I interviewed at Susquehanna International Group (Bala Cynwyd, PA)
Interview
The process started with a timed online assessment that tested probability, mental math, logic, and some calculus. The questions got harder as the test went on, so time management was important. After that, there was an interview focused on problem solving and explaining my reasoning out loud. They cared less about just getting the answer and more about how I broke down the problem, handled uncertainty, and adjusted when I realized something was wrong.
Interview questions [1]
Question 1
you flip a fair coin until you get HTH. What is the expected number of flips needed?
I interviewed at Susquehanna International Group (Bala Cynwyd, PA)
Interview
The interview process was first a 60 min test and then a 30 min phone interview. I was asked basic behavioral questions for 2 minutes and then 3 problem solving questions.
I interviewed at Susquehanna International Group (Sydney)
Interview
Normal OA, applied and was given access to the OA had like a week to do it, revise probability basics: dice rolls, coin flips, conditional probability etc. No individual question limit, able to bounce between 20 questions for the duration of the hour-long test.