I applied through an employee referral. The process took 6 months. I interviewed at Milskil (Williamtown) in Mar 2018
Interview
Mainly word of mouth and personal recommendation. If a current staff members or RAAF pilots can vouch for you or recommend you directly to the headquarters staff then you will have a leg up.
Interview questions [1]
Question 1
Ask for your background and ability to submit evidence of flight experience and qualifications