Did a phone interview with one of lifesize engineers, the interview went well. The on-site interview was setup, was interviewed by a 4 engineers and the manager. Most of the questions were C/C++ questions OS questions. Got a reply from the recruiter that I wasn't selected for the position. They never paid for the incidental expense for the the on-site interview.

They first have one telephonic interview which which will taken by a principal engineer. If are selected for this then you will be called for F2F, which is conducted on a single day and will have 4-5 rounds. Each round will be taken by one person. Questions depends on the team you are being interviewed. However, expect more of the basics of DS and networking rather than very advanced/complex algorithms.