Joao Azevedo is a Software Engineer currently working at ShiftForward, where he is involved in the development of large-scale systems for the online advertising industry. His interests in computer science usually revolve around artificial intelligence, machine learning, data mining, algorithms, data structures, and programming language theory. He is fond of reading computer science textbooks and science-fiction novels. He makes an effort to keep as much of the code he writes open-source. James Cutajar is a software developer with an interest in scalable, high-performance computing, and distributed algorithms. He is also an author, open source contributor, blogger, and a tech evangelist. When he is not writing software, he is riding his motorbike, surfing, or ?ying light aircraft. He was born in Malta, lived in London for almost a decade, and is now working in Portugal.