Founding Engineer

ABOUT THE ROLE This is the first engineering hire at an early-stage B2B SaaS company building an agentic integration platform with paying enterprise customers. You will own core systems end-to-end and set the engineering patterns every future hire builds on, working directly with the founders to ship production-ready software. WHAT YOU'LL DO - Own the agent platform, infrastructure, and integrations runtime end-to-end. - Define the engineering standards and architectural patterns the growing team will inherit. - Collaborate closely with the founders, contributing technical opinion and leadership, not just code. - Ship to production consistently, delivering reliable and observable systems with measurable customer impact. WHAT WE'RE LOOKING FOR - 3 to 9 years of professional software engineering experience building and shipping production systems. - Demonstrated ability to build something from zero to one, in an early-stage startup or a serious side project. - Experience integrating or building workflows around large language models (LLMs) and agent-based platforms. - Proficiency in TypeScript for full-stack development, React for frontend, and Node.js for backend. - Experience with AWS for cloud infrastructure and PostgreSQL for data storage and database design. - Track record of owning end-to-end feature development across frontend, backend, and infrastructure. - Experience implementing observability, monitoring, and tracing in production systems. - Experience building reliable retry and queuing patterns in distributed systems. - Strong computer science or engineering fundamentals, ideally from a rigorous academic background. - Background at an early-stage, venture-backed startup, or comparable fast-paced environment. - Based in the San Francisco Bay Area, or US-based with a concrete relocation plan to San Francisco. COMPENSATION & BENEFITS Salary range: $150,000 to $250,000 USD annually. Visa sponsorship is available where an O-1 visa is a realistic path. LOCATION On-site, five days a week in San Francisco, California, United States.