Dr. Edward Lavieri is a veteran developer with a strong academic background. He earned a doctorate in computer science from Colorado Technical University, an MS in management information systems (Bowie State University), an MS in education (Capella University), and an MS in operations management (University of Arkansas).

He has been creating and teaching computer science courses since 2002. Edward retired from the U.S. Navy as a Command Master Chief after 25 years of service. As the founder and creative director of three19, a software design and development studio, Edward is constantly designing and developing software. He uses a variety of game engines and development tools. His passions include developing adaptive learning systems, educational games, and mobile apps.

Edward has authored Adaptive Learning for Educational Game Design (CreateSpace), Getting Started with Unity 5 (Packt), Learning AWS Lumberyard Game Development (Packt), LiveCode Mobile Development HOTSHOT (Packt), LiveCode Mobile Development Cookbook (Packt), and Software Consulting: A Revolutionary Approach (CreateSpace). He was the technical editor for Excel Formulas and Functions for Dummies (Wiley Publishing). He has also developed numerous college courses involving computer science, information systems, and game development.

Peter Verhas is a senior developer and software system architect with more than 30 years of software development experience. He currently works for EPAM as a senior developer, where he is involved in many customer projects and actively participates in the education activities of the company. Peter writes a technical blog and is committed to open source software development. He has been using Java since 2005 and is also an author at Java Code Geeks.