Mark Byrne became Chief Executive of Chime in 2016. He has overall responsibility for the development, strategic direction, management and funding of the organisation, and reports to the voluntary Board of Directors, with whom he works closely. From 2009 to 2016, Mark worked with Focus Ireland — beginning as Finance Director, he was appointed Acting Chief Executive in 2013 and became Property Director in 2015. He qualified as an accountant in 1998 after training with KPMG and spent over 10 years working in senior finance roles in the corporate sector. Read a message from CEO Mark Byrne here.

David Buxonat is the Director of Specialist Services at Chime, with responsibility for all Clinical, Children and Family, Social Work, Young Adults, Day and Residential Services. David has over 25 years of experience working in the non-profit sector leading and developing services. He is an accredited Brain Injury Specialist and has achieved a Level 9 in Non-Profit Leadership and Management, and a Bachelor of Arts in Management Practices, along with IBEC qualifications in Management and a Higher Certificate in Management, Marketing and Business Law.

Brendan Lennon is a qualified teacher and social care worker, with an MBA in Health Services Management. Before joining Chime in 1995, Brendan worked for a number of years in teaching, residential care and community work. His work with Chime started within the Family Support Team, while later he took up the role of Regional Manager; for the past ten years he has held the post of Advocacy, Research and Public Affairs Director. Brendan is fluent in Irish Sign Language (ISL).

Maura O’Leary joined the Chime team in 2000 when the organisation first opened its Killarney resource centre. Before moving to Ireland in 1998, she worked for ten years in New York City for an academic book publisher, leading the charge in production coordination. Progressing through administration roles in Chime, she began working in Human Resources in 2007. Maura holds a BA in Sociology from Mt. St.Mary’s University in Maryland. In May 2018, she completed her Postgraduate Diploma in Public Management from the Institute of Public Administration and completed her Masters in Spring 2019. Maura has completed ISL Level I, Level II and FETAC Level III.

Michael is a qualified management accountant (CIMA) and also has an MBA. He has over 15 years’ experience working in finance across both the private and not for profit sectors, having just completed 3 years in a large Irish Charity. 

Outside of work he is a massive sports fan, and this year completed his third Dublin marathon.