Ian Sommerville is Emeritus Professor of Computer Science at St Andrews University, Scotland. He has a BSc in Physics from Strathclyde University and MSc and PhD degrees in Computer Science from St Andrews University. He has been a full Professor of Computer Science since 1986 firstly, at Lancaster University, and, subsequently, at St Andrews University. He has written several software engineering textbooks, including 'Software Engineering', now in its 10th edition, which has been in print since 1982. In 2011, he was awarded both the IEEE TCSE Distinguished Educator award and the ACM SIGSOFT Influential Educator award. He wrote his first computer program in 1970 and, almost 50 years later, still enjoys programming.