Canada's not a great place to find flying work right now (I've got a couple mates up there and one's on furlough), you also need Canadian citizenship for most operators, in fact most operators need you to have a Canadian passport as well. Aussies are only eligible for one year working visa's (same for them if they come down this way) so the auld commonwealth doesn't help you out to much. If you've got citizenship then you've still got to do a licence conversion.
Cheers
SW