I have an australian PR but i have no intentions of going back there to work..

I was working in a listed Australian firm in Malaysia and I would say they are barely able to sustain their Australian offices, so an internal transfer is almost impossible.

Offices in Australia have been closing down, my friend lost her job in a Mining Site (was earning 130k AUD/annum).

If you think you are ok with any jobs in Australia, without the career progression and prospect, go for it! Any jobs can sustain yourself in Australia.
It is a good place to bring up your children

The firm was the biggest engineering firm in the world. 40,000 professionals world wide.

I agree that there is better work life balance, Institutionalized discrimination? wouldn't say it doesn't exist 100%, how good are the chances of you seeing an asian holding top positions in australian firms? very low chances.

but anyway the lifestyle there is good and I will surely consider to go back there again in the future.

yes seek.com is still the best way.

Fill up the cover letter by altering according to the job description and requirements.

If you are already in Aus, you can drop by one of those recruitment agencies, e.g Hays or you can upload your CV to their website for them to populate your information.