I applied through college or university. The process took 3 months. I interviewed at Susquehanna International Group (Bala Cynwyd, PA) in Jan 2016
Interview
First round was a 30 minute HR screen. Second round consisted of an online coding challenge, followed by a phone interview with an engineer about your solution as well as your resume -- also covered database design and data structures. Didn't hear anything for two months, which was followed up by an on-site interview. The on-site was 3 rounds. First an on-site coding challenge (with computer) followed by two hour-long interviews with groups of 2 engineers each (writing code and concepts on whiteboard). The interviewers were all very helpful and supportive. Then finally a tour of SIG facilities to wrap up the day.
Interview questions [1]
Question 1
How would you implement a garbage collector for a programming language?
I applied through a recruiter. I interviewed at Susquehanna International Group (Dublin, Dublin)
Interview
Was pretty easy, 1 round of phone screen interview + 2 - 4 hours of onsite final round. Onsite is scheduled to take place in person in the office.
Interviews were pleasant to talk good and experience was quite good.
I interviewed at Susquehanna International Group in May 2026
Interview
recruiter call - first tech interview, codesignal programming, let u program for 30mins and the interviewer will come back - second tech virtual onsite, OOD + another live coding round, interviewer stays for the duration of OOD and values interaction, live coding is a similar version of prev round - final round onsite team fit, back to back resume deep dive + bq with different engineers / managers. I enjoyed talking to all the engineers and they were genuine and helpful
Interview questions [3]
Question 1
movie sorting problem, different genres search by year
I applied online. I interviewed at Susquehanna International Group
Interview
The OA consists of four LeetCode questions, needed to be done within 70 min. Highly recommend revising how to do the int-string conversion in the language you will use. The problems themselves are not hard, but better to have a clear high-level view before you code.