[4][5] He previously was chief executive of Fingal County Council from 2014 to 2019, and before that worked in Ireland's Department of Public Expenditure and Reform and an international development charity, after a 25-year career with telecom service provider Eircom and its predecessors.
[6][13] From 2010 to 2011, he was head of corporate affairs with international development charity Trócaire, where he worked on an agenda to strengthen the governance of the organisation and on the improvements in HR, finance, risk management and communications.
[14] His big project was to secure a saving of €1 billion in the second round of public service pay cuts, leading to the Haddington Road Agreement, a difficult proposition as ASTI rejected its findings.
[16] Reid tweeted on Twitter that he left his position as Chief Executive of Fingal County Council on the same day he was appointed Director-General at the HSE.
[17][18] On 27 June 2022, Reid announced that he would be stepping down from his position as Director-General of the Health Service Executive at the end of the year "to spend time with his family".