Ashwin Pajankar is a Bangalore-based engineer who wears many different hats depending on the occasion. He graduated from IIIT Hyderabad in 2012 with a master of technology degree in computer science and engineering. He has a total of 5 years of experience in the software industry, where he has worked in different domains, such as testing, data warehousing, replication, and automation. He is very well versed in DB concepts, SQL, and scripting with Bash and Python. He has earned professional certifications in products from Oracle, IBM, Informatica, and Teradata. He's also an ISTQB-certified tester.

In his free time, he volunteers for different technical hackathons or social-service activities. He was introduced to the Raspberry Pi in one of the hackathons, and he's been hooked on it ever since. He writes a lot of code in Python, C, C++, and Shell on his Raspberry Pi B+ cluster. He's currently working on creating his own Beowulf cluster of 64 Raspberry Pi 2 models.

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

Werner was a self-employed programmer for some years and mainly worked on Web projects. During this 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 the head of programming at mStage GmbH, an eCommerce company focused on Magento.