Bill Van Besien is a software engineer whose work has primarily been in the realm of spacecraft flight software architecture, UAV autonomy software, and cyber security pertaining to space mission operations. Over the past several years, he has developed software and served on the mission operations team for several NASA space missions. He holds MS and BS degrees in computer science, with a focus on cryptography and computer security. Bill splits his time between the spacecraft flight software group at the Johns Hopkins University Applied Physics Lab and Nextility, a solar energy start-up in Washington, DC. You can find more information about his projects at http://billvb.github.io.

Werner Ziegelwanger, MSc has studied game engineering and simulation and got his master's degree in 2011. His master's thesis was published with the title Terrain Rendering with Geometry Clipmaps for Games, published by Diplomica Verlag. His hobbies include programming, games, and all kinds of technical gadgets.

Werner worked as a self-employed programmer for some years and mainly did web projects. At that time, he started his own blog (http://developer-blog.net), which is about the Raspberry Pi, Linux, and open source.

Since 2013, Werner has been working as a Magento developer and head of programming at mStage GmbH, an eCommerce company focused on Magento.