Sorry, haven't used an architect since buying my house quite a while ago now. But if I were interested in finding one, I would look at houses I liked that were built or extended in recent years, look up the planning applications and find out who the architects were.
For example, if you are in Dun Laoghaire / Rathdown, you could click , type in the road name in the location box and see if you can find a particular house that the design interests you. You can click through Documents --> View Documents --> Plans/Elevations/Sections and normally the details of the architect can be found on the plans.