She played McKenzie in the Disney Channel Original Movie, Teen Beach Movie, and its sequel Teen Beach 2, and she appeared in "Phineas and Ferb Musical Cliptastic Countdown Hosted by Kelly Osbourne". Mitchell made a cameo appearance as the operator of a cupcake truck in the Muppisode "Food Fight". She has also made a guest appearance in the Jessie episodes "Jessie's Big Break" and "Jessie: Aloha Holidays with Parker & Joey" as Shaylee Michaels. She will reprise that role for a crossover special with Liv & Maddie's Joey and Parker Rooney. She recently provided the voice of Wendy Darling in the Jake and the Never Land Pirates special Jake and the Never Land Pirates: Battle for the Book. She also voices Jasiri in the American animated television series The Lion Guard.