Dharmadasa graduated from the University of Peradeniya Sri Lanka, with a Bachelor of Arts degree in Sociology and Philosophy and began his career as a media officer and worked in several government institutions.

It was a turning point in the Sri Lankan independent cinema with its groundbreaking low budget production which brought hope and opened the gates of film making to many young filmmakers.

[11] Dharmadasa authored several fictions in Sinhala language Bitter Lips and the first erotic novel series in Sri Lanka Faculty of sex.

He then introduced this format of screenings as a platform for other indie filmmakers and film lovers to meet informally and share their thoughts and concepts and co-founded Kolamba Talkies.

[15] Dharmadasa counts 5 years of experience in the advertising industry as a Sinhala copywriter and is currently working at 'Bates CHI & Strategic Alliance'[16] as an Associate Creative Director.