Paul Holser is a Principal Consultant at Improving Enterprises, where he and his colleagues help clients adopt agile software development methods and create indefinitely sustainable software applications. He has seventeen years of software development experience, including with thought leaders such as ThoughtWorks, ObjectSpace, and Valtech. Paul's passion for sharing what he has learned shows in his previous speaking engagements at TechFest in both Dallas and Tulsa, and via his articles and blogs. He is the author of JOpt Simple, a command-line option parsing library for Java.