William has been working as a chartered physiotherapist since graduating from University College Dublin in 2016. Since then, he has been working in private practices in Dublin before returning to his native Kilkenny to work in Southeastern Physiotherapy in 2021.

Outside of his regular clinic work, he has been involved as part of the medical team for inter-county football and hurling teams in Kilkenny, Laois and Offaly along with club teams in Kilkenny.

Prior to his career in physiotherapy, he studied Sport & Exercise Sciences in University of Limerick, which ultimately led to a role with Munster Rugby as a strength & conditioning coach with the first team from 2011-2013.

Alongside his experience of working with professional and high-level amateur athletes, he has a strong interest in physical activity for health, persistent lower-back pain, and osteoarthritis management.