He has previously played in the Scottish Football League First Division for Ayr United. Ayr United
Robertson signed for Ayr United on the 19 October 2009, making his first team debut on 24 July 2010 as a substitute in the Scottish Challenge Cup. With his Scottish Second Division debut coming on 7 August 2010 against Brechin City. on the 1st of June 2012 Ross signed a new one-year deal with Ayr, for season 2012–2013, and he will switch roles, from defence/midfield to striker.
Robertson moved on loan to Junior side Glenafton Athletic in February 2013 with a permanent move following in June the same year after his contract at Ayr was not renewed.
He quickly joined fellow Junior side, Hurlford United later that summer.