Tracy Chou: Senior Engineer, Pinterest

Age: 26

About: Tracy Chou is a senior engineer at Pinterest, and has contributed greatly to the company's growth. She has previously interned at Facebook and Google. Before coming to Pinterest, Tracy turned down an offer to work at Facebook — she became the second engineer at Quora instead. Tracy's project "Where are the numbers?" is an effort to hold tech giants accountable for their diversity statistics. Tracy has also served as mentor at Hackbright Academy.