When he was ten years old, he went to the United States of America to study at the Performing Arts School in Philadelphia.

[1][2] In 1988, he recorded as a sideman with Greg Osby, then worked as a member of the band Horizon led by Bobby Watson.

He has also worked with Herbie Mann, Paquito D'Rivera, Bobby Hutcherson, Jerry Gonzalez, John Patitucci, Arturo Sandoval, Manny Oquendo, and Don Byron.

Simon recorded Beauty Within (AudioQuest, 1994), his first album as a bandleader, with Horacio Hernández and bass guitarist Anthony Jackson.

He has taught at the New School for Jazz and Contemporary Music in New York City and has been artist in residence at Western Michigan University.