Duolingo, the language-learning startup headquartered in Pittsburgh, has operated a small outpost near Seattle in Bellevue, Wash., since last summer and now plans to grow its team there in 2019.… Read More
PITTSBURGH — At times, it’s hard to keep up with Luis von Ahn. The Duolingo CEO and co-founder speaks quickly, ideas flowing out of a mind that helped the Guatemalan… Read More