First there was a long OA of about 3hours. Then, there was a zoom interview on the card betting game with the recruiter. I didn't make it to the next round.
OA mainly consisted of many different numerical games such as using 4 operations and numbers to get 24. Took quite long. Also some probability questions regarding standard topics relating to expected value, variance etc.
Very smooth, the HR just asked me why Optiver, why quant, what is your strength and weakness, what is the career plan in the next 5 years, but I did not answer very perfect
The first section was the online assessment which wasnt too bad, and the next part was a scheduled face to face behavioural interview. Still waiting to see if i passed that stage of recruitment