I don't know of any vacancies at Qantaslink Mascot at present.
Canberra nightshift will be up and running shortly, and shouldn't be too difficult. All staff will be doing a Q400 course and PCT. In return they will be bonded by a return of service. This is now the case for all Qantaslink Engineering staff. The job itself doesn't sound too bad. Housing in Canberra is as expensive as in Sydney.
Hope that helps.