Mark has more than 32 years practicing architecture in San Francisco, most recently as a principal with Field Paoli. He has focused his career on community design projects, including more than 50 libraries, community centers, recreation centers, and other neighborhood facilities, most of them in the Bay Area. His projects include the Mayfair Community Center and the Almaden Community Center and Library in San Jose; the Belmont Library in Belmont, California; and the Tustin Library in Tustin, California. At ELS, he is currently working on the joint Redwood City Veterans Memorial Senior Center and YMCA of Silicon Valley.

Mark teaches at U.C. Berkeley, where he also heads the summer architectural internship program, and at California Polytechnic State University. He received his bachelor of arts in architecture from Stanford University and his master of architecture from Harvard University.