Around the time I was there, hardly anybody had actually started their first job in Darwin itself. It was generally the place for pilots who were approaching 1000TT and were deemed promotable onto twins, by whatever standards the operator decided. Was always worth talking to operators with remote bases though, like Chartair, you'd have practically no chance of a start in Darwin, but you might get a remote gig with a move to Darwin some time later.
No idea what it's like there now, all I know is most of the companies I was familiar with have folded.