First is a short personality test. Only 5% of people pass it (the best way is to answer honestly and thoughtfully. Don't overthink and don't try to impress). Then another personality test that's maybe 1.5 to 2 hours. Then if you pass that, you go for an interview that's 4 to 5 people in one day. Each person seemed to have an agenda, a specific tack that they were directed to apply.
But the bottom line is that they are looking for a specific type.