Founding Product Engineer

About the Role

A well\-funded European AI SaaS startup is looking for a Founding Product Engineer to take end\-to\-end ownership of product features — from initial hypothesis and rapid prototype all the way to production. You'll be joining the Engineering team at an early, high\-growth stage, working on an AI\-powered phone assistant platform used by thousands of SMEs across Europe. This is a high\-ownership role with a strong product and customer focus, not just a coding position.

What You'll Do

• Own features end\-to\-end — from idea and discovery through architecture, implementation, and production release.


• Lead product discovery by forming and rapidly testing hypotheses through lightweight experiments and prototypes.


• Maintain close, recurring contact with customers, partners, and the Sales team to surface real pain points.


• Design and implement tracking to gather the metrics needed for data\-driven decisions.


• Build across the full stack and drive architecture choices through to release.


• Prioritize pragmatic solutions that balance immediate validation with long\-term scalability.


• Take radical ownership of initiatives and move them forward autonomously without waiting for sign\-offs.

What We're Looking For

Must\-haves:

• 3\+ years of full\-stack product engineering experience delivering end\-to\-end software features.


• Strong hands\-on experience with Node.js, TypeScript, NestJS, and React.


• Native\-level German proficiency (Deutsch auf Muttersprachniveau) — this is a hard requirement.


• Deep product mindset: you take responsibility beyond writing code and focus relentlessly on customer value.


• Experience integrating software with external systems such as CRMs, calendar apps, and databases.


• Ability to gather customer feedback, translate pain points into product decisions, and collaborate with sales and partners.


• Comfortable identifying, tracking, and analyzing relevant metrics to make data\-driven decisions.

• Experience integrating AI/LLM services (e.g., OpenAI or similar).


• Familiarity with GDPR compliance and EU AI Act considerations in product development.


• Prior experience in a remote\-first, asynchronous work environment.


• Background at a B2B SaaS or conversational AI company.

Location

This is a remote\-first role with overlap expected in Central European Time (CET). There is an optional office in Vienna, Austria available for use. No visa sponsorship is available.

Compensation \& Benefits

• Competitive salary: €80,000 – €120,000 annually


• Equity participation in a high\-growth environment


• Opportunity to shape the product and engineering culture at the founding stage

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