Alma Diaconu was born in Timisoara in 1998. In 2018 she graduated from the Freie Waldorf School in Bonn, Germany. She studied acting at the Faculty of Theater and Film of Babeș-Bolyai University in Cluj-Napoca and graduated from the program directed by Ionuț Caras and Mara Opriș.

Since 2022 she is a member of the ensemble of the German State Theatre Timisoara, where she made her debut as Anja in Chekhov's "Cherry Orchard", directed by Volker Schmidt. She can also be seen in other performances: in "Tschick. Why We Took the Car", in the stage version by Robert Koall of the novel of the same name by Wolfgang Herrndorf, directed by Irisz Kovacs; in "A Midsummer Night's Dream" adapted from the works of William Shakespeare, directed by Kristóf Szabó; and in "Lysistrata 3.0" adapted from the works of Aristophanes, directed by Niky Wolcz, as Thesmophoria.