John Wargo has been a professional software developer, educator, consultant, and presenter for more than 20 years. As a subject matter expert (SME) on BlackBerry development platform and tools at Research In Motion (RIM), John was responsible for supporting a large U.S.-based carrier and its customers. He worked with key customers to help them design and build applications for their BlackBerry environments. He also created and delivered BlackBerry application developer training in cities across the United States.