About this role

ABOUT THE ROLE Join a small, fast-moving engineering team at a Y Combinator-backed AI voice platform startup building the infrastructure that powers thousands of AI-driven conversations every day. You'll work directly with customers, own projects end-to-end, and have a real say in core architecture decisions — all within a high-ownership, in-person culture in Berlin. This is a high-impact opportunity for a full-stack engineer who thrives at the intersection of scalable backend systems, real-time communications infrastructure, and modern AI-first product experiences.

WHAT YOU'LL DO - Work closely with customers to deeply understand their problems and design product experiences that solve their challenges. - Build and scale backend infrastructure capable of handling thousands of AI phone calls per day. - Craft intuitive user experiences tailored to an AI-first world. - Own high-stakes projects completely — from initial concept through production launch and post-release support. - Contribute to core product and architectural decisions alongside a small, senior team.

WHAT WE'RE LOOKING FOR Required: - 2+ years of professional software engineering experience. - Strong PostgreSQL experience, including complex queries, performance tuning, and optimization. - Experience designing scalable backend architectures and making core architectural decisions. - Familiarity with TypeScript, React, Node.js, and Python. - Experience with scalable async processing or real-time processing systems. - Proven ability to own projects end-to-end, from concept to production and beyond.

- Experience building products for AI-first or communications-enabled platforms. - Strong collaboration skills — comfortable working directly with customers and cross-functional teams. - A track record of taking a product from 0 to 1. - Willingness to work on-site in Berlin, Germany (required). Nice to Have: - Familiarity with Temporal.io, Twilio, or Modal. - Prior experience in a startup or high-growth environment. COMPENSATION & BENEFITS - Salary: €75,000 – €160,000 per year, depending on experience.

- Visa sponsorship available. LOCATION This role is on-site in Berlin, Germany. Candidates must be willing and able to work in-person at the Berlin office. Visa sponsorship is available for the right candidate.

Source listing: ashby_clera