RMA Technologies interview questions

I received a random phone call around 6pm with no prior notice. I was asked to have an unscheduled interview and agreed. The interview consisted of mostly standard questions. Toward the end of the interview, the CEO stated the position paid only $20 per hour (no salary was posted for the job publicly). I was told I would be receiving a second in person interview and never heard back.

Interview was with the CEO of the company. Waited for 1 hour in front of the receptionist. Finally met the CEO, he did the standard interview process and handed me a paper with some logical questions and test material. He called me the next day for practical stuff. Came the next day at around 3:00 pm and he kept me there for about 4 hours doing some of his work for free. I did some schematic design and he micromanaged me every single step of the way. He also went over to some of the other workers there and told them how they messed up some of the work. His micro management was unjustified and his computer folder management was garbage. He trashed on the past engineers and halfway through the interview I realized I will not work for this guy in my next 10 lifetimes, let alone for a few months. I felt bad for the others working there, this CEO is smart but very dellusional.