His mother is a retired teacher, and his father is the founder of McNeer Company, a structural engineering firm based in Williamston.

[4][5] From 2004 to 2006, he worked at the Office of Legal Policy at the United States Department of Justice, serving in part as a deputy assistant attorney general.

[7][8] In March 2020, he was the Treasury Department official overseeing several programs providing unprecedented financial assistance to the U.S. airline industry during the COVID-19 pandemic.

[9] Following his stint at Treasury, McIntosh joined the Council on Foreign Relations as an adjunct senior fellow for international economics and finance.

Ahn worked as an associate at Wachtell, Lipton, Rosen & Katz and is now a consulting attorney for the firm, specializing in corporate law.