Valdez began his career in national commercials for Coca-Cola, McDonald's, Six Flags, Verizon Communications, and Toys "R" Us.

Valdez has appeared in recurring roles on television shows including ER, Veronica Mars, Drake & Josh and guest starring roles on The Closer, NCIS, 24, CSI: NY, JAG, The Shield, CSI: Miami, Without a Trace, That's So Raven, Medical Investigation, Boston Public and One on One.

Additionally, Jeremy starred in Junkyard Saints, a film which was featured on the PBS series Independent Lens.

He also played the role of Adan in the film, Blaze You Out, directed by Mateo Frazier and Diego Joaquin Lopez in 2013.

La Mission stars Valdez, alongside Benjamin Bratt, and was featured at the 2009 Sundance Film Festival.