Sagara Jayasinghe is a practising architect and a design researcher with a major focus on Cultural Heritage, Colonialism, Missionary Movements and Ecclesiastical Architecture in Sri Lanka. His practice and research have helped preserve numerous colonial heritage facets, especially by documenting and undertaking systematic architectural drawings of church buildings and other liturgical art in Sri Lanka. Over the last decade, Sagara has disseminated knowledge on architecture through several published books, exhibitions, conference papers, public lectures and journal articles on art and architecture in both local and overseas contexts.

Sagara is a Fellow of the Sri Lanka Institute of Architects (SLIA), and he has been elected as Chairman of the Board of Architectural Publication of the SLIA for the sessions 2021-22 and 2022-23. His innate passion for cultural heritage has motivated him to be an active member of the International Council on Monuments and Sites (ICOMOS) Sri Lanka, where he serves in the capacity of Honorary Secretary. Currently, he is a Senior Lecturer of the Department of Integrated Design, University of Moratuwa, Sri Lanka and a doctoral candidate at the Faculty of Humanities, University of Lisbon, Portugal.