He is known for his role as Dewey Finn on the Nickelodeon's School of Rock, Keefe Chambers on the HBO television series The Righteous Gemstones (2019–present), and for playing Ozzy Osbourne in the film The Dirt.

He is a graduate of Virginia Military Institute where he was a four-year varsity lacrosse player.

In 2014, he was cast as Dewey Finn on the Nickelodeon remake of School of Rock, replacing Jack Black from the original 2003 film.

In 2018, he was cast as Ozzy Osbourne in Netflix's biographical film of Mötley Crüe, The Dirt.

[5] In 2019, Cavalero was cast in HBO comedy The Righteous Gemstones as Keefe Chambers.