 Samaranayake served the Council for Information Technology (CINTEC), the apex National agency for IT in Sri Lanka as its chairman for a period of 12 years.In the field of IT he has pioneered work on IT Policy, Legal Infrastructure, EDI/E-Commerce, Security, Internet Technology, Computer Awareness and IT Education.In 2004 Prof. Samaranayake became the chairman of the Information and Communication Technology Agency (ICTA) the government agency governing the ICT in Sri Lanka, he held the post till his death in 2007.