[4] She worked as a curator of an educational project at the library of the Plomin lecture hall.

[2][4] Assistant to MP Sviatoslav Yurash in the Verkhovna Rada of Ukraine.

[3] At the Association of Azovstal Defenders' Families, she advocates for Ukrainian prisoners of war at the international level.

[3] On 11 May 2022, Yuliia Fedosiuk and Kateryna Prokopenko met with Pope Francis in the Vatican and asked him to help save Ukrainian defenders from Azovstal in Mariupol, Donetsk Oblast.

[6] She spoke in the United States Congress,[7] Stanford University,[8] the Israeli Knesset,[9][10] and at other public events calling for the return of the Mariupol defenders home.