Founding Product Engineer

About the Role This is the first engineering hire at a Y Combinator-backed AI marketing startup, working directly alongside the two founders. You will own full product features from ambiguous problem all the way to live, customer-facing product, and your work will span product thinking, frontend, backend, LLM pipelines, data, and direct customer conversations. It is a true founding-scope role with immediate, meaningful impact. What You'll Do Own product features end to end: figure out what to build, ship it, and keep iterating until it creates real customer value. Work closely with the founders and customers to turn conversations into concrete product improvements. Build and maintain production full-stack features across frontend, backend, and data layers. Design simple, intuitive UX for complex workflows. Develop and improve LLM pipelines and agentic workflows within the product. What We're Looking For Approximately 2 to 4 years of relevant engineering experience, with a strong track record appropriate for a first engineering hire. Demonstrated early-stage startup or founding experience; big-company-only backgrounds are not a fit. Has shipped products from 0 to 1 before and can independently deliver production-quality code. Proficient with TypeScript and React; familiarity with Vite, Supabase, Vercel, or ClickHouse is a plus. Comfortable working with LLMs and agentic workflows, both in the product and in day-to-day development (e.g., coding agents, MCP, or similar AI-leveraged tools). Able to own full-stack product work from an ambiguous brief through to a live feature. Communicates clearly and confidently with customers in English. Experience in GEO, SEO, or marketing technology is a bonus. Based in Munich or able to relocate readily. Compensation & Benefits Base salary of EUR 85,000 to EUR 120,000 annually, plus equity participation (VSOP). Visa sponsorship is available. Location On-site in Munich, Germany . Candidates willing to relocate are welcome to apply.