Had a 30 minute phone call before being invited to on site. 3 interviewees were called for on site interview, including me. 4 people interviewed each for 1 hour. Each took turn to interview one of the interviewee. Was surprised to see that the interviewers brought interview questions neatly printed and was made to write answers on those sheets. Think this answer sheets will later be used to evaluate all the interviewees. First round was related to C++, System Verilog. Second round was computer architecture in general, a few behavioral questions. Third round was on Static Timing Analysis. Fourth round was digital design.