Three rounds of interview, first was a phone screen, a week later was a phone interview 1 on 1 with the hiring manager and two weeks later was a factory tour followed by a panel interview in person with the hiring managers, other engineers and the VP. Everyone was very professional and the HR and hiring managers were all very good on their jobs. The VP though seemed disinterested in the interview from the very start and barely looked at my resume, and wanted to end the interview after three mundane questions.