Craig Clayton is a self-taught, senior iOS engineer at Adept Mobile specializing in building mobile experiences for NBA and NFL teams. He also volunteers as the organizer of the Suncoast iOS meetup group in the Tampa/St. Petersburg area, and prepares presentations and hands-on talks for this group and other groups in the community. He has also launched Cocoa Academy online, which specializes in bringing a diverse list of iOS courses ranging from building apps to games for all programming levels.

Cecil Costa, also known as Eduardo Campos in Latin countries, is a Euro-Brazilian freelance developer. He has been giving onsite courses for companies such as Ericsson, Roche, TVE (a Spanish TV channel), and others. He has also worked for different companies, including IBM, Qualcomm, Spanish Lottery, and Dia. He is also the author of Swift Cookbook, Swift 2 Blueprints, Reactive Programming with Swift, and a video course called Building iOS 10 Applications with Swift, by Packt Publishing.

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