Amirsaman Memaripour is a second year PhD student at the Department of Computer Science and Engineering of University of California, San Diego. Along with his studies as an undergraduate and Master's student, he has been developing web applications using PHP and ASP.NET. For the past 3 years, he has been actively using the Yii framework to develop medium- and large-scale web applications.

Atsushi Sakurai has been working on the design of microprocessors—including a 32-bit CISC, RISC, and a 64-bit VLIW processor—for over 25 years at Fujitsu. In the past, he has been the manager of the support project for ARM processors. He started this project 13 years ago and built the support site using plain PHP, and then rebuilt the system using Yii 5 years ago. He is a founder of the Japanese users group of Yii, named Yii-Jan. He left Fujitsu in 2013, and then started a consulting company named FS-Micro Corp that helps automotive suppliers in terms of the functional safety based on the ISO 26262. Naturally, he built a website for the company by himself using Yii, as Yii is a powerful framework that can reduce the development cost of the portal site greatly.

Jonathan Weatherhead is a code scientist, software developer, Internet enthusiast, and coffee addict. Specializing in web-driven technologies and object-oriented architectures, he has been working with PHP since 2003 and maintains his blog at planetjon.ca.

He passionately feels that, "The great thing about software development is that you get to play God with your very own sandbox."