I am the co-founder and CTO of Duolingo. Before Duolingo, I studied computer science and graduated from Carnegie Mellon University with a PhD. Before CMU, I studied at ETH Zürich, majoring in computer science. I grew up in Switzerland, and yes, my last name is real. You can find me on Twitter and LinkedIn.
I also invest in early-stage tech startups through hacker.capital and 99 Tartans