When the interview was confirmed, I was emailed an oversimplified map. When I arrived I wasn't confident on which door I should enter so I called the interviewer to make sure I had the right door but he didn't answer so I was sitting outside for about 10 minutes. When he came outside to let me in he said "Didn't they give you a map?". Great first impression. When we went inside we sat down and had my resume in front of me and said "Go through your resume." I went through it with him and when I was finished, he said "So *current role* is the only relevant experience you had out of all of that okay". He then walked me through the facility and gave a tour, and we returned to the interview room and had me sit at another chair. He then very rudely asked me to do some tasks to see if I knew what I was doing. These were tools I've used before, but only for a certification and haven't used them in years (the job posting was somewhat misleading and didn't expect most of the job to be this skillset). He noticed I was having some trouble and said "Didn't you say you knew how to do this?". After the interview he started to walk me out and as I started to thank him for the interview he cut me off after one or two words and said "Ok thanks." and closed the door on me. I obviously didn't get an offer, and definitely wouldn't have accepted even if I got one. The interviewer was extremely unprofessional and rude, was disinterested the entire interview, and was constantly looking at me like he wanted to kill me. You couldn't pay me six figures to work under that guy.