He debuted in the mid-1990s as an actor at Henryk Tomaszewski’s Wrocław Mime Theatre. Since 2003 he has mainly been active as a movement director, collaborating over the years with many theatre directors in Poland and abroad. Since 2003 he has been a regular collaborator of Jan Klata, creating stage movement in the majority of that director’s productions and winning an award for his choreography for Klata’s The Wedding at the 43rd Opole Theatre Confrontations (2018).

Since 2010 he has also been active as a stage director. His first original music show, Klaus der Grosse, inspired by the life and work of German performing artist and countertenor Klaus Nomi, received the Grand Prix of the Nurt OFF 31st Stage Song Festival in Wrocław (2010).Prusak often collaborates with the Ludowy Theatre in Cracow, where he has staged productions for children and adult audiences, including Mieczysław Czuma’s Kraków Abecedarium (2016), Back Vault after Ota Pavel’s sport reportages (2018), Pippi after Astrid Lindgren (2020), Doctor Dolittle after Hugh Lofting (2022), and William Shakespeare’s As You Like It (2024). His Back Vault won the 2019 Stanisław Wyspiański Theatre Award.

A regular collaborator of the Wybrzeże Theatre in Gdańsk since 2023, Prusak created stage movement for productions of Wyspiański’s Liberation (dir. Jan Klata, 2023), “Romeo and Juliet” Is Not Dead (dir. Michał Siegoczyński, 2023), and Witold Gombrowicz’s Ivona, Princess of Burgundy (dir. Adam Orzechowski, 2024). On the same stage, he also directed a children’s spectacle (aGrimm brothers adaptation) titled The Golden Key (2023).

His collaborations with Mariusz Treliński (since 2022) include choreographies for Treliński’s operatic productions of Mussorgsky’s Boris Godunov, (Nowy National Theatre, Tokyo), Verdi’s La forza del destino (Teatr Wielki - Polish National Opera, Warsaw 2023; Metropolitan Opera, New York 2024), and Strauss’s Ariadne auf Naxos (Teatr Wielki - Polish National Opera, La Monnaie / De Munt, Brussels 2025).