Greg is the engineer primarily responsible for deploying and managing macOS machines at Walt Disney Animation Studios, a studio with a long history of family entertainment reaching back to Snow White and the Seven Dwarves and forward to our latest films: "Moana", and the upcoming "Ralph Breaks the Internet: Wreck-it Ralph 2".

Disney Animation has released several Mac management tools developed by Greg as open source. Among those are Munki, a software deployment framework, and Reposado, a platform-agnostic replacement for Apples Software Update service. Greg is also a contributor to the popular AutoPkg tool.

Greg has presented on various aspects of macOS management at Macworld, Apples WWDC, the MacTech Conference, Penn State Mac Admins, Mac Admins and Developers UK, and MacSysAdmin.