[5] Joseph's first major acting role came when she was cast as young Nala in the Broadway musical adaptation The Lion King, at nine years old.

[4][6] Joseph appeared as Madison, an original cast member in Andrew Lloyd Webber's musical adaptation School of Rock.

In 2016, she appeared as Little Inez Stubbs in the NBC musical television special Hairspray Live!, which earned positive reviews.

[7] In November 2017, it was announced Joseph would reprise her role as young Nala in the 2019 remake of The Lion King, directed by Jon Favreau.

Joseph had a starring role as Ruby Lee Emory in the Amazon Prime Video horror drama series Them.