One of the most significant chapters of de Silva’s career involves his work with international non-governmental organizations (INGOs). He has frequently been associated with , a global organization dedicated to advancing children's rights and equality for girls. In his leadership roles, de Silva was instrumental in:
For many years, he served as the for the journal Art History , a leading publication in the field. In this role, he was frequently cited as the primary point of contact for the journal’s daily operations, working alongside notable figures like Fintan Cullen and Joy White to bring complex scholarly research to life. The Role of an Editorial Coordinator prasannajit de silva