She graduated from the K. Lipiński Academy of Music in Wrocław, where she studied solo singing under Agata Młynarska-Klonowska.
Joanna Zawartko made her debut in 2013, in the title role of the concert performance of Rusalka by Dvořák at the Lower Silesian Philharmonic. A year later she began her cooperation with the Wrocław Opera in the role of Desdemona in Otello by Verdi. Her repertoire includes the roles of Tatyana in Eugene Onegin by Tchaikovsky, the title role in Halka by Moniuszko, Micaëla in Carmen by Bizet, Zemfira in Aleko by Rachmaninoff, Amelia in Simon Boccanegra by Verdi, Ortlinde in The Valkyrie by Wagner, and Roxana in King Roger by Szymanowski.
She is a prize-winner of international and national competitions, including the International Stanisław Moniuszko Vocal Competition (2016, 3rd place and special award), the International Antonín Dvořák Singing Competition in Karlovy Vary (2014, 3rd place and special award), the Halina Halska-Fijałkowska International Vocal Competition in Wrocław (2013, Grand Prix and special award), the Jan, Edward and Józefina Reszke Vocal Competition in Częstochowa (2011, 2nd place and three special awards); the National Vocal Competition in Duszniki--Zdrój (2010, 1st place). She also received a scholarship from the Ministry of Culture and National Heritage, and the Mayor of Wrocław.
Joanna Zawartko participates in international music festivals in Duszniki-Zdrój, Bydgoszcz, Kudowa-Zdrój, Wrocław, Koszyce (Slovakia), and Tallinn (Saaremaa Opera Festival, Estonia). She also performs at venues such as Staatstheater Karlsruhe, Wrocław Opera, Teatr Wielki in Łódź, and philharmonic halls in Jelenia Góra, Kalisz, Koszalin, Lublin, Poznań, Wałbrzych, Katowice, and Košice, as well as the Warsaw Philharmonic and the National Forum of Music.
She has cooperated with conductors such as Marzena Diakun, Jacek Kaspszyk, Ewa Michnik, Marcin Nałęcz-Niesiołowski, Marek Pijarowski, Wojciech Rodek, Zygmunt Rychert, Jerzy Salwarowski, Robertas Šervenikas, Daniele Squeo, Piotr Sułkowski, Jan Ślęk, Johannes Willig, and Tadeusz Wojciechowski.