I applied through a recruiter. The process took 3 weeks. I interviewed at Susquehanna International Group in Aug 2021
Interview
The process starts with an online assessment, followed by a 30-minute phone interview. The first two rounds were mostly logic or probability questions. The third round is with a trader.
Got an online math assessment with brain teasers and probability questions immediately after applying. The questions were not too difficult but the time was very limited, so it's important to practice more before you take the test.
Interview questions [1]
Question 1
don't remember the exact questions, but there were some on expected value and a brain teaser of chess-related