Founding Product Engineer

About the Role This is a founding-level engineering role at a fast-moving AI startup building an intelligent platform for strategic procurement. You'll work across the full stack — frontend, backend, and LLM integrations — shipping sophisticated agent-powered features directly used by enterprise customers. Your work will define how AI and procurement professionals interact at scale. What You'll Do Build and ship full-stack features end-to-end, from UI through backend services to prompt workflows. Prototype rapidly with LLMs and iterate based on real user feedback to refine product experiences. Design and integrate agentic pipelines that make complex procurement intelligence feel simple and intuitive to users. Translate signals from enterprise customers into well-scoped product experiences that land quickly. Own prompt design, tuning, and LLM integration as a core part of the engineering work — not an afterthought. Collaborate closely with the team in-person to move fast, make decisions, and build something exceptional. What We're Looking For 1–10 years of professional software development experience; all levels considered — mindset and output matter most. Strong proficiency in full-stack TypeScript across frontend and backend. Demonstrated ability to work with LLMs: prompting, tuning, and integrating them into real products — shown through work, side projects, or hackathons. Sharp product instincts and creative drive to build experiences users genuinely love. High agency and outcome-oriented — you find a way forward without waiting for permission. Comfortable navigating ambiguity and iterating quickly in a fast-moving, early-stage environment. Eligible to work in Germany without employer-sponsored visa sponsorship. Compensation & Benefits Salary range: €90,000 – €140,000 EUR annually . Visa sponsorship is not available for this role. Location On-site in Berlin, Germany . Physical presence is required; remote work is not available for this role.