Jeff Langr is a veteran software developer with well over three decades experience building software and helping others learn how to do so. Jeff develops software for Outpace Systems, Inc., and still provides help to customers through Langr Software Solutions, Inc. Jeff's prior Pragmatic Bookshelf titles include Agile in a Flash (with Tim Ottinger) and Modern C++ Programming with Test-Driven Development.
Andy Hunt has written and co-written over a half-dozen previous titles, including the classic The Pragmatic Programmer, Practices of an Agile Developer, Pragmatic Thinking & Learning, and Learn to Program with Minecraft Plugins, and regularly speaks at conferences on software development around the world.
Dave Thomas is a programmer who likes to evangelize cool stuff. He cowrote "The Pragmatic Programmer" and was one of the creators of the Agile Manifesto. His book "Programming Ruby" introduced the Ruby language to the world, and "Agile Web Development with Rails" helped kickstart the Rails revolution.