In 2001, he graduated in medicine from the Faculty of Medicine at Comenius University in Bratislava while also working as a student researcher at the Institute of Experimental Oncology (ÚEO) of the Slovak Academy of Sciences (SAV). He specialized in clinical oncology.
From 2001 to 2007, he worked as a physician at the Internal Medicine Clinic of the National Oncology Institute (NOÚ) in Bratislava. In 2006, after completing his doctoral studies at ÚEO SAV and the Faculty of Medicine at Comenius University on the topic "The Potential Application of Probiotics in Oncology," he worked as an assistant professor at the 2nd Oncology Clinic of the Faculty of Medicine, Comenius University, and NOÚ from 2007 to 2011.
In 2011, he was awarded the academic title of Associate Professor at the Faculty of Medicine, Comenius University, and in 2017, he achieved the rank of Professor and Doctor of Sciences. Since 2017, he has been the Head of the 2nd Oncology Clinic of the Faculty of Medicine, Comenius University, and NOÚ.
Between 2008 and 2009, he worked at the University of Texas MD Anderson Cancer Center in Houston, USA, and later returned as a visiting professor from 2014 to 2019. He also serves as the head of the Translational Research Unit, which he helped establish, and is actively involved in multiple research projects.
In his research, he was the first to describe a new subtype of circulating tumor cells that cannot be detected using conventional methods. He is also the author of two international patents for detecting circulating tumor cells.
He currently serves as the Chief Expert in Clinical Oncology for the Ministry of Health of the Slovak Republic. He is a member of several scientific and editorial boards and participates in multiple national and international professional societies and organizations. Additionally, he is involved in teaching students at the Oncology Clinic of the Faculty of Medicine, Comenius University.