Career
Born in , County , O'Brien first excelled at Gaelic games during his schooling at Nenagh CBS. He arrived on the inter-county scene at the age of fifteen when he first linked up with the minor teams as a dual player before later joining the under-21 sides. He made his senior football debut during the 2013 championship. At club level O'Brien is a one-time championship medallist in the intermediate grade as a hurler with.
