What is a behavioral interview?

You have passed the coding round. The next interviewer opens with "Tell me about a time you disagreed with a teammate." There is no whiteboard and no problem to solve. This is the behavioral interview, and most engineers arrive at it with no preparation at all.

What it is

A behavioral interview is a round where the interviewer asks about things you have already done, rather than problems you might solve. The questions almost always start the same way. "Tell me about a time when..." or "Describe a situation where..."

The idea behind it is simple