TechCrunch City Spotlight: Pittsburgh is getting closer, with impressive featured speakers including Carnegie Mellon University President Farnam Jahanian and Mayor Bill Peduto. However, we’ve saved the best for last: Our last speaker is Karin Tsai, director of engineering at Duolingo, a $2.4 billion business that is all about making language learning fun and accessible. The … Continue reading Karin Tsai, director of engineering at Duolingo, will be speaking at TechCrunch City Spotlight: Pittsburgh on June 29