I think whiteboard interviews is too much old for 2018.
Today we have so many ways to know the level of knwoledge of a candidate, with a simple test or pair programming already know the level.
The best experience i had in interviews was when the interviewer send me a test and when i finished he call me and ask how and why I come to that result, he tried to understand my logic and how difficult/ease it was for him to understand
The tips I have is:
Hello Gabriel, wonderful comment, thanks! Couldn't agree more!
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