After leaving school, Srimath started his career as a novice announcer at Sri Lanka Broadcasting Corporation and has been trained by many qualified media personnel such as H. M. Gunasekera, Cyril Rajapakse, Lalith S. Maithreepala and Palitha Perera. His son is Sandiv Liyanage.
Radio
Later he went on handling many programmes such as Wasantha Sandella, Saraswathie Mandapaya etc. with Sri Lanka Broadcasting Corporation.
Television
Srimath has been a Television presenter for many programmes such as Ayubowan, Subha Udesanak, Eheta Kanata and Gee Hatha on Sri Lanka Rupavahini Corporation and Kalarasanga, Komala Reka, and Suraksha Sandella on ITN, Sawanata Geemadu on TNL TV, Alakamandawa on MTV Channel.
Film acting & Teledramas
Liyanage has acted in many movies such as Rajya Sevaya Pinisai, Kiri Kadulu, Sonduru Dadabima, Ma Go Di Go Di, Paya Enna Hiru Se, Hadawatha Mal Yayai, Piyambanna Asai, Asal Wesiyo, Panchayudha and Senehebara Dolly.[5] Few of his teledrama castings were with Hima Keta Malaya and Rakawaranaya.
Dubbing
He is also a dubbing artiste for in Praveena, (Rishab Balaji) Harry Potter, The Lord of the Ring, Spirit and Bay Watch programmes.[6]
Book & Lyrics
Few of Srimath's publications are Muhunata Muhuna, Peeli Panina Naharawel, a collection of lyrics and poems such as Tsunami Sapaya, Patikiriya, Panhindaka Sanhinda and a story book for children named Raththaran Amma.[7]
Katahanda Media Foundation
Srimath is also the Founder and owner of Katahanda Media Foundation that trains media personalities.[8]