HK employment visa for Australian citizen

Sede, you should first prepare the required documents including copy of your passport, the completed application form attached with a passport-style photo, and photocopy of proof of academic qualifications and relevant work experience.
Your employer needs to provide those materials including the application form, employment contract, copy of the business registration certificate, copy of the proof of the financial standing, documents with detailed company’s background, and detailed business plan.
After that, submit your application to the embassy of PRC to apply for it.