These styles of multi-round interviews inspired by the FAANG collective started picking up in Australia before the pandemic, but it got to a point where most of my more talented colleagues and I all agreed it just wasn’t worth the time for the salaries being offered. 4 round interviews for a ‘senior’ developer position on $120k? When interviewing my own candidates, I use a 1 hour interview mostly focused on approach…
I don't like having one interview with one interviewer. That can easily result in that interviewer having a bad day or simply being biased and costing someone a job.
And, speaking as somebody who's seen a 4-digit number of interview packets: The multi-interviewer format is far from flawless, too. The capability of groups of humans to collectively fuck up without ever talking to each other is quite impressive.
If you absolutely want to invest more time, at least build a multi-hour interview that has people do their job, in a team environment. Because that's what ultimately will happen.
Don't do multiple rounds of CS trivia.