Massara began working with Brat in 2017 when she landed the role of Rooney Forrester in Chicken Girls, a character she would also play in various series and films for the network such as Attaway Appeal, Chicken Girls: The Movie, Holiday Spectacular, Intern-in-Chief, the lead in Rooney's Last Roll, as well as cameos in Total Eclipse and Stuck. She also hosted Brat Chat alongside Darius Marcell and performed the theme song for Red Ruby, "Run You Down".
Massara released her debut single, "Drama" featuring Stoppa, in 2017, which made it into the top ten chart on Radio Disney. She has been in the top three on Radio Disney multiple times as well as receiving radio play in the United States, Australia, and Canada. Massara has released several singles including "Smoke In My Eyes", "In Your Dreams", "Do Yourself A Favour" and "Apology" featuring 24hrs in 2018 and "That Day" and "I Think We're Alone Now" in 2019. She is currently working on her first EP.