Sean is a retired senior college lecturer (LYIT) 1989-2000.

After employment as an Executive Officer in the ESB (1954-1966) he took up a position as Company Secretary in the publicly quoted company, Milford (Donegal) Bakery & Flour Mills Ltd in 1967 and remained there until 1989, retiring as Deputy Managing Director of the company and its subsidiaries.

Appointed to the Board of Letterkenny Theatre Management Company Ltd on its incorporation in 1999, he served as Chairman for the following fifteen years as the Board managed the successful launch and development of the highly acclaimed An Grianán Theatre.

He has been deeply involved in the amateur theatre movement in the North-West for the last sixty years and is a multi-award winning actor and director at national level.