After graduating, he worked as a newsreader and reporter with Spirit Radio, East Coast FM, Dublin's Q102 and FM104.
[3][4] In 2015, he won best radio production of the year in news and current affairs in the National Student Media Awards.
[9][10] On 2 July 2024, Meskill was announced as the RTÉ News London correspondent to succeed John Kilraine, just two days ahead of the UK general election.
[11][12] Prior to his appointment, he had worked as part of RTÉ's political staff, reporting from Leinster House and the European Parliament.
[13][14] In November 2024, Meskill was assigned by RTÉ News to report on Sinn Féin leader Mary Lou McDonald for the general election.