Penguin Computing Solutions Architect interview questions

This was an extremely strange interview process. I spoke with 3 individuals regarding this role and was told that the third interview would be the end of the process. However, then I was asked to speak to a fourth individuals and did so. Up to this point 3 of my 4 interviews had gone very well. Penguin then contacted my references, before they were sure they would offer a job. They sent me to interview with a 5th person who became fixated on several short stints on my resume. There was no offer, yet they contacted my references. Quite unprofessional if you ask me.