The way we did it was to send our cv over to companies when we knew when we would arrive in Oz, you will find plenty of work here, as in the UK, but Oz also has it's quiet months. ie last year my hubby did not do a lot of work after Christmas, it started to pick up around the March time, which can be a real drain on your savings!!. I am not sure it works with your visa (sorry) as we have 136 permanent visa.
Where are you heading to in Oz?
Hope this helps
Sarah x