About the Role Join the engineering team at a seed-stage AI communications company as a Founding Product Engineer. You will own customer-focused product features from early discovery through production, helping businesses across Europe automate phone-based customer interactions. What You'll Do • Take features from initial hypothesis and prototype through architecture, implementation, and production release. • Develop and test product hypotheses through rapid experiments and lightweight prototypes. • Work regularly with customers, partners, and Sales to identify real user problems. • Build tracking and use relevant metrics to evaluate outcomes and guide product decisions. • Develop across the stack and make pragmatic technical choices that balance validation with future scalability. • Take ownership of initiatives and move them forward with limited oversight. What We're Looking For • At least three years of product engineering experience delivering software features end to end, ideally in a startup environment. • Full-stack experience with Node.js, TypeScript, NestJS, and React. • Experience owning software from architecture and implementation through production release. • German proficiency at B2 level or above and fluent English communication skills. • A strong product mindset, customer focus, and comfort using data to support decisions. • Experience integrating large language models or building AI-powered features is an advantage. Compensation & Benefits Annual compensation is €80,000 to €120,000, with equity. Visa sponsorship is not available. Location This is a remote-first role based in Germany, with working-hour overlap in CET.