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The interview process took about 5 hours. First, there were the IQ tests. (e.g., given a stack of pennies, how do you determine if all the pennies can fill this room?) Second, the interviewer presented pre-defined questions with programming errors

Very friendly interviewer. They will help you understand the question. There are 2 interviews. Each is a 45-minute technical coding interview. You will share your screen while coding. They expect you to describe your approach before proceeding.

It was systematic, with a phone interview first and a one-to-one interview next.