Quandour began his career working as an assistant producer and later director and producer for the
J. Walter Thompson advertising company in New York. He later worked in marketing at Bristol Myers International. His debut novel
The Skyjack Affair was published in 1970 via the Williams Press, and his second novel
Rupture was released in 1971. Quandour subsequently relocated to Hollywood to pursue screenwriting and producing, working on the
CBS series
Mannix and the
NBC series
Bonanza. In 1974 and 1975, Quandour returned to marketing and consulting in London, Moscow, and Tokyo. Quandour returned to novel writing in the 1990s. He directed,, wrote, and produced the films
Cherkess (2010),
The Prisoner (2012), and
A Facebook Romance (2012). ==Personal life==