Vasileios has significant professional experience in the field of Forensic/Clinical Psychology. His research specialisations involve the areas of Developmental Psychopathology, Psychometry and Behavioral Addictions while he serves as an associate academic editor for Frontiers in Psychology and Plos One. He is a member of the Australian Psychological Society (APS) and the APS Clinical College, a registered psychologist endorsed in Clinical Psychology and an accredited supervisor with the Australian Health Practitioner Regulation Authority (AHPRA).
As a scientist practitioner, he is an active member of the European Association of Developmental Psychology (EADP) and the EADP Early Researchers Union, as well as a member of the International Society for the Study of Behavioral Addictions (ISSBA). He maintains continuous research collaboration with the Athena Studies for Resilient Adaptation Research (ASTRA) Team of the University of Athens, the International Gaming Centre of Nottingham Trent University, Professor Gentile from the University of Iowa, Palo Alto University in the US and the Korean Advanced Institute of Science and Technology (KAIST)