This is Cobhams Line Pilot minimum requirements page.
Cobham (Australia) Recruitment: Attention
Im not too sure about other smaller operators.However, possibly smaller, TOLL is also a well known freighter company. I looks as though they're operated by Jetcraft aviation;
Jetcraft Aviation
Im not sure how many hours you have, but both seem to require high hour pilots. I guess it cant hurt to apply anyways.
I hope that helps.