Janaka was born in the Sri Lankan hill capital of Kandy. He came to Brisbane via London, where he spent much of his life. He caught the poetry bug as a medical student in London, and first performed poetry in London at the Stoke Newington International Airport in 2009. Janaka has performed at the Queensland Poetry Festival, Riverbend, and other poetry venues in Brisbane. He has published a collection of poems entitled Kavi. The poems in the collection are based principally in Sri Lanka. He writes for ESPNCricinfo.com in The Cordon. He has worked with Ravikesh Singh, a renowned tabla player, to form Dubla, a poetry and tabla collective. He moonlights as a GP in Brisbane when not performing poetry.