Dever has had supporting roles in the films Short Term 12 (2013), Detroit (2017), Beautiful Boy (2018), Dear Evan Hansen (2021), and Ticket to Paradise (2022).

[6] Starting with the seventh season of the series, Dever transitioned to a recurring role, allowing her to focus on other film and television projects.

[7] Dever's other television credits include Make It or Break It, Modern Family, Private Practice, Party Down, The Mentalist, and Curb Your Enthusiasm.

Dever appeared in the 2014 dark comedy film Laggies, directed by Lynn Shelton, alongside Chloë Grace Moretz and Keira Knightley.

[13][14] In mid 2019, Dever starred in the critically acclaimed teen comedy Booksmart directed by Olivia Wilde, opposite Beanie Feldstein.

[22] In 2020, Dever appeared in the Quibi comedy series Home Movie: The Princess Bride, directed by Jason Reitman, to raise money for World Central Kitchen.

[25] On August 17, 2020, she was cast as Zoe Murphy in Stephen Chbosky's 2021 film adaptation of the Broadway musical Dear Evan Hansen.

[32] Dever played the lead role of disgraced wellness influencer and convicted con artist Belle Gibson, in the biographical Australian miniseries Apple Cider Vinegar.

Her mother played the Alanis Morissette album Jagged Little Pill on car trips in Dallas, and her father taught all of his children to harmonize.

In 2018, they released music for the first time under this name, contributing two cover versions of "You Only Live Twice" and an original track titled "Let You Go" to Reitman's 2018 film Tully at his request.

[citation needed] Also in 2021, as the character Zoe Murphy, Dever contributed vocals to four songs for the soundtrack of the Dear Evan Hansen film adaptation.

[citation needed] In August of 2024, the duo announced that they would change their name from Beulahbelle to Devers and the debut single under the new name, titled "Poison", would be released on September 4th.