Google

The first stage is a phone screening. If selected, there will be five on-site coding interviews where you will be expected to write code on a whiteboard. The on-site interview also includes a lunch interview, but that is not counted towards the asses

All day, four different people were doing whiteboard coding interviews. This was in 2015. One interview was about binary logic. One was system design, and this was not whiteboard coding. One was general programming.

I had two back-to-back interviews. The first was easy, while the second was hard. I did not perform well in the second interview. It took about five weeks to get the result.