1st round was a telephonic interview, in which I was asked basic HR questions, and background verification was done. The technical round was scheduled for the next week. The technical round was a telephonic interview, which lasted about an hour. Questions on mathematics (matrices, differential equations, calculus), DSP (IIR and FIR filter, Z-transforms and basics of LTI systems), C programming basics, matlab basics were asked.

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.