Lee Zhi Eng is a 3D artist-turned-programmer who worked as a game artist and programmer in several local game studios in his native country before becoming a contractor and a part-time lecturer at a local university and teaching game development subjects, particularly those related to Unity Engine and Unreal Engine 4. You can find more information about him at http://www.zhieng.com.
Sudhendu Kumar has been a GNU/Linux user for more than 7 years. Currently, he is a software developer for a networking giant, and in his free time, he also contributes to KDE.
Mickael Minarie is a software developer who graduated from the University of Clermont-Ferrand (bachelor's in embedded systems) and Robert Gordon University, Aberdeen (bachelor's in computer science). He has worked on freelance projects, developing some programs in C++/Qt for embedded systems or in programs linked with photos and videos.
He now lives in France, but he has lived in the UK and Canada for some years.
He is an analog photography and video enthusiast and has written articles for photography fanzines.