I applied through a recruiter. I interviewed at Platform9 Systems (San Francisco, CA) in Feb 2019
Interview
Engaging and honest. I did not get the offer, but throughout the process I learned a lot of good information about the company and the technology. After the interview, I was given about twenty links to information and told "Learn this and come back in two months".
I would recommend this company to potential candidates.
Interview questions [1]
Question 1
All questions around public cloud vendors, Linux OS, Openstack, Kubernetes