Professor Wessman is currently teaching game design and development at the University of Advancing Technology in Tempe, AZ. In addition to developing and teaching innovative courses, he also acts as the creative director / executive producer on multiple student game projects.

David began his 17 year career in the game industry as a tester at Lucasfilm Games in 1991. Within a year he had joined Lawrence Holland's independent studio and transitioned to mission building and writing on X-Wing. He left Totally Games in 2000 having worked on the entire Star Wars space combat simulator series. The next eight years saw him working as a lead or senior designer on Blood Wake (Stormfront Studios), Army Men: Air Commandos (Check Six Studios), The Chronicles of Riddick: Escape from Butcher Bay (Starbreeze Studios), Saints Row (Volition), Death Jr. 2: Root of Evil (Backbone Entertainment), and Judgmental Shooting Simulator - a training simulator for the Intelligence Community (Destineer). In his last two dev positions he also acted as the audio lead.

David was a founding member of the San Francisco chapter of the IGDA, and has been a frequent speaker at game industry conferences, as well as a guest lecturer at many schools.