Gary Stewart graduated from Yale University, Department of Political Science, and Law School. First, he worked as a law clerk in Washington D.C. Then he worked as an associate attorney at Simpson Thacher & Bartlett LLP and Freshfields Bruckhaus Deringer. He was the co-founder of Nuroa Internet S.L. He also worked for Wayra España (Telefónica) as executive director. Currently he is the director of Wayra UK (a Telefónica Initiative) and Associate Professor / Entrepreneur in Residence at Instituto de Empresa Business School.