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The whole process was smooth. Every interviewer was very kind. You will not feel so nervous. Even if you feel nervous at first, you'll feel much better as the process goes on.

The process begins with an initial call with an HR representative, followed by a phone screen with an engineer. During the phone screen, you are expected to solve two 15-20 minute programming puzzles (though in my experience, only one was presented).

Applied at a conference. Was selected for a phone screen. The engineer called me on my cell phone and was using a shared IDE to code. The IDE had a compiler and could execute code.