Founding Full-Stack Engineer

I am helping a YC W25 seed-stage startup find a founding-level engineer to build an AI-native platform for defense and aerospace supply chains. They are replacing 40-year-old legacy systems with autonomous operations and already have 7-figure ARR.This is a strictly on-site role in San Francisco. Relocation and visa sponsorship (E2/O-1) are available for the right person.The MissionYou will architect and build full-stack systems from scratch that integrate modern AI with complex, legacy industrial environments. You will own features end-to-end, from database schema design to the frontend.Real Requirements Full-stack mastery: Advanced TypeScript/JavaScript and experience with Svelte, React, or Next.js. SQL depth: Deep knowledge of PostgreSQL (complex queries and optimization). Proof of work: You must have a portfolio of shipped work (GitHub, live app, or video demo). Independence: You can architect systems and make technical decisions without hand-holding. Presence: You must be in SF or ready to relocate immediately.Responsibilities Building robust full-stack systems from zero. Modernizing legacy industrial infrastructure via modern software. Owning high-value supply chain features end-to-end. Shipping fast in an ambiguous, high-accountability environment.The Process Initial Call: Chat with me (Hubert) to see if we're a match. Tech Screening: Deep dive into your technical skills. Founder Call: Quick sync with the founder. On-site: We fly you out to SF HQ for an in-person session (expenses covered). Offer.Interested? Send over a link to something you've built.