After earning a computer science degree at Otago, Paul first worked in software development for banking and then realised people were willing to pay him to make computer games for a living. He worked for various companies in California on games such as "Warbreeds" and "Panzer General 3D: Assault" and was senior software engineer for the Playstation 2 game "Robin Hood: Defender of the Crown". Paul moved back to New Zealand in 2003 to focus fulltime on Traygames, an online game service company (co-founded by Paul) having offices in the United States and New Zealand.