Károly is a veteran (mobile) developer having built several successful iOS apps and games, most of which were featured by Apple. He is the author of three books on programming and game development, and has worked with companies such as Apple, Siemens - Evosoft, SAP, Zen Studios, and many more. Most of his days are spent as a professional software engineer and IT architect. As an instructor, his aim is to share 20+ years of software development expertise, and change the lives of students throughout the world. His passion is helping people reveal hidden talents, and guide them into the world of startups and programming. He currently teaches object-oriented software design, iOS programming, Objective-C, Swift, and UML.