Well-travelled 33-year-old, who has played in Australia, Greece, Hong Kong and China started his career at Meadowbank and Stenhousemuir before moving to Wollongong Wolves.
Playing for some of the most obscure teams in world football, the former Golden AA, South China AA and PAE Kalamata utility player was snapped up by Chris Turner in a bid to add experience to his squad.
Bullen can play on the right-hand side of defence, in midfield and can even be used as a striker.
In 150 appearances for The Pars, he has scored a respectable 24 goals.