Principal, Mark Horton / Architecture.

Designer, Skidmore, Owings and Merrill, San Francisco.
Designer, Backen, Arrigoni, and Ross, Architects, San Francisco.

Harvard University, Graduate School of Design: Master of Architecture with Commendation.
Dartmouth College: AB.

Adjunct Professor, California College of Arts and Crafts.
Lecturer, University of California at Berkeley.
Visiting Design Critic / Lecturer, University of Arkansas,
Boston Architectural Center,
University of North Carolina, Charlotte,
University of Detroit / Mercy,
California Polytechnic State University @ San Luis Obispo.

Co-founder, 2AES : The Art and Architecture Exhibition Space.
Founder, 3A Garage Architecture, a not-for-profit fine arts gallery dedicated to architectural art.

Juror, American Institute of Architects East Bay Chapter, 2005 Design Awards Program.
Juror, American Institute of Architects New Mexico Council, 2005 Design Awards Program.
Member, Harvard University Graduate School of Design Alumni Council, 2001 - 2005.
Juror, Kirby Ward Fitzpatrick Prize 2004, Architectural Foundation of San Francisco.
Juror, American Institute of Architects California Council, 2004 Design Awards Program.
Member, San Francisco Museum of Modern Art, Architecture and Design Accessions Sub-Committee, 2003 - Present.
Member of Selection Committee, Center for the History of the Computer Museum, 2001.
Aga Khan Fellowship, awarded grant to travel to Republic of Mali, West Africa, to document indigenous architecture.