I returned to Academia and the Department of Computer Science at the University of Arizona in 2014, after holding senior executive positions at Avaya Labs and Bell Labs. I am a co-author of the classic definitive compiler technology text" Wikipedia] popularly known as the dragon book" and the author of a textbook on programming languages. I have served on Advisory councils for NSF and various universities and on the selection committee for the Turing Award, the highest award in computing 2007-2013) After earning a B.Tech. from the Indian Institute of Technology IIT) at Kanpur and a Ph.D. from Princeton, I was a professor at Penn State 1972-1976) My Bell Labs career 1976-2000) was in the research organization. I was senior vice president for computing and mathematical sciences 1996-1999) and communications sciences 1999-2000) When the parent company, Lucent spun off its enterprise business, I was named president of Avaya Labs 2000-2014) For my contributions to compilers and programming languages, I was nominated an ACM Fellow 1996) honored as a Distinguished Alumnus 2008) and as one of the to50 alumni 2010) and selected for the first annual Pan-IIT Technology LeadershiAward 2009)