Shada began acting at the age of seven soon after moving to Los Angeles with his family. He was inspired to act by his older brother Zack Shada, who had begun acting himself. Shada initially appeared in commercials. Later on, he began auditioning for voice acting and theatrical performances, taking the advice from a voice over agent. His first live action theatrical role was as Young Kurt Diamond in No Rules. He has since appeared in additional live action and voice acting roles, such as playing Charlie Pace in childhood flashbacks on Lost.
In 2009, Jeremy Shada’s agent approached him with the idea of auditioning for the role of Finn. Both recognized that Zack Shada had been the original voice of Finn in the pilot episode of Adventure Time three years before. After viewing the pilot on YouTube, Shada matched his voice with the voice of Zack Shada in auditions with Adventure Time’s creator Pendleton Ward and the show’s producers, earning him the Finn role. In 2012, Shada joined the cast of Nick Cannon’s sketch-comedy series, Incredible Crew. In June 2012, to promote Incredible Crew’s 2013 premiere, Cartoon Network released a music rap video titled “Running Errands with My Mom” which features Shada performing and rapping the lyric. The video has since generated over one million views.
Because of his acting schedule, Shada was homeschooled. Answering fan questions on his Facebook page, Shada indicated that he graduated from high school early in May 2013.
Jeremy also plays the lead role of Tyler Prendergast on the hilarious “Mr. Student Body President.”
On July 21, 2014, Jeremy Shada announced that he is a member of Los Angeles-based pop punk band Make Out Monday. The band also consists of Jeremy’s brother Zack Shada and friends John Spicer and Seth Renken.