Apprentice, Mother Earth News Magazine, c. 1979; Architect, W.C. Muchow and Partners, Architects, Denver, CO, c. 1980; Partner, Roth + Sheppard Architects, Denver, CO, 1983-present.

Describing Sheppard's professional service and teaching, the Roth + Sheppard Architects web site stated: "Sheppard alone has served on 25 design award juries, seven design review committees and has been the Design Coordinator for the Third Year Environmental Design Program at the University of Colorado-Boulder. He has been a guest lecturer and juror at the University of Colorado, Denver [UCD] and Boulder, Oklahoma State University, Georgia Institute of Technology and has lectured at UCD’s School of Business, Denver’s Culinary Art Institute and the Museum Store Association’s 2010 national conference. Sheppard’s drawings and projects have also been published in the McGraw Hill Press book, Composite Drawing, Techniques for Architectural Presentation, and are part of the Denver Art Museum’s permanent collection." (See "Firm Profile,"Accessed 04/06/2011.) Sheppard's first teaching job was a teaching honorarium at his alma mater, Georgia Tech.

M.Arch., Georgia Institute of Technology (Georgia Tech), Atlanta, GA, 1978;