From 1945 to 1946 he served as Acting Head of Consular Section of the Department of External Affairs.
Between 1946 and 1949 he held posts in Europe, serving as First Secretary of the legation in Madrid, then in Paris.
In 1949 he returned to the Department of External Affairs in Ireland, serving as Counsellor, then from 1952 as Chief of Protocol.
[1] In 1955 he was appointed Minister in Buenos Aires, Argentina, later promoted to Assistant Secretary in 1959.
From 1973 until his death in 1975 he was Permanent Representative to the United Nations Office at Geneva.