He is considered one the important Sri Lanka artists of the Ceylon Society of Arts of the mid 20th century.
[1][2] After completing his schooling, Amarasekera joined H. W. Cave and Company to study commercial art, then worked at the Survey General's Department as a draughtsman for six years from 1907 and finally joined the staff of the Ceylon Technical College, Maradana as a lecturer in fine arts.
[3] He gained the fellowship of the British Empire Exhibition and was awarded the titular honor of Mudaliyar by the Governor of Ceylon in 1924.
Amarasekara was appointed an Officer of the British Empire (OBE) in the 1939 Birthday Honours for his services for the arts in Ceylon.
[4] The Government of Ceylon awarded the titular honor of Gate Mudaliyar in 1952 and appointed him the Chairman of the Fine Arts Committee of the Colombo Plan Exhibition.