If Australians are legally obliged to implement back-doors on behalf of the Australian government and not mention it to their employer, why would any of these tech companies want you?
Because Australia is part of the 5 eyes. Any backdoor put in place would have been blessed by some three letter agency from the US already. Any firm that can pay the wages I expect will have a government contract and lawyers on staff who understand how this works.
If Australians are legally obliged to implement back-doors on behalf of the Australian government and not mention it to their employer, why would any of these tech companies want you?
You'd be a massive security liability to them.