First interaction with Zendesk: I was lowballed by the recruiter; they tried to offer me $20,000 less per annum than what I was earning at my then-job. I politely declined.

Second interaction: I was grilled by the interviewer about contracts I had taken and why I had moved about. Then, when I asked what the turnover for the team they wanted me for was, I was told, "That's confidential information." I declined again.

Third interaction: The PM gave me a look at the start of the interview that strongly felt like, "We don't hire people your age." I was then given a tech test that had nothing to do with the role. They were hiring for a microservice/HTTP developer, but the task was for a CLI app. (Melbourne is unimaginative; they all use the 'test' someone from the REA group thought was brilliant a decade ago.) There was one interesting piece in the test, dealing with some badly formed JSON efficiently.

See the "interview process" above.