2 rounds.
First round: with 2 teams members, asking self-intro typical behavior questions followed by 5~10 technical questions, such as VaR, Monte Carlo, Greeks, probability concept, backtesting, stress test...etc. Mostly you explained the concept, no hard math.
Second and the final round: with the Team head. This stage was easier, focus more on motivations, communication skills (no tech questions). The Team head concluded the interview by giving me oral offer at the end.
The entire process was very quick and efficient, spanning only round 1 week from interview invitation to offer from HR.