“I was really excited to work there, because I met, like, hundreds of different nations in a day,” Ternovskiy said recently at a coffee shop near his mother’s apartment, in the far reaches of northwestern Moscow. He is thin and nervous, with light sprays of acne on his cheeks and a fuzz of dark-blond hair. He has a hard time making eye contact and learned English by spending thousands of hours chatting online, but he says that his passion is talking with people and “exploring other cultures.”