Founding Product Engineer

About the Role This is the first engineering hire at a Y Combinator–backed AI marketing startup, joining a two-person founding team to own product features end to end. You'll work directly with the founders and customers — figuring out what to build, shipping it, and iterating until it drives real value. The role spans product thinking, frontend, backend, LLM pipelines, data, and customer conversations. What You'll Do Own full product features from ambiguous problem through to live, customer-facing product. Work side by side with the founders and customers to understand needs and translate them into product improvements. Design simple, intuitive UX for complex agentic and data-driven workflows. Build and maintain LLM pipelines and agentic workflows within the core product. Contribute across the full stack — frontend, backend, and data layers. What We're Looking For 1–8 years of hands-on experience shipping production SaaS features end to end. Proven ability to take a product from 0 to 1 — ideally in a startup or fast-moving environment. Strong practical experience designing and implementing LLM pipelines and agentic workflows. Proficiency in TypeScript and React ; familiarity with Vite , Supabase , Vercel , and ClickHouse is a plus. Comfortable owning ambiguous, full-stack work without needing detailed specs. Strong communicator who enjoys direct customer engagement and turning feedback into product decisions. Eligible to work in Germany or able to obtain a work visa. Compensation & Benefits Base salary: €85,000 – €120,000 per year Equity: VSOP package included Visa sponsorship: available Location On-site in Munich, Germany . No remote option — the team works together in person.