She has worked within schools, the NHS and third sector organisations as well as in private practice. During her early career, Catherine held various European marketing roles in a global business. Rosemary O'Mahony was a partner with Accenture in Chicago and Paris and specialised in implementing Information Technology applications for global clients. Since her retirement in 2006, she has focused on using her professional experience to help a number of charities in the UK and France. Rosemary graduated with a degree in Mathematics from Trinity College, Dublin.