Miramant is a career pilot: He flew commercial Boeing 767s at Delta Air Lines and has owned and operated a glider ride service on coastal Maine since 2005.

He attended Bedford High School outside of Boston from 1969-1973 and became active politically during the civil rights movement and the Vietnam War.

[3][1] He received his airline transport pilot licence, qualified as a captain on the Boeing 767 and flew for Delta Air Lines.

[2][3][1] He has also owned and operated several small business, including a hotel, restaurants, and a flying service, and worked as a boat captain.

[7][8] As of March 2021, Miramant is a member of the Coastal Caucus[2][9] and a commissioner on the Atlantic States Marine Fisheries Commission.