Software Engineer

ABOUT THE ROLE

Join a small, fast-moving engineering team at a Y Combinator-backed conversational AI voice startup building the infrastructure that powers thousands of AI-driven phone calls every day. This is a high-impact, full-stack engineering role where you'll own projects end-to-end, influence core architecture decisions, and work directly alongside customers to ship meaningful product experiences in an AI-first, communications-enabled platform.

The company is on-site in Berlin, Germany — visa sponsorship is available for the right candidate.

WHAT YOU'LL DO

• Work closely with customers to deeply understand their problems and design product experiences that solve real challenges.

• Build and scale backend infrastructure capable of handling thousands of concurrent AI phone calls per day.

• Craft intuitive front-end user experiences tailored to an AI-first product paradigm.

• Own high-stakes projects from initial concept through production launch and post-release support.

• Contribute to core architectural decisions alongside a senior, driven engineering team.

WHAT WE'RE LOOKING FOR

Required

• 2+ years of professional software engineering experience.

• Strong PostgreSQL skills — including complex queries, performance tuning, and optimization.

• Experience designing scalable backend architectures and making core product/architectural decisions.

• Hands-on experience with scalable async processing or real-time processing systems.

• Experience building products for AI-first or communications-enabled platforms.

• Proficiency with TypeScript, React, Node.js, and/or Python.

• Demonstrated ability to take a product from 0 to 1 and own it end-to-end.

• Strong collaboration instincts — comfortable translating customer problems into product decisions with cross-functional teams.

• Willingness to work on-site in Berlin, Germany (this is a dealbreaker requirement).

Nice to Have

• Familiarity with Temporal.io, Twilio, or Modal.

• Prior experience at a startup or early-stage company.

TECH STACK

• Languages & Frameworks: TypeScript, React, TanStack, Node.js, Python

• Database: PostgreSQL

• Infrastructure & Tooling: Temporal.io, Twilio, Modal

COMPENSATION & BENEFITS

• Salary: $75,000 – $160,000 USD annually (range reflects experience level)

• Visa sponsorship available

• Opportunity to work on a high-growth product from the ground floor with a lean, driven team

LOCATION

This role is on-site in Berlin, Germany. Remote or hybrid arrangements are not available for this position. Visa sponsorship is offered to qualifying candidates.