Summer Intern, Arthur Glenn Stanton, Architect, Portland, OR, 1931; Architect, National Park Service, Silver Creek Recreational Area, 1936-1939; Draftsman, Roald and Schneider, Architects, Portland, OR, 1939-1941; Designer, Oregon Shipbuilding Corporation, Portland, OR, 1942-1945; Chief Draftsman, Arthur Glenn Stanton, Architect, Portland, OR, 1945-1948; Associate, Arthur Glenn Stanton and Associates, Architects, Portland, OR, 1948-1955; Partner, Stanton, Boles, Maguire and Church, Portland, OR, 1955-1969; Partner, Maguire, Boles and Church, Architects, Portland, OR; Partner, Maguire, Boles and Hoch, Architects, Portland, OR, -1981; Keith Maguire retired from practice at age 72 in 1981.

Graduate, Washington High School, Portland, OR, c. 1927; B.Arch., University of Oregon, Eugene, OR, 1934;

Maguire married Ellen Douty when he was 24 years old in 1933;

Keith and Ellen Douty Maguire had two children, a son and daughter.