Jack was a member of Shamrock Rovers' U20 team in 2010, having signed from Crumlin United midway through the season. He made the subs bench for some of Rovers' pre-season games in the build up to 2011 and made his senior debut away to Dundalk in the Leinster Senior Cup on 22 February. Jack left Rovers without having made a league appearance at the end of 2012, and signed for Alan Matthews at Shelbourne for the 2013 season.

Jack played 15 times for Shelbourne, who finished bottom of the league and were relegated. He was a regular under Alan Matthews but was left out of the team when Johnny McDonnell took over as manager. In November 2013 Jack joined Bohemians for the 2014 season in the Premier Division. He played 16 times for Bohemians in the league that season as they finished in seventh place. It would be Jack's only season at Dalymount Park and three days before Christmas in 2014 he was unveiled as a Bray Wanderers player, signing for his old Shels boss, Alan Mathews.

Jack played in the first five games of the 2015 season under Alan Matthews but didn't make an appearance after that run of matches. He left the club in July 2015.