I applied online. The process took 2 weeks. I interviewed at Susquehanna International Group
Interview
The process consisted of a phone screen with HR, a video cover letter, and a second round phone call. The phone screen with HR was positive and lasted around 30 minutes. After that I was asked to record a two minute interview about a technology topic. Then, I had a second round with a team member, who called 40 minutes late for a call that ended up only lasting 15 minutes. I had clearly been rejected before the 2nd phone call, but they wasted my time after asking me to prepare.
Interviewers were not engaged at all, one spent the entire interview on his phone, very unprofessional given the prep for the interview.
Interview was a mix of competency, market knowledge and probably based maths questions
first-round Phone interview; the first time the interviewer canceled the interview very last minute and rescheduled another one. Mostly behavioral questions; some easy probability questions e.g, binomial tree; last 20 minutes; did not really offer a q&a time
The interview process was rather straightforward tho challenging. The first interview, they ask you about yourself and experience. The next interview is a riddle round. They ask you to solve 3 riddles. It was fun but definitely pretty stressful. Come prepared.