Career
He has previously represented Northern Ireland at under-21 level Gilfillan began his career with Inverness Caledonian Thistle in 2000, where he made a handful of substitute appearances before a loan spell at Brora Rangers in 2001. He later moved to Gretna, scoring 6 goals in 21 appearances, in a season that saw Gretna promoted to Division Two as Scottish Third Division 2004-2005 champions.
After a short spell at Stranraer and two years with Peterhead, Gilfillan went to Australia to play for Sunshine Coast in the Queensland State League.
He returned to Scotland in December 2008, signing for Annan Athletic. Although he was born in Scotland, Gilfillan"s mother"s family come from Northern Ireland, and he was first called up their under-21 team in 2005.