I applied online. The process took 2 weeks. I interviewed at Optiver
Interview
Applied online, did a numerical test of fairly simple 80 mental math multiple choice questions, had a basic behavioral interview, then a technical interview. Waiting on the on site interview.
Extremely hard process, lots of preparation beforehand. Enjoyed the process though, very much challenging. There are many internet platforms that allow you to prepare if interested. Believe in your self when doing it, it can get hard at some points.
Interview questions [1]
Question 1
Test process: 5 parts (Numerical, attitude, probability games, neurological games, sequences).
I applied online. I interviewed at Optiver (Amsterdam)
Interview
Online Assessment -> HR Interview -> Two Technical Interview -> Assessment Centre It was relatively difficult but was interesting, I am currently at the second technical interview stage now. Interviewers are nice but they will ask a lot of extension questions to keep you on your feet.
5 tests, took around 5 hours. quite difficult but some personality ones / games. behaviour interview which was nice, they showed a genuine interest in your experiences and not just a set of predefined questions