1 hour hiring manager interview the first person who actually understands those acronyms on your CV
1.5 hour technical/coding interview, to check you know how to program
1 hour behavioural interview to check if you've ever gotten into a fistfight about database schema design
1 hour chat with your boss's boss's boss, who feels he ought to have a conversation with someone before approving a six-figure paycheck.
This lengthy and bureaucratic process is vital to ensuring prospective hires have the patience needed to get through all the other lengthy and bureaucratic processes their job will entail.
However, parent commentator mentioned wanting to _go deep_, and needed 4-5 hours to do it, indicating that the typical committee pattern is out of alignment with what they were advocating.
Further, your time assessments are too long. You can assess fisticuffs in 10 minutes along with a background check. Technical doesn't have to be 1.5 hours. Also, 90 day probation policies exist to address as well.
(Didn't get an offer, in case you're curious:)
If anyone sees an interesting posting for that team, I'd definitely suggest applying.
And their 2 take-home coding projects reminded me why I love performance optimization.
Or I guess they decided on a "mixture of experts" and put everyone through to multiple "final round" from different domain experts? All of whom are somehow adding value?
I don't think I've ever said this before, but that sounds like a job for a management consultancy.
It's a date, not an interrogation!