Software Engineer

About the Role

Join a small, fast\-moving team at a Y Combinator–backed AI voice automation startup building the infrastructure that powers thousands of AI\-driven phone calls every day. As a Software Engineer, you'll own projects end\-to\-end, work directly with customers, and shape core product architecture in an AI\-first, communications\-enabled environment. This is a high\-ownership, high\-impact role for engineers who thrive at the intersection of backend systems, real\-time communication, and product thinking.

What You'll Do

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


• Build scalable backend infrastructure capable of handling thousands of parallel AI phone calls per day.


• Create intuitive, AI\-first user interfaces and experiences.


• Own high\-stakes projects end\-to\-end — from concept and architecture through production deployment and post\-release support.


• Contribute to core architectural decisions that shape the direction of the product.

What We're Looking For

Required:

• 2\+ years of professional software engineering experience.


• Strong experience with PostgreSQL.


• Proven ability to design scalable backend architectures and make core product/architectural decisions.


• Hands\-on experience with TypeScript, React, Node.js, and Python.


• Experience taking a product from 0 to 1\.


• Strong collaboration skills — able to work cross\-functionally and translate customer problems into product solutions.


• Ability to own projects fully, from concept to production and ongoing support.

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


• Experience with scalable async processing or real\-time processing systems.


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

Tech Stack

• TypeScript, React, TanStack, Node.js, Python


• PostgreSQL, Temporal.io, Twilio, Modal

Compensation \& Benefits

• Salary range: $75,000 – $160,000 USD annually


• Visa sponsorship available

Location

This is a fully on\-site role based in Berlin, Germany. Candidates should be willing and able to work in\-person in Berlin.

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