agent systems, model routing layers, or tool-use architectures
Fluent in TypeScript

Nice to have

Strong opinions on agent runtimes (Durable Objects vs. actors vs. microservices) and deployment strategies for long-running processes
Worked with Cloudflare Workers at scale
Contributed to or maintained significant open source projects

Benefits

health
dental
401(k)
considerable PTO
gym budget
lunch

Before you apply

Must be based in the Bay Area or willing to relocate before starting
Require US work authorisation, but open to O-1 or J-1 visa sponsorship for exceptional candidates
Process includes a paid work trial

About the company

Sauna is a hybrid of AI and software. Wordware is the team behind it, 15 people backed by Spark Capital, Felicis, and Y Combinator.