Charlie Stigler

Charlie Stigler is the co-founder and CEO of Tenor, a San Francisco startup building voice-AI role-play simulations that let managers rehearse hard conversations and get instant feedback. He first made his mark at 16 by writing SelfControl, one of the earliest open-source distraction blockers for the Mac, downloaded by millions. He dropped out of Columbia to become a 2012 Thiel Fellow, founded the video-learning company Zaption (acquired by Workday in 2016), led engineering teams at Workday, and landed on Forbes' 30 Under 30 in 2016. Off the clock he is a steel sculptor with the Flaming Lotus Girls, a competitive punner, and a songwriter.