Ján received his Master’s Degree in Psychology from the Faculty of Philosophy of the University of Prešov in Prešov, where he also received his Doctorate of Philosophy. Later he received his specialization in Clinical Psychology at the Slovak Medical University in Bratislava. In 2017, he received a certificate of Certified Psychotherapy work at the Slovak Institute for Psychotherapy Education. Also he completed a two-year certified postgraduate program in Clinical Neuropsychology of Adults at the Neurological Clinic of the Faculty of Medicine of Charles University in Prague.
He started his professional career at Predná hora, where he worked with people with various addictions. He briefly worked in a hospital in Valašské Meziříčí, from where he transferred to the Neurological Clinic of the University Hospital in Martin, where he has been working for more than 10 years, focusing on the diagnosis and treatment of psychological disorders related to neurogenic brain disorders or brain functioning disorders. His research deals with the issue of the relationship between cognitive functions and multiple sclerosis. He also participated as author and co-author in several professional and research-oriented works related to disorders of cognitive functions. He cooperates professionally and educationally with several organizations to support and restore the mental health of patients and their family members when managing chronic diseases. During the COVID-19 pandemic, he psychotherapeutically supported the doctors and medical staff of the University Hospital in Martin. He also provides professional internships for psychology students as well as professional internships for psychologists in clinical psychology specialization training. In psychotherapy and counseling, the focus is on the relationship between thinking, experiencing and acting in the emergence and maintenance of psychological problems. He works with adults as well as children from school age. He consults in Slovak.