Hazem Saleh has more than fifteen years of experience in Cloud and Mobile technologies. During his technical career, Hazem worked in developing numerous mobile app and web products. Hazem is an Open source enthusiast, an Apache PMC (Project Management Committee) member and a person who spent many years of his life writing open source software. Besides being an author of five technical books about mobile development, web development and software engineering best practices, Hazem is also an author of many technical articles, a developerWorks contributing author and a technical speaker in both local and international conferences such as AnDevCon, ApacheCon North America, Geecon, JavaLand, JSFDays, CON-FESS, Droidcon and JavaOne. Hazem is an XIBMer, He worked in IBM for ten years. Now, He is working for Viacom New York as a Software Architect.