Upvote:6
If you're planning to work in Australia, even remotely, a tourism or business visitor visa (subclass 600) is not appropriate. You should be applying for the subclass 400 short stay work visa instead, sponsored by your employer:
https://www.homeaffairs.gov.au/trav/visa-1/400-
This lets you work legally in Australia for up to three months, or in limited circumstances up to 6.
I've applied for these twice for visitors coming to work with my team, and in both cases the process was surprisingly fast and straightforward, with processing times of under a week. Your mileage may vary.