Prasanna Gautam is an engineer who wears many different hats depending on the occasion. He graduated from Trinity College in 2011 with honors in Computer Science and Mathematics. At Trinity, he worked on building robots that extinguished fires in firefighting contests, implemented the JAUS communication protocol in LabView, and worked on architecting robots to work in realtime. He's worked on the Linux Network stack on phones, writing task distribution algorithms to be used on the Open Science Grid, and building Beowulf clusters ranging from 8 to 80 nodes.

Currently, he works as a Software Engineer at ESPN where he still gets to wear his hats. He and Andrew met at NewHaven.io and found they had the same idea with regard to teaching people about Parallel computing by getting them to set up their own clusters on Raspberry Pis. Fortunately, Andrew was already writing the book. In his free time, Prasanna attempts to play the guitar and make sense of music theory.

Sungjin Han loves to play games and tinker with Linux and Ruby. In this sense, the Raspberry Pi was an interesting toy and a powerful tool for him.

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 the primary focus, he forays into PostgreSQL, cURL, and other projects. His daytime occupation has been mostly with financial systems, but at night embedded systems, microcontrollers, virtual machines, and compilers keep his mind sharp. He is a technologist at heart with a sharing mind and is always eager to see what happens next.