Program Officer applicants have rated the interview process at Australian Embassy with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 80% positive. This is according to Glassdoor user ratings.
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Interviewed by supervisor and an interview panel. People were nice and friendly. It took about 60 minutes.
Pleasant experience. I got the job at the end - notified by email.
Preparation could help.