Senior Fullstack Engineer

About the Role

This is a senior fullstack engineering role at a fast-growing European Voice AI startup, building a platform that automates business phone calls for thousands of SMEs. You will own features end-to-end, from concept to production, with direct input into product direction and a strong emphasis on deep, focused work.

What You'll Do

• Own features completely, from idea and prototype through to production code used by thousands of customers across Europe.

• Build and evolve the platform using NestJS and React, shipping updates on a near-daily cadence.

• Engage directly with customers through support, feedback sessions, and user testing to surface real needs.

• Prioritise ruthlessly by breaking features into their highest-value parts, then iterating based on real-world feedback.

• Take on product and opportunity prioritisation for the Voice AI product as you grow into the role.

• Enjoy a meeting-light culture structured around maximising deep, focused engineering time.

What We're Looking For

• 5+ years of hands-on fullstack engineering experience delivering end-to-end features in SaaS products.

• Strong production experience with TypeScript, React, and Node.js, with NestJS experience strongly preferred.

• Substantial experience across both backend and frontend; frontend-only backgrounds are not a fit for this role.

• Native German proficiency, plus fluent English for team and product communication.

• Experience with product discovery: forming hypotheses, running experiments, and using metrics to make data-driven decisions.

• Comfort with direct customer interaction, including support, feedback collection, and user testing.

• A pragmatic, high-ownership mindset: you cut scope without cutting value and thrive with full end-to-end responsibility.

• Experience integrating LLMs (such as OpenAI) into production applications is a plus.

• Familiarity with GDPR or EU AI Act considerations for AI services is a plus.

• Prior experience in high-velocity startup environments shipping frequently is a plus.

Compensation & Benefits

Salary range: 80,000 to 120,000 EUR annually. Visa sponsorship is not available for this role.

Location

Fully remote, based in Germany.