[1] Her career has been closely linked with the Tricycle Theatre where she has acted numerous times; her credits there include two plays by August Wilson, both directed by Paulette Randall: Two Trains Running and Gem of the Ocean, Walk Hard by Abram Hill, Wine in the Wilderness by Alice Childress, the dramatic reconstruction (by Richard Norton-Taylor) of the inquiry into the murder of Stephen Lawrence, The Colour of Justice, and Lynn Nottage's Fabulation, directed by Indhu Rubasingham.
She has performed in a variety of leading roles at the Almeida Theatre, notably in A Chain Play, Theodore Ward's Big White Fog and Harold Pinter's The Homecoming, both directed by Michael Attenborough, and in 2010, Indhu Rubasingham directed her in Lynn Nottage's Ruined.
In 2011, she returned to the role of Mama Nadi in Charles Randolph-Wright's production of Nottage's Ruined at the Arena Stage in Washington, D.C. That same year, Jules won the Critics' Circle Theatre Award for Best Actress for her turn as Mama Nadi in Ruined.
She made her Broadway debut in 2016 as Tituba in Ivo van Hove's production of The Crucible at the Walter Kerr Theatre,[3] which starred Ciarán Hinds, Sophie Okonedo, and Saoirse Ronan.
[4] In March of 2019, Jules took over the role of Hermione Granger (from Noma Dumezweni) in the Broadway production of Harry Potter and the Cursed Child.