having begun as a research assistant for wiros lokh institute at thimbirigasyaya, he was appointed dean of the faculty of management and finance, university of colombo, sri lanka from 2011 to 2014. prior to the appointment, h. d. karunaratne was the invited professor at the faculty of economics, hosei university, tokyo, japan from april 2006 to march 2008. and also he worked as the founder and chief editor of the colombo business journal published by the faculty of management and finance, university of colombo.