8 months ago
Base Salary
$180k - $240k/yr
Responsibilities
- Build and operate sandbox infrastructure for agent code execution, process isolation, resource limits, and secure credential handling across concurrent sessions.
- Design deployment and migration pipelines for Cloudflare Workers and Fly.io, including blue-green rollouts and canary patterns.
- Instrument real-time workloads involving SSE streaming, task queues, and multi-model LLM provider routing.
- Ship backend capabilities, tool integrations, scheduled task execution, and memory indexing.
- Build structured logging, tracing, monitoring, and incident response tooling to reduce operational toil.
- Develop and ship full-stack features across the agent runtime, backend APIs, web UI, and desktop UI.
Requirements
- At least 5 years of engineering experience building and operating backend systems in production.
- Fluency in TypeScript and comfort working across the stack, with a backend focus.
- Production experience building real-time systems using WebSockets, SSE, event streaming, or message queues.
- Strong understanding of distributed systems and consistency tradeoffs.
- Experience shipping infrastructure to real users rather than only building internal tooling.
- Experience being on-call.
- Experience with Cloudflare Workers, Durable Objects, or edge serverless compute is preferred.
- Experience building agent systems, model routing layers, or LLM tool-use architectures is preferred.
- Founder or early-stage engineering experience and strong product orientation are preferred.
Benefits
- Full-time, in-person work in San Francisco's Presidio office five days per week; candidates must be based in the Bay Area or willing to relocate before starting.
- Base salary of $180K–$240K plus meaningful early-stage equity.
- Health, dental, 401(k), considerable paid time off, gym budget, and lunch.
- Paid work trial, usually lasting a few days to two weeks, with flexibility on duration.
Tech Stack
Categories
About Sauna
Sauna (by Wordware) builds an AI assistant that compiles personal context to automate repetitive workflows—such as scheduling—and augment day‑to‑day knowledge work. It targets professionals who want software that adapts to their patterns, integrating with tools like scheduling apps rather than replacing them. The company is privately held, based in San Francisco, and raised a seed round in 2024.