Explain the MOSFET physics, Multiplexer topology, logic behind the circuit bash and linux, one technical interview after the exam and one HR interview after you passed the technical exam. Usually takes about 1 day, technical exam in the morning and hr interview afternoon

For technical interview, just basic CMOS and logic gates question. When I applied a few years ago, I had a panel interview wherein there were 2 senior engineers asking questions. They have set of questions but there were times that they asked a follow-up question from my answer. My technical interview lasted around 1-1.5hrs. The duration of my interview is because of a follow-up question that took several minutes of discussion and another set of follow-up questions.