Severin Hacker is a Swiss-born entrepreneur and technologist based in New York City. He co-founded Duolingo in 2011 and serves as its Chief Technology Officer. He earned a Ph.D. in Computer Science from Carnegie Mellon University, where his research on large-scale human computation earned MIT Technology Review’s 2014 TR35 honor, and holds a B.S. from ETH Zurich.

Severin also founded the specialty roaster Above Ground Coffee and invests in ambitious startups through hacker.capital.