Salvatore appeared in the 2001 film Donnie Darko, and has guest starred in several television shows, including Judging Amy, That '70s Show, and Still Standing. He is known for his recurring role as Mark Del Figgalo in the Nickelodeon/Family television series Zoey 101 where he appeared in 28 episodes. Salvatore appeared on How I Met Your Mother and had a small role in the Owen Wilson feature Drillbit Taylor.
In the alternate opening and the alternate ending to 13 Going on 30 (2004), Salvatore played young Matt Flamhaff. These alternate clips can be seen on the special features on the DVD. He appeared in an episode of Mind of Mencia and The Secret Life of the American Teenager, and has a recurring role on 10 Things I Hate About You. He also guest starred in the TV show Victorious as the pajelehoocho commercial boy in the episode 'Victori-Yes.' He also worked as the writer's production assistant on shows like Victorious and Sam & Cat.