The document discusses Graham Weldon and his background working with open source software. It notes that Graham has 12 years of experience as a PHP developer, and is also a developer evangelist and open source contributor involved with projects like CakePHP, CandyCane, Sydney PHP User Group, HTML5 Boilerplate, ThreeJS, and LibGit. It provides details on Graham's educational background, starting his career during his engineering degree and working for various local companies, and how he was later noticed for his open source contributions and offered positions at CakeDC and in Japan.