Founding Product Engineer

About the Role This is a founding-level product engineering role at an AI-native B2B SaaS company building the intelligence layer for strategic procurement. You'll work across the full stack — frontend, backend, and LLM integrations — shipping features end-to-end for enterprise customers who are actively pulling for more. The work is fast-paced, high-ownership, and directly shapes how AI agents and procurement professionals interact at scale. What You'll Do Prototype, build, and ship full-stack features across UI, backend services, and LLM/agent pipelines. Design and refine prompts, agent workflows, and LLM integrations to power sophisticated procurement experiences. Translate real user feedback and behaviour into product improvements, working closely with enterprise customers. Own features end-to-end — from UX and interaction design through backend logic to prompt engineering. Iterate rapidly, using AI tooling as a natural part of your development workflow. Turn complex agent pipelines into experiences that feel simple and intuitive to end users. What We're Looking For 1–10 years of professional software development experience. Strong fullstack TypeScript skills across frontend and backend. Demonstrated ability to work with LLMs — prompting, tuning, and integrating them into real products (side projects and hackathons count). Strong product instincts and a genuine drive to put things in front of users and iterate on what you learn. High agency, outcome-driven mindset — you find a way forward without waiting for permission. Comfortable navigating ambiguity and moving fast without a playbook. Excited to work in-person with a tight-knit team in Berlin. Compensation & Benefits Salary range: €90,000 – €140,000 per year. Visa sponsorship is not available; candidates must be eligible to work in Germany independently. Location On-site in Berlin, Germany . This role requires physical presence; remote work is not available.