Founding Voice Agent Engineer

At Hey Telo, we’re building voice AI for the Home Service industry. We're growing fast and looking for world-class founding engineers to join our founding team to build and scale Hey Telo across Germany.

We’re looking for a Founding Voice Agent Engineer to shape the future of how people interact with home service providers. In this position, you will play a key role in shaping Hey Telo’s product, technology, and culture from the ground up.

If you are a builder who thrives with modern LLM techniques and voice agents - this is your opportunity to set the technical direction from day one.

What you will be working on

• Collaborate closely with our customers and help them solve their problems to make their work more enjoyable
• Optimize our voice agents for reliability, accuracy, and indistinguishability from talking to a real human
• Build scalable backend infrastructure to handle thousands of phone calls per day

What we're looking for

Technical Skills

• Expertise in modern LLM techniques (transformers, agents, RAG, fine-tuning, context engineering) and STT/TTS models
• Experience in software engineering (Python)
• Deployed voice agents using LiveKit, Vapi, Pipecat or anything similar to production
• You leverage AI tools that make you more productive (Claude Code, Cursor, Windsurf, etc.)

Language Skills

• You are fluent in German (at least C1) and thrive in talking to customers, visiting them, and putting their needs first.

Commitment and Mindset

• You love challenging work and solving hard problems where others give up.
• You have full ownership from day one and aren’t afraid to push hard.

Company Perks

• Premium gym and sport membership (Urban Sports Club) - feel free to join our weekly team workouts.
• Competitive salary + meaningful equity.
• You’ll be one of the first hires - your fingerprints will be all over Hey Telo, and your equity will reflect that.
• You’ll have direct exposure to the founders, customers, and product decisions.

Interview Process

20min intro call

1. Technical Interview
   1. Take-Home Exercise, including a short presentation and a brief algorithmic coding challenge
   2. System Design Interview
2. In-person chat (45min) at our office or over lunch
3. Work with us for a day