Jagath is a Lecturer at the Art and Archeology University in Sri Lanka and is also a Founding Member & chairman of Theertha International Artist Collective. His received his education in visual arts at the Institute of Aesthetic Studies, University of Kelaniya, Sri Lanka and the American University, Washington
D.C. USA. He has been the main proponent in the ideological shift in the approach to arts in the 1990s now popularly referred to as the ’90s Art Trend’. He has shown his works extensively in Sri Lanka and internationally. Weerasinghe’s diverse interests allowed him to drift his attention to other related fields of art such as conservation of mural paintings. Presently a Professor of Archeology, his interventions in heritage management has been widely recognized. He lives and works in Sri Lanka.