Having started his career as a civil engineer, and then moving into structures, Ronan has an excellent knowledge of both areas of engineering. He has a particular interest in healthcare projects, having been involved in a number of major hospital and medical facilities in his career. Examples include Beacon Hospital Sandyford, and the National Forensic Mental Health Facility in Portrane, Co.Dublin. Other significant projects include Crown Square Galway, the National Gallery Historic Wings Refurbishment, Roscommon County Council Offices, Ferrybank Shopping Centre, University of Galway Student Accommodation Phases 1 & 2, and Social Housing PPP Bundle 3.