Barry Malkin began his career working as an apprentice to Dede Allen on the 1962 film America America. Working on that film he met the editor Aram Avakian, and went on to become his assistant editor on the 1964 film Lilith. He was credited as full editor for the first time on the television series The Patty Duke Show.
Malkin first became connected to Francis Ford Coppola via Avakian. Coppola then hired Malkin to edit his 1969 film The Rain People. From then on, he would edit many of Coppola's films, including The Godfather Part II and The Godfather Part III. He also created The Godfather Saga for American television.
He passed away on April 4, 2019 at age 80, survived by his wife and daughter.