AI agents you can rely on. Backed by Y Combinator and Felicis.
About the role
You've seen what happens when systems hit scale, and you know which parts to rebuild before they break. This isn't a management role. You're the most experienced builder on the team, and the CTO's partner on every architectural decision that matters. Sauna's architecture works today. It won't be optimal at 1000x the current load with 50x the integration surface. You'll make the calls that shape what it becomes. Here are a few examples:
What they're looking for
- You have strong opinions on agent runtimes (Durable Objects vs. actors vs. microservices) and deployment strategies for long-running processes
- You've worked with Cloudflare Workers at scale
- You've contributed to or maintained significant open source projects
More about this role
- This is a full-time, in-person role based in San Francisco (Presidio) - we work from the office 5 days a week .
- You must be based in the Bay Area or willing to relocate before starting .
- We require US work authorization , but are open to O-1 or J-1 visa sponsorship for exceptional candidates.
Every tool you use was built as an island, so you became the glue between them: a name from Gmail into the CRM, a time from the CRM into Calendly, a note from Calendly into a doc. AI showed up and mostly became an eleventh window to paste into.
Sauna is a hybrid of AI and software standing on one shared brain. It holds your context and hands you real software built on top of it, so an ordinary Calendly becomes one that writes the invite itself and knows which of your busy hours bend, and for whom. Software for the path you repeat, AI for the edge that never repeats.
Wordware is the team behind it, 15 people backed by Spark Capital, Felicis, and Y Combinator with a $30M seed, the largest in YC's history. We build from an office in the Presidio, fifty metres from Crissy Field beach, and we work absurdly hard because we can see and feel the outcome every day.
- This is a full-time,...
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