Founding Engineer, Infrastructure

ABOUT THE ROLE Join an early-stage B2B SaaS team as its first infrastructure engineer, owning the runtime, agent infrastructure, observability, and self-hosted deployment experience. You will work closely with the founding team, establish the platform patterns for future hires, and have a path toward leading this domain. WHAT YOU'LL DO - Build and operate a cloud runtime for integrations, including durable execution, sandboxed isolation, and resilient recovery. - Develop infrastructure for coding agents that write, test, and deploy integration code in production. - Design observability across logs, metrics, and tracing for integrations and agents. - Build and maintain single-tenant, self-hostable product deployments. - Own infrastructure and platform decisions end to end, and establish engineering practices for future infrastructure hires. - Ship production systems regularly and help grow the team responsible for this area. WHAT WE'RE LOOKING FOR - Three to nine years of professional software engineering experience, including at least three years in a fast-moving, high-growth startup environment. - Production experience operating, scaling, and debugging Kubernetes, with end-to-end ownership of cloud infrastructure or a platform. - Hands-on cloud infrastructure experience and a strong understanding of production observability across logs, metrics, and tracing. - Experience using AI coding agents effectively while applying sound production engineering judgment. - Experience building self-hosted, single-tenant product deployments is valuable. - A completed or in-progress engineering, computer science, or quantitative degree and strong technical fundamentals. COMPENSATION & BENEFITS Base salary: $175,000 to $300,000 annually. Visa sponsorship is available. LOCATION On-site five days per week in San Francisco, California. Candidates based elsewhere in the United States must have a concrete plan to relocate to San Francisco.