Westerman started out as a prop master and
art director. Westerman's experience ranges from television to movie and theater productions. He was an executive in charge of development at Bona Dea Productions, a production executive of The Weissberger Theatre Group, and an assistant to producer
Fred Zollo for one year. In 2000, Westerman left his job at
Disney to found a start-up called RadicalZoo. RadicalZoo was to be a destination for independent filmmakers. RadicalZoo folded in 2003. Westerman joined the staff of
Nickelodeon in 2004 and went on to create sites and applications for the company. Westerman lead the team that created
Nicktropolis the
virtual world. In 2009, Westerman left Nickelodeon to become
Creative Director Worldwide Marketing and Communications for
Mattel. In 2007–2008, Westerman created an
Adobe Air application as an Adobe launch partner. The application was the first game to be created using the air runtime. The game allows users to engage in a
scavenger hunt, collecting
jigsaw puzzle pieces and assemble and solve the puzzle offline in the Air runtime. In 2012 Westerman joined
Guthy-Renker as head of digital creative. In 2015 Westerman joined
Spark Networks as head of creative. ==Personal life==