David Pritchard studied computer science and mathematics at MIT and the University of Waterloo, obtaining his PhD in 2010. He taught at Waterloo, EPFL (Switzerland), Princeton University, and the University of Southern California, while developing free software for students to practice and learn introductory programming online. He is currently employed at Google Los Angeles, and continues to volunteer for the Computer Science Circles project, which is hosted by the Center for Education in Mathematics and Computer Science in Waterloo.