You could do worse than contacting recruiting and expressing interest. I have no idea as to future plans, other than the workforce isn't getting any younger (lots of us are 45+) and shall we say the college is going to struggle to keep up with the demand with ab initios. i.e. you might have missed out this time but the chances are there will be further opportunities.
FWIW in Melbourne I work with a number of international en route recruits from the last lot about 7 years ago (several from the UK, several from South Africa & one from New Zealand). There was also one from Iceland but he went home after a couple of years. The situation is similar in Brisbane. Melbourne and Brisbane are the two en route centres FWIW.