Draftsman/Designer, Gillam worked in various architectural firms in Boston, MA, Sydney, NSW, Australia, London, UK, and San Francisco, CA. Partner, Backen Gillam Architects, Sausalito, CA, 1996-c. 2008; Partner, Backen, Gillam and Kroeger, Architects, Sausalito, CA, and Saint Helena, CA, c. 2009- ;

Visiting Lecturer, University of California, Berkeley (UCB), Department of Architecture, Berkeley, CA;

Licensed Architect in the State of California; Member, American Institute of Architects (AIA); Member, The Architectural Association, London, UK; Member, National Council of Registration Boards (NCARB); Jury Member, American Society of Landscape Architects (ASLA) Design Awards, Northern California Chapter, 2008;

Award of Excellence, American Society of Architectural Perspectivists; Santa Barbara Beautiful Award for Exterior Architecture, for the Canary Hotel, 2009.

B.Arch., Miami University, Oxford, OH; Graduate Diploma, The Architectural Association (AA), London, UK.

Rotch Traveling Scholarship Alternate Prize in Architecture, Boston Society of Architects, Boston, MA. With his Rotch grant, Gillam studied the architecture of Southeast Asia, India, and Western Asia.