CV Shortlisting, GD then Personal Interview. Your PI depended upon the availability for the different different roles. There are two rounds of interview : technical and then HR round is held.

GD+Techincal+HR. in GD it was basic day to day topics. for Technical interview mostly from Resume and internships and even projects. In HR round general HR questions. Mostly is on a global basis so most get interviewed according to JD selected and the resume alignment with it.