Founding Engineer, Infrastructure

ABOUT THE ROLE Join an early-stage B2B SaaS team as its first infrastructure hire, owning the runtime, agent infrastructure, observability, and self-hostable deployment platform. You will work closely with the founders, establish foundational engineering practices, and help grow the infrastructure team. WHAT YOU'LL DO - Build and operate a cloud runtime with durable execution, sandboxed isolation, and self-healing capabilities. - Develop infrastructure for coding agents that write, test, and deploy integration code in production. - Design observability across integrations and agents, including logs, metrics, and tracing. - Deliver a single-tenant, self-hostable product deployment and own the infrastructure platform end to end. - Set engineering patterns for future infrastructure hires, ship production improvements regularly, and help hire and lead the team as it grows. WHAT WE'RE LOOKING FOR - Three to nine years of professional software engineering experience, including at least three years in fast-moving, ambiguous startup environments. - Hands-on experience operating, scaling, and debugging Kubernetes in production, with end-to-end ownership of cloud infrastructure or a platform. - Practical cloud infrastructure experience, production observability expertise across logs, metrics, and tracing, and familiarity with Kubernetes, TypeScript, PostgreSQL, AWS, and Docker. - Experience using AI coding agents effectively while applying sound production engineering judgment. - A completed or in-progress degree in engineering, computer science, or a quantitative field from a strong technical university. - Experience as a funded startup founder or as an engineer at an early-stage, well-backed startup; experience with self-hosted, single-tenant deployments is valuable. - Based in the San Francisco Bay Area and available to work on-site five days a week, or US-based with a concrete relocation plan to San Francisco. COMPENSATION & BENEFITS Base salary is $175,000 to $300,000 USD annually. Visa sponsorship is available, including O-1 sponsorship where appropriate. LOCATION On-site in San Francisco, California, five days per week.