Since joining the Architect of the Capitol (AOC) in 2009, Mr. Thomas J. Carroll has held several positions. He was first hired as Deputy Superintendent for House Office Buildings. In 2011, he became Chief Financial Officer where he was responsible for ensuring sound financial stewardship as well as providing value-added analysis to give insight into the financial implications of program decisions. Mr. Carroll was promoted to Assistant to the Architect for Operations and Services in 2018, and served as Acting Architect of the Capitol from August 2019 through January 2020.

Before his employment with the AOC, Mr. Carroll served in the U.S. Air Force. In 2007, he was assigned as Commander, 11th Civil Engineer Squadron, and was responsible for all facility operations, sustainment and modernization at Bolling Air Force Base, Washington, D.C.

In 2004, Mr. Carroll was assigned to the Pentagon, Office of the Air Force Civil Engineer and promoted to Chief of Environmental Integration Branch, and later Chief of MILCON Program Development Branch responsible for Air Force input to the president's budget submission. In 2002, he served as the Deputy Chief of Mission Support Inspections, Office of the U.S. Air Force in Europe Inspector General in Ramstein Army Base, Germany, after relocating from Rhein-Main Army Base, Germany, where he was the senior civil engineer.

In 2000, he was assigned as Chief of Civil Engineering Resources and Requirements at Spangdahlem Army Base, Germany, ensuring logistical, financial and customer service support to the base facilities engineering organization. Mr. Carroll deployed in 1999 as Commander, 40th Expeditionary Air Base Squadron at Gioia del Colle, Italy, where he provided full-spectrum mission support. In 1998, he served as Chief, Civil Engineer Operating, in Taif, Saudi Arabia, working all engineering design, construction and operational support to the Saudi fighter aircraft program.

In 1997, Mr. Carroll became Branch Chief for Special Programs, Office of the Air Force Material Command Senior Civil Engineer where he worked the command-wide metrics and measures program to improve operational efficiency across 12 Air Force bases. In 1993, he became the Chief of Maintenance Engineering and Chief of Design at Kunsan Army Base, Republic of Korea. In 1991, he was promoted to Executive Officer to the U.S. Air Force Space Command Senior Civil Engineer. Mr. Carroll began his federal career in 1989 as an engineering programmer and design engineer in the U.S. Air Force, Peterson Air Force Base, Colorado.

Mr. Carroll graduated from the University of Vermont with a Bachelor of Science degree in electrical engineering. He earned his commission through the Reserve Officers Training Corp program as a Second Lieutenant in 1988, and entered active duty in January 1989. He holds a Master of Science degree in administration from Central Michigan University.