Hazem Saleh has several years of experience in Mobile, Web, Cloud and Open Source technologies. During his technical career, Hazem worked in the development of numerous products. Hazem also worked with numerous cloud solutions including AWS, and IBM Cloud. He is an Apache PMC (Project Management Committee) member and a person who spent many years of his life writing open source software. Beside being the author of the JavaScript Unit Testing book (Best selling), JavaScript Mobile Application Development book, Pro JSF and HTML5 book and the co-author of the Definitive guide to Apache MyFaces book, 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 ApacheCon North America, Droidcon, DevFest, Geecon, JavaLand, AnDevCon, JDC, CON-FESS Vienna and JavaOne. Hazem is an XIBMer, he worked in IBM for ten years. Now, He is working for ViacomCBS as a Senior Software Architect, and Principal Software Engineer. ©