Design Team Member, LMN Architects, Seattle, WA, 10/1995-03/1996; Project Architect, Hughes Studio Architects, Seattle, WA, 01/2000-12/2002; Partner, Knowles PS Architecture + Interior Design, Mercer Island, WA.

Knowles operated Knowles PS Architecture and Interior Design with his wife, Colleen Knowles, an Interior Designer.

Project Architect, Sandler Architects, Seattle, 09/1996 - 10/1998

B.Arch., Washington State University, Pullman, WA, 1992;