A graduate of DIT in 1978, he was the co-founder of Duffy Mitchell O’Donoghue Architects (DMOD.ie) in 1989. He is a fellow of the Royal Institute of the Architects of Ireland and is currently Chair of the Practice Committee. With James O’Connor of Moore Rubell Yudell, DMOD won the international competition for the new campus at Grangegorman and he has been centrally involved in many aspects of the project from masterplanning through planning to delivery of the recently completed first phase of the Public Realm project over the last seven years.