Georg Bisseling is a software developer with two decades of experience in many fields as diverse as neural networks, cryptography, radio monitoring, high performance computing, and business intelligence systems. He lives in Bonn, the former capital city of Western Germany.

Colin Deady started his career in IT in the late 1990s when he discovered software testing ("They want me to break it?"), having previously fallen in love with computers, thanks to his parents buying a ZX81 and ZX Spectrum+ for him and his brother in the 1980s. He graduated to using an Amiga 1200 in the early 1990s and spent countless hours learning the insides of the operating system. Now, with 14 years of experience in testing, he works as a Test Manager with an emphasis on test automation, extolling the virtues of Agile using Kanban and behavior-driven development to great effect (test early, test often; fix early, fix often). In his spare time, Colin is part of the editorial team for The MagPi (www.themagpi.com), a community-written magazine for the Raspberry Pi. With several published articles and having reviewed and edited many more, he has built up extensive knowledge on this tiny platform. He can also be found jointly running The MagPi stand at regular Bristol DigiMakers events in the UK, demonstrating things such as a remote control robot arm, a roverbot, and LED display boards, all of which he has programmed in Python on the Raspberry Pi. He currently runs a blog related to all features of the Raspberry Pi at www.rasptut.co.uk.

Prasanna Gautam is an engineer who wears many different hats depending on the occasion. He graduated from Trinity College in 2011 and is currently working as a software engineer at ESPN on cool projects. He has worked on building robots that extinguish fires in firefighting contests and robots that autonomously moved around obstacles. He was involved with the One Laptop Per Child (OLPC) event in Nepal and is fascinated by educational projects that teach programming and logic to kids. In his free time, Prasanna attempts to play the guitar and make sense of music theory.

Sungjin Han likes to ride a bicycle and loves to tinker around on the dark terminal; he also enjoys newly released gadgets and technologies. Now, he is working for a startup in South Korea, looking for some more interesting stuff to dive in to.

Claes Jakobsson started his career in the mid-90s and quickly became involved in the open source community, hacking code and organizing stuff in his hometown of Stockholm. Although Perl is his primary focus, he made forays into PostgreSQL, cURL, and other projects. His daytime occupation has been mostly financial systems, but at night, playing with embedded systems, microcontrollers, virtual machines, compilers, and the interest du jour kept the mind at bay. He is a technologist at heart with a mind to share, and he is always eager to see what happens next.

Ian McAlpine was first introduced to computers at his school, to the research machine RML-380Z and his Physics teacher's Compukit UK101. That was followed by a Sinclair ZX81 and then a BBC Micro Model A, which he has to this day. That interest resulted in an MEng in Electronic Systems Engineering from Aston University and an MSc in Information Technology from the University of Liverpool. Ian is currently a senior product owner at SAP. The introduction of the Raspberry Pi rekindled his desire to "tinker", but also provided an opportunity to give back to the community. Consequently, Ian is a very active volunteer working on The MagPi, a monthly magazine for the Raspberry Pi, which you can read online or download for free from www.themagpi.com.