@Damien1989 - I fly out of YMMB and in the past did some training with General Flying Services, which is now part of OAA/CAE.
Over the years I've met quite a few from this place, including a couple of ex-Swinburne OAA/CAE instructors I've flown with. Also meet and see people around at places like the AeroBar.
My older son runs an A320 Sim business. I have met a couple of groups of Jetstar cadets who have spent time in the sim prior to leaving for England for their A320 Type Ratings.
When the former cadets start at Jetstar they are on "flex contracts", which may mean fewer hours. Some buy time in the sim for extra A320 experience and to polish their skills and procedures.
One of the A320 Sim instructors is a recent Jetstar cadet who is now a First Officer on the A320. He is very happy with how things turned out. His level of professionalism, knowledge and attitude are very impressive.
Back to my earlier post, I don't recall hearing any former Jetstar cadet here on Pprune complaining?