I was recruited as a Lecturer in the Department of Forestry and Environmental Science of the same University in 1995. My Ph.D. was completed on Forest Management in 1998 from the University of Bangor, U.K. In 2004, I was awarded a scholarship to study Remote Sensing and GIS at the GIS Centre of Asian Institute of Technology, University of Thammasat, Thailand. I also won a commonwealth fellowship to conduct further studies in Non-linear Tree Growth Modelling and Remote Sensing in University of Bangor, UK from October 2007 to April, 2008. I was the elected president of the Institute of Biology, Sri Lanka in 2007-08 period. I am a trained Forest Certification Auditor and also the Chairman of the Expert Committee on Forest Certification of Sri Lanka Accreditation Board for Conformity Assessment. I have over 20 national and international publications and many communications to my credit. I also have conducted research both nationally and in collaboration with international bodies in multidisciplinary fields in forestry and environment. Since 2009, I conduct joint researches with Curtin University of Western Australia and I am the pioneer scientist in Walla Patta research in the world. With my expertise, I have contributed to the development of Forestry and Environment Sector in significant manner over last 10 years.