I was first screened by a HR recruiter for over a hour. Then I was interview by a panel team. The team included three persons: a hiring manager and two engineers. An engineer asked me: "Do you know motor and drive?". I list a lot types of motors and controls. Then the manager and a engineer said something was surprised me. The manager said and an engineer repeated with disrespected tone: "You can only work on motor and control. Do you do on general work?" I felt they are the rudest I met in interview. They really lacked the interview skills. They asked most questions are big and open like "have you worked on PCB layout", "do you work on FPGA" within a short interview. Between answers and next questions, they could keep silences over a minute. If you try to talk with them next within those silences, the manager said something with impatient. I also thought how difficult to work with them in the environment.