Prior to joining ADF International, Roska completed a one-year internship at Lawyers Without Borders in Washington, DC. This internship led her to pursue a Master of Advanced Studies in Transitional Justice, Human Rights, and the Rule of Law at the Geneva Academy of International Humanitarian Law and Human Rights, a daughter institute of the Graduate Institute of International and Developmental Studies. 

Roska earned her LL.B at the University of Basel. During her studies, she interned with various human rights organizations, such as the Global Network for Public Interest Law.