She is a Life Member of the Bar Association of Sri Lanka. She is also a Life Member of Colombo Law Society and a Member of the Executive Committee of Women Lawyers Association. Charmaine served two terms ( 2006-2009 and 2012-2015) as a Commission Member of the National Police Commission of Sri Lanka.She is an Advisor of Sanasumata Maga (Way To Comfort) NGO in Sri Lanka and a Senate Member of the United Nations University For Global Peace.