Petar was born in Croatia, and he studied Molecular biology at the Faculty of Science, University of Zagreb. During his bachelor’s studies in the summer of 2022, he did an internship in the Dikic group, in which he studied the role of ER-phagy in lipid droplet biology. After his bachelor study in 2023, he started Master's program at the University of Zagreb and continues his research in the group of Ivan Dikic as a Master student.