first round: 30 minutes technical interview by phone questions evenly covered from programming concepts, math, matlab, ... (HR will send you what topics will be asked in the interview) Generally questions are not hard, for example, in the math part, an good example will be: How to calculate an area under a 2D function? second round: 1 day, 3 interviews technical interview + manager interview + HR interview the main part are the technical and manager interview, HR only ask about your visa status when you will be graduated ... and give you a package of company benefits technical interview is a bigger version of phone interview. manager interview will ask a bunch of behavioral questions and explain the position to you.

There were three phases for recruiting procedures. The first stage was a brief and relaxing conversation, the second stage was about technical things and hiring manager asked several questions in the third stage.