Christopher Grittner

Christopher Grittner is the co-founder and CEO of Hey Telo, a Y Combinator-backed voice AI startup based in Berlin, Germany. He leads the W25 batch company alongside his brother, developing AI agents targeting Germany's market of over one million independent craftsman businesses. Previously, Grittner served as employee number four at Tacto, a supply chain platform backed by Sequoia and Index Ventures, where he built the initial product from scratch. His earlier experience includes leading the Philippines market expansion for Finantier, managing product initiatives at the $13 billion enterprise software firm Celonis, and working at Earlybird Venture Capital. After researching large language models at the University of Cambridge and earning a degree from the Technical University of Munich, his current focus centers on deploying applied artificial intelligence to automate operations for traditional home service providers.