Sid Espinosa’s career has spanned the philanthropic, government and business sectors. He is currently the Head of Social Impact at GitHub. Previously, Mr. Espinosa has served as the mayor of Palo Alto, CA, and as the director of philanthropy at Microsoft and Hewlett-Packard. He has worked for a U.S. ambassador overseas, served as an aide to former U.S. Attorney General Janet Reno at the US DOJ, and worked in speechwriting at the White House. Mr. Espinosa has served on numerous non-profit, business and foundation boards of directors, as well as boards at his alma maters, Wesleyan and Harvard.