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
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Work closely with customers to deeply understand their problems and design product experiences that solve real challenges.
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Build and scale backend infrastructure capable of handling thousands of concurrent AI phone calls per day.
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Craft intuitive front-end user experiences tailored to an AI-first product paradigm.
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Own high-stakes projects from initial concept through production launch and post-release support.
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Contribute to core architectural decisions alongside a senior, driven engineering team.
What We're Looking For
Required:
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2+ years of professional software engineering experience.
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Strong PostgreSQL skills — including complex queries, performance tuning, and optimization.
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Experience designing scalable backend architectures and making core product/architectural decisions.
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Hands-on experience with scalable async processing or real-time processing systems.
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Experience building products for AI-first or communications-enabled platforms.
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Proficiency with TypeScript, React, Node.js, and/or Python.
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Demonstrated ability to take a product from 0 to 1 and own it end-to-end.
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Strong collaboration instincts — comfortable translating customer problems into product decisions with cross-functional teams.
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Willingness to work on-site in Berlin, Germany (this is a dealbreaker requirement).
Nice to Have:
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Familiarity with Temporal.io, Twilio, or Modal.
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Prior experience at a startup or early-stage company.
Tech Stack
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Languages & Frameworks: TypeScript, React, TanStack, Node.js, Python
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Database: PostgreSQL
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Infrastructure & Tooling: Temporal.io, Twilio, Modal
Compensation & Benefits
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Salary: $75,000 – $160,000 USD annually (range reflects experience level)
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Visa sponsorship available
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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.
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