Ioannis Panagiotis Kaldellis is a certified psychologist and psychotherapist in training, with a Bachelor of Science in the Department of Psychology of the University of Nicosia and postgraduate studies in Clinical and Community Psychology of the University of East London.

He completed his internship at the Toxotis Charitable Foundation in Cyprus, where he worked with a neurodiverse population through courses, psychoeducational programs and creative activities aimed at enhancing abilities and social skills. He then completed a clinical internship at the Open Psychotherapeutic Center of Athens in the role of group therapy coordinator of psychotherapy groups.

He has worked in a Neurodevelopmental Clinic as a psychologist, providing his services in personalized programs of individual psychotherapy sessions. He currently collaborates as a psychologist with the Smart Development Study & Special Therapies Center of Zografou, where he carries out personalized programs of psychotherapeutic and psychoeducational sessions for children and adolescents, while at the same time he is privately active in conducting online psychotherapy sessions and continues his training in the Gestalt psychotherapy approach.