Early-Stage Startup Engineer

About the Role Join a pre-seed AI startup as Engineer #4 on the founding team, working directly with the CTO and fellow founding engineers. This is a high-ownership, fast-paced role where you'll ship features to production daily and own entire product areas from concept to deployment. The company is building fully agentic systems that automate complex workflows — technically challenging, high-impact work at the earliest stage. What You'll Do Ship features to production on a daily cadence Own end-to-end product areas from initial concept through deployment Design, build, and consume REST APIs on the backend Build scalable frontend interfaces with React Integrate AI/ML capabilities using providers such as OpenAI or Claude Collaborate closely with the CTO and founding team to define technical direction Model and manage data using PostgreSQL and Supabase What We're Looking For Required: Proficiency in full-stack development with TypeScript/JavaScript and Python Backend experience with Node.js and REST API design/consumption Frontend experience with React for building scalable UIs Experience with PostgreSQL and Supabase for data modeling and storage Hands-on experience integrating AI/ML features via providers like OpenAI or Claude Ability to thrive in a founding-stage startup environment — owning features and shipping rapidly Strong communication and cross-functional collaboration skills Willingness to work on-site in San Francisco (hackerhouse environment) or commute as needed Location & Work Arrangement This role is based on-site in San Francisco, CA . The team works out of a shared hackerhouse/office environment. Visa sponsorship is available.