Born in Lifford, Ireland, Gethins started his professional career with Ross County in the Scottish Football League before returning to his native Ireland in 2005 after a loan spell with Stirling Albion.

Gethins played for Finn Harps in the League of Ireland, with a brief loan spell at Galway United,[1] before returning to Scottish football in 2010 with Peterhead.

[2] He signed for Nairn County in 2011 and was voted Highland League Player of the Year and top scorer for 2012–13.

[4] At the end of the 2020–21 season, Gethins was released from Formartine and rejoined previous club Nairn County on a one-year contract.

[5] On 23 October 2023, Nairn County released a statement which confirmed that Gethins had left the club to take over as new manager of Clachnacuddin.