Rob Hansen is a computer programmer and all-round coding champion. Having been lucky enough to attend a school with long-standing engineering traditions, Robert is keen to help other young people to find out about the subject, which isn't taught as a subject in schools. He is a STEM ambassador and has visited schools to give careers and subject talks, teach programming and run workshops.

Robert has written all sorts of things, from software patents to tabletop roleplaying games, but Cool Coding is his first non-fiction book. He is married and lives in Hertfordshire.

Born in the north-east of England and now living in London, Damien Weighill is renowned for his quirky and fun illustrations. He has worked with a wide and international range of clients including Adidas, Ford and The Guardian.