Katarzyna has been actively performing on stage since her graduation from the Maastricht Conservatoire in the Summer of 2014. Some of the roles she has portrayed are: Susanna in Le Nozze di Figaro at the SummerFest Opera Festival with Opera Theater Pittsburgh (USA), Carolina in Il matrimonio segreto under director Philip Harnoncourt with Concert Royal (Germany), Lucy in Die Dreigroschenoper with Stichting …Op Locatie (the Netherlands), Prizzi in La Gran Esperanza! with Opera Comique Maastricht (the Netherlands).
Some of Katarzyna's solo performances include: a series of concerts in Melbourne (Australia) with Sonare and Cantus Novesia in 2016, Bach's cantata Jauchzet Gott in allen Landen and Pergolesi's Stabat Mater at the 12th International Summer Festival of Art and Culture in Hel (Poland) in 2012, concerts at the Heerlen Theater (the Netherlands) in the years 2012-2016 including Mozart's Versperae solennes and Requiem, Haydn's Die Schöpfung, and Bach's Matthäuspassion, concerts in Verviers (Belgium) in 2014-2015 including Fauré's Requiem and Händel's The Messiah, concerts in Neuss and Krefeld (Germany) including Bruckner's F-Minor Mass and Bach's G-Minor Mass, etc.
In October 2013 Katarzyna won 2nd place and audience award at the Concours Kasteel Doorwerth vocal competition. In December 2013 she became one of the laureates of the Summerfest Europe International Singing Competition in Verviers, Belgium. In April 2014 Katarzyna won the first prize in the Second International Organ-Vocal Competition in Neuss (Germany) in a duet with organist Christine Moraal. Katarzyna attended various masterclasses to enhance her vocal abilities, e.g.: with Paul Esswood, Claudio Desderi, Charlotte Lehmann, Nelly Miricioiu, Oliver Klöter, Ernst Daniel Smid, etc.