Meet the Speakers

Sean Mahon FRIAI is the RIAI President for 2025-2026. 

Seán Mahon served previously as RIAI First Vice-President and chaired the workgroup that developed the RIAI Strategy 2023-2027. Sean has worked across many areas of the RIAI over the last 30 years including education, practice and architecture. He has worked to strengthen the position of the architect within the design team and to bring awareness to the diverse range of skills within the profession.  

He has also served on various boards and committees within the architectural and healthcare sectors in Ireland, including as a former President of the Architectural Association of Ireland (AAI).

Seán is a Registered Architect with over 25 years’ experience in design, planning and development of healthcare facilities. His projects include many of the recent national projects, including the new National Children’s Hospital; the National Maternity Hospital; the National Rehabilitation Hospital (RIAI Award 2021); and the North-West Cancer Centre (RIAI Award 2018). He continues to advise many healthcare providers and the HSE on current projects and strategies.

Seán graduated from the School of Architecture UCD in 1986 and worked with James Stirling in London and Berlin before returning to Dublin in 1990 to work with O’Donnell + Tuomey on cultural projects in Temple Bar. He is a founding Director of O’Connell Mahon Architects in 1998 and has been Managing Director since 2008.