I applied through college or university. The process took 2 weeks. I interviewed at Susquehanna International Group (Bala Cynwyd, PA) in Feb 2011
Interview
The interview was very straightforward. They replied promptly to my inquiry and I was given a 30-minute phone interview. For the first half, I was asked very general questions, mostly about why I was interested in SIG. They never asked about my previous work or trading at all. The second half consisted of two probability/logic questions which were pretty straight forward.
Interview questions [1]
Question 1
Five guys, all of different ages enter a bar and take a seat at a round table. What is the probability that they are seated in ascending order of age? (clockwise or counter-clockwise)
I applied online. I interviewed at Susquehanna International Group
Interview
3 rounds of interviews, Two phone, one on site. First one was with a HR, she asked a few easy quant questions and some HR stuff. Massively screwed up the HR Qs but still got 2nd round as I crushed the quant questions.
2nd round much harder. Really tricky game theory and probability questions with a trader, no HR.
3rd round, with head of desk and a HR girl, more game theory, easier than 2nd round. Some HR Qs, they seemed to not be important though.
First round was a phone interview, pretty easy probability questions. Second round was a phone interview. Again, pretty easy probability questions, but I fumbled on the last one. Had three questions the first round, and second round had two questions.
Interview questions [1]
Question 1
All were pretty easy probability questions (coin flips, poker hands etc., you basically had to calculate expected values). The hard part is understanding what bets you would make on certain games.
I applied online. The process took 4 weeks. I interviewed at Susquehanna International Group (Bala Cynwyd, PA) in Dec 2012
Interview
Applied on website - received first-round phone interview within a few weeks. First interview was why trading/why SIG, if I played poker, and probability/math questions for 30 minutes. Very straightforward - what's the expectation of a dice roll, what's the expectation if you get to re-roll, what about a call option on this game. Bayes' formula. Second round was a harder iteration of the first but still straightforward and easy. They will help you if you ask for hints. Final round - flew me out to Philadelphia and put me in a 4-star hotel - all expenses paid. Shadowed two traders to gauge interest in the firm, then an individual interview that is a harder iteration of the first two phone interviews. And a group interview to see how you work in a team environment.
