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. Heis 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.

Nikola Brežnjak is an engineer at heart and a jack of all trades kind of guy.
Currently, he's the director of mobile engineering at Teltech and is responsible for the management, mentoring and coaching of mobile app developers.
He loves his job!

He wrote books on the Ionic framework and the MEAN stack and was a technical reviewer for few of Packt's books.

He likes to help out on StackOverflow where he's a top contributor.
He records a podcast called DevThink with his friend Shawn Milochik and runs a local meetup called MeCoDe.

Shaun Rowe is a software engineer with over 20 years of professional experience. He wrote his first line of code at the age of 11 and began his career at the height of the dot com boom. He has been developing for Apple platforms for over 8 years, as soon as Swift was officially supported by XCode he became an early adopter. During his 20 years in the industry he has worked in many fields and many disciplines, gaining knowledge and experience in all aspects of software development, from the web to mobile. He ran a successful mobile development agency for a number of years before moving to Amsterdam for a new and exciting opportunity at the end of 2017.