Hey Telo is building voice AI software designed for craftsman businesses and home service providers in Germany and across Europe. Part of Y Combinator’s W25 batch, the two-person company aims to automate telephone communications and paperwork for tradespeople working in green infrastructure, renewable energy, and property maintenance.
Leadership from Celonis, Amazon, and Tacto
The startup was founded by Christopher Grittner, who serves as CEO, and Daniel Grittner, who serves as CTO.
Before founding Hey Telo, Christopher Grittner led product initiatives at Celonis, built product at Tacto as employee #4, and led Philippines expansion at Finantier. He was also an investment team member at Earlybird Venture Capital and conducted LLM research in data analytics at the University of Cambridge after completing a degree in Computer Science & Business at the Technical University of Munich.
Daniel Grittner previously worked as a software development engineer at Amazon and built database infrastructure at Celonis. He completed bioinformatics research at ETH Zurich and published first-author computer vision research at ECCV 2022 while studying computer science at TUM, later dropping out of his master's program at TUM to co-found Hey Telo.
Open Engineering and Sales Roles in Munich
Hey Telo is actively recruiting its founding team in-person at its Munich office across software engineering and sales operations.
On the technical side, the company is hiring a full-time Founding AI Engineer (€70,000 - €110,000 / year) to ship voice agents, build backend infrastructure, and work directly with German tradespeople. The team is also offering a four-to-six month AI Engineer Internship (4-6 months) (€2,500 - €4,000 / month) focused on building scalable backend infrastructure and user experiences.
On the business side, Hey Telo is recruiting a full-time Founding Founders Associate (Sales) (€60,000 - €90,000 / year) and a Founders Associate Intern (Sales) (€2,000 - €3,500 / month). Both positions involve building and scaling outreach, setting up operations, and onboarding new customers onto the voice AI platform.
Open Roles
| Role | Location | Work Mode | Salary |
|---|---|---|---|
| Founding AI Engineer | Munich, BY, DE / Munich, Bavaria, DE | Onsite | €70,000 - €110,000 / year |
| Founding Founders Associate (Sales) | Munich, BY, DE / Munich, Bavaria, DE | Onsite | €60,000 - €90,000 / year |
| AI Engineer Internship (4-6 months) | Munich, BY, DE / Munich, Bavaria, DE | Onsite | €2,500 - €4,000 / month |
| Founders Associate Intern (Sales) | Munich, BY, DE / Munich, Bavaria, DE | Onsite | €2,000 - €3,500 / month |
