Ewa Sierko is a graduate of the Faculty of Medicine at the Medical Academy in Białystok and a second-degree specialist in the field of oncological radiotherapy. In 2021, she obtained the title of professor of medical sciences and health sciences. She has almost 30 years of professional experience. She is the head of the Radiotherapy Department of the First Oncology Center in Białystok. She also holds the position of a professor at the Oncology Clinic of the Medical University in Białystok. She consults the University Clinical Hospital in Białystok in the field of oncological radiotherapy.