Potentially, but your employer will need to justify why your skills are invaluable, and why they cannot find a resident who already lives in Australia to do your job. Your Working Holiday visa may be a good opportunity to get your foot in the door, and make connections within your industry in Australia, which could eventually lead to sponsorship. As this is outside of our area of expertise, we recommend that you speak with an immigration lawyer in Australia for more information on employer sponsored work permits.