Georgallidis was born on January 30, 1982. He played from 2000 until 2006 for Anorthosis Famagusta before moving to Omonia Nicosia. In the summer of 2012 he moved to Alki Larnaca FC for one year. From the summer of 2013 he played one season for Platanias FC before returning to Omonia Nicosia. He currently plays for AEK Larnaca.
So far, Georgallidis has been capped 66 times by the Cyprus National Football Team.