Google

The process began with a general phone screen by HR. There were no technical questions, beyond asking, "How many years of experience do you have with...?", and no behavioral questions. Next, an on-site interview followed, consisting of two one-on-on

They interviewed me about common data structures and algorithms. They also set you up with a mentor to get you prepared for the interview. You have to make sure you answer the tech problems efficiently.

The technical interview is a little aggressive, but if you're prepared, you'll do fine. There were deeply technical and specific questions drilling down into earlier areas. Be ready to talk in depth about any technology you mention.