His writing and producing credits include more than 70 films starring such actors as Robert De Niro, Harrison Ford, Sylvester Stallone, Arnold Schwarzenegger, Mel Gibson, Bruce Willis, Gerard Butler, John Travolta, Jason Statham, Chuck Norris, Sir Ben Kingsley, Morgan Freeman, John Cusack, Antonio Banderas, Dolph Lundgren, Jean-Claude Van Damme and Jet Li, among others.

Born and raised in Brazil, Les came to America when he was 15 and graduated from Laguna Beach High School in Southern California.

Les attended the University of Southern California, majoring in business administration, with electives in film.

He has produced multiple hit movies and franchises, including the $275-million worldwide box office hit The Expendables with Stallone, Statham, Jet Li and Mickey Rourke, as well as the $305-million worldwide hit sequel The Expendables 2, The Expendables 3, and London Has Fallen, starring Gerard Butler, Aaron Eckhart and Morgan Freeman.

Les also produced The Hitman's Bodyguard, starring Ryan Reynolds and Samuel L. Jackson, which was #1 at the box office three weekends in a row. He followed that up with "Angel Has Fallen" starring Gerard Butler which also reached number #1 at the box office.

Les is currently in post on Hitman's Bodyguard 2, and Jolt, starring Kate Beckinsale.

Les lives in Sofia, Bulgaria.