Georgia Witchel is Founder and CEO at Mantis Biotechnology, a YC W26 company building infrastructure for human-in-computer models and digital twins. She is a repeat YC founder, having previously founded Louiza Labs (YC S25), which raised $5 million to develop synthetic medical data and autonomous surgical robotics.

Georgia competed as an elite ice climber, breaking 8 world records and bringing climbing to the Olympic stage at Lillehammer 2016 before dropping out of high school. She earned a Computer Science degree from Harvey Mudd College and a Master's in Bioengineering from the University of Washington, and worked as an algorithm engineer at Theo Health and as a founding engineer at a sports tech company.

Georgia became an avalanche-certified EMT and founded her first YC company at age 22. She has developed novel human pose estimation models and received multiple government grants working with plastic surgery teams on surgical recovery tracking.

Mantis Biotechnology was founded in 2025 and is part of Y Combinator's Winter 2026 batch, based in New York. The company provides infrastructure that unifies fragmented data sources to simulate human anatomy and physiology, transforming disparate data into validated digital twins for production applications.

Georgia's previous company, Louiza Labs, raised over $5 million and specializes in creating digital humans that accelerate development timelines by 95 times. The company aims to revolutionize medical device testing and autonomous surgical robotics, targeting simulated FDA trials and autonomous emergency surgical procedures.