Des graduated from the University of Ulster with an honours degree in Business Studies in 1977. He trained in the Audit department of Cooper & Lybrand (now PwC) from 1977 to 1981 when he gained his qualification as a Chartered Accountant. He continued in employment with Cooper & Lybrand in Omagh from 1981 to 1989 rising to the position of Manager. Des left in 1989 to set up an accounting practice with Mr. Brendan Dolan.

Des has extensive experience in all aspects of accounting services on a wide range of clients both in Northern Ireland and the Republic of Ireland. He has been involved with statutory audits for commercial businesses, sports and social clubs, charitable organisations and professional practices such as solicitors for more than 30 years. He has always taken a hands on approach with his clients, advising them on their regulatory and other responsibilities and how best to discharge their duties when the need arises.

Des sits on the Board of several of his voluntary/charitable clients giving them advice when necessary on financial and other related matters based on his long years of experience. He also sits on the Committee of various local youth and sports groups in a voluntary capacity.