Sirasa has been a project manager and researcher in sustainability and marine conservation for over 3 years, starting out with Greenpeace Southeast Asia, where she developed, directed, organized, and implemented multiple ocean campaign projects. Though not with Greenpeace any longer she is still heavily involved in various marine conservation campaigns and research.

Sirasa graduated with a Bachelor of Business Administration in Hotel Management from the American College of Switzerland, Leysin, in 2006 and then went on to receive a Master of Business Administration in International Business in June of 2007. With an extensive background in businesses and a deep passion for sustainability and marine conservation, she extended her studies into the environment field and is currently a PhD candidate in the Environment, Development and Sustainability Program of Chulalongkorn University, Thailand.