the first round is video interview, five basic questions including your self introduction, school background and why you are applying for this position. Next round is phone technical interview about an hour. they randomly ask you questions in math, matlab, C/C++/Java programming and your specific area, if you get answers wrong more than 5, they will stop asking and inform you to wait for the next.

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.