Founding Product Engineer

ABOUT THE ROLE This is a founding-team product engineering role at a seed-stage construction AI startup, sitting on a small, impact-driven product team. You will shape and ship core features end-to-end, working directly with customers to bring AI-powered blueprint analysis and cost estimation tools to the people who build housing and infrastructure. The work is meaningful: faster, cheaper construction means more homes, hospitals, and schools. WHAT YOU'LL DO - Own features fully, from weekly customer interviews through to production delivery the following week. - Build UIs that make complex blueprint and hardware data feel intuitive for users coming from paper-based workflows. - Contribute across the stack, working on a React frontend and a Python backend and infrastructure. - Architect and build new product capabilities from zero, taking ideas from concept to production. - Translate messy domain knowledge gathered from customers into clear, well-scoped product decisions. - Shape product direction alongside the team, not just implementation details. - Handle the operational and logistical work that keeps an early-stage startup moving. WHAT WE'RE LOOKING FOR - Demonstrated ability to ship full-stack features using React on the frontend and Python on the backend; all experience levels considered, including recent graduates. - A track record of owning features end-to-end, from customer discovery through production delivery. - Strong product taste and user-focused design sensibility. - Experience or clear aptitude for 0-to-1 architecture and product building. - Excellent communication skills, a growth mindset, and comfort with rapid iteration. - Genuine motivation to make housing and infrastructure more affordable, not just to maximise compensation. - Bonus: previously built a product that people used or paid for (as a founder or early startup employee). - Bonus: construction, blueprint, or estimation domain experience or a clear interest in the industry. - Bonus: experience applying AI or computer vision to construction workflows. - US work authorization required; visa sponsorship is not available. COMPENSATION & BENEFITS Salary range: $120,000 to $180,000 USD annually. Equity participation is expected at this stage. Visa sponsorship is not available. LOCATION On-site, full-time in San Francisco, CA, USA. Candidates must be willing to relocate if not already local.