Petra Marinić graduated from The Faculty of Medicine at the University of Zagreb in 2017. During her schooling she participated and helped during the organization of CROSS – Croatian Student Summit held at the Faculty of Medicine at the University of Zagreb. She also participated in the work of the college library.
After finishing an internship at the Health Center Zagreb West (Dom zdravlja Zagreb Zapad) and passing the state exam she started working as a GP at the Zagreb County Health Center (Dom zdravlja Zagrebačke županije).
During her work in several general practitioner’s offices she gained experience working in general medicine.