He has obtained his BSc (Engineering) degree from University of Moratuwa in 1994; subsequently obtained Masters Degree in the field of Textile Studies and MBA in Management of Technology. He is an experienced Cleaner Production auditor and an Energy auditor. He is a competent Lead Auditor in ISO 14001 Environmental Management System, ISO 9001 Quality Management System, OHSAS 18001 Occupational Health and Safety Management System and ISO 50001 Energy Management System. He is in the panel of Assessors for assessing Certification bodies for accreditation for ISO 14001EMS under Sri Lanka Accreditation Board. He is a professional with more than 20 years of experience in advisory, capacity building and performance evaluation of the industries at national and international levels. He is a Visiting lecturer to several universities as well as a resource person in several training institutes in Sri Lanka.
He is a member of the Advisory committee of the Accreditation scheme for EMS and QMS certification bodies and a member of the Advisory committee of the accreditation scheme for GHS V/V bodies of Sri Lanka Accreditation Board (SLAB). Eng. Kumarasena also is in National Mirror Committee on Environmental Management Systems, a Member of the Management Systems Certification Committee (ISO 9001, ISO 14001, HACCP& ISO 22000) and a Member of the Advisory Committee on Environment Management Systems Certification Scheme at Sri Lanka Standard Institute (SLSI). He is an advisory board member of Life Cycle Assessment and Design for Sustainability Network (LCADeSnet) and Management Systems Users and Promoters Association of Sri Lanka. He is an Executive Committee member of Lanka Responsible Care Council (LRCC)