Google

The process was very quick, as I already had another competing offer from Microsoft. The interview was scheduled as soon as I sent my resume through an employee referral, and I received the offer letter very fast.

There were two types of interviews. The first was an online interview. If you passed that, you would then report to Google itself for a face-to-face interview with Google's Chief Management Officer.

5 different interviews. * 4 technical interviews asked questions about data structures and algorithms, including graph traversals and prefix trees. * The last interview was a "goodliness" check, aimed at figuring out if I was a cultural fit.