Founding Product Engineer

About the Role

This is a founding-level product engineering role on a small, fast-moving team building an AI phone assistant for SMEs across Europe. You will sit in the Engineering team and take end-to-end ownership of features, from early hypothesis through production, with real influence over product direction and architecture.

What You'll Do

• Own features end-to-end, from discovery and prototyping through to production release.
• Lead product discovery by forming and testing hypotheses through rapid, lightweight experiments.
• Maintain close contact with customers, partners, and Sales to surface and prioritize real pain points.
• Design and implement tracking to gather the metrics needed for data-driven iteration.
• Build across the full stack, driving architecture decisions and seeing them through to release.
• Balance pragmatic short-term validation with longer-term scalability in every solution.
• Take radical ownership of initiatives and move them forward autonomously.

What We're Looking For

• At least 3 years of product engineering experience delivering features end-to-end in a startup environment.
• Strong full-stack proficiency across Node.js, TypeScript, NestJS, and React.
• Proven ability to own software from architecture and implementation through production release.
• Native or near-native German proficiency (B2 or above), essential for this role.
• Fluent English for team and cross-functional communication.
• Deep product mindset with responsibility that extends well beyond writing code.
• Comfort extracting and owning metrics to drive and defend decisions.
• Experience integrating large language models or building AI-powered product features (strong advantage).
• Available to work with overlap in Central European Time (CET).