He was previously Gaelic Games Correspondent for RTÉ Television News, the first person to hold this role.
[1] Mullin has worked for several local and national publications, including as one of the first journalists with both The Athlone Voice and the Irish Daily Mail.
[3] A career change of mind prompted him to take the Higher Diploma in Applied Communications at NUIG around 2001.
[1][3] Mullin began working for the RTÉ News Sports Unit in October 2006.
[1] He received the ESB National Media Award for Provincial/Regional Sport Print in 2004 for covering Westmeath's first Leinster Senior Football Championship.