She's the founder of interviewing.io, which is a mock interviewing platform. So I'm guessing her insight comes from looking at all the metrics (e.g. pass rate,

She's the founder of interviewing.io, which is a mock interviewing platform. So I'm guessing her insight comes from looking at all the metrics (e.g. pass rate, strengths/weaknesses of candidates) from the mock interviews hosted on the platform. That being said, I'm sure she has conducted her fair share of interviews.