Dave Thomas is recognized internationally as an expert who develops high-quality software–accurate and highly flexible systems. He helped write the now-famous Agile Manifesto, and regularly speaks on new ways of producing software. He is the author of many books, including the best selling The Pragmatic Programmer: From Journeyman to Master. He's probably responsible for bringing Ruby to attention of Western developers with the book Programming Ruby and was one of the first adopters of Rails. He's a programmer, trainer, author, speaker, and publisher.

Andy Hunt is an author and publisher, avid musician, and sometimes woodworker. When not making noise or firewood he occasionally speaks at conferences. He has been active in the field of software development since before the @ sign. He co-authored The Pragmatic Programmer with Dave as well as seven other titles, was an author of the Agile Manifesto, and tweets random bits about code, life, and zen at @PragmaticAndy.