Founding Engineer

ABOUT THE ROLE Join the founding engineering team at an early-stage B2B SaaS company building AI tools for industrial ingredient manufacturers. This hands-on role spans product engineering, backend systems, frontend experiences, infrastructure, and AI agents that help customers process complex operational documents. WHAT YOU'LL DO - Build backend systems that ingest and process documents from customer business systems and inboxes. - Develop production AI agents that complete complex, multi-page compliance and food safety documents. - Own products end to end, from customer discovery and problem definition through architecture, launch, and iteration. - Ship quickly, gather feedback from real users, and improve products based on how they work in practice. WHAT WE'RE LOOKING FOR - At least 4 years of professional software engineering experience, with a track record of hands-on production coding. - Previous experience as a founder, co-founder, CTO, VP of Engineering, or engineering leader at an early-stage startup, and interest in returning to an individual contributor role. - End-to-end ownership of products or major features used by real customers, including experience taking products from 0 to 1. - Strong full-stack skills, including the ability to take a feature from backend service through to the user interface. - Experience building backend services that process real-world data and designing relational databases such as Postgres. - Production experience with AI, LLMs, agents, search, RAG, or automation; document processing and unstructured data extraction are relevant. - Familiarity with Kotlin and Spring Boot or another JVM backend, React and Next.js, cloud platforms such as GCP, and production model integrations is helpful. Experience with other stacks is welcome. - Interest in fast-moving product development and solving problems in manufacturing, supply chain, or other established industries. COMPENSATION & BENEFITS Base salary is $180,000 to $250,000 annually, plus 0.5% to 1.5% equity. Visa sponsorship is not available. LOCATION This is a fully on-site role in San Francisco, California.