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Galloway was one of three Melbourne Victory summer signings of 2013, along with Francesco Stella and Jesse Makarounas. He debuted in the Melbourne derby against crosstown rivals Melbourne Heart on 2 February 2013, a game in which they won 2-1, with goals from Archie Thompson and Mark Milligan. Galloway scored his first goal for the club in a loss to Wellington Phoenix on 2 March 2015.
On 19 October 2016, Galloway left Melbourne Victory after failing to secure regular game time at the club and joined Central Coast Mariners. He made his first appearance for the club as a substitute in a loss to Brisbane Roar three days later.
In May 2017, the Mariners allowed Galloway to travel to the Netherlands for a trial with Willem II. Three days later, the Mariners announced that Galloway would be leaving the club, although this was said not to be directly related to his Dutch trial.
Despite trialing in the Netherlands, on 29 June 2017, Galloway joined Wellington Phoenix on a one-year contract following Rado Vidošić and Darije Kalezić convincing him it would be the best place for him to develop his game.