Chris is an Associate Professor of Practice at the School of Engineering and Applied Science at the University of Pennsylvania. He received his B.S. in Computer Engineering from Boston University in 1995, and his M.S. and Ph.D. in Computer Science in 2006 and 2010, respectively, from Columbia University. His research interests include computer science education, software testing, and open source software development. Prior to his graduate studies, Chris was a professional software developer for companies in the United States and United Kingdom.