I applied through college or university. The process took 3 weeks. I interviewed at Susquehanna International Group in Oct 2017
Interview
First step was a phone interview with a recruiter that mostly talked about my past experiences and why I am interested in SIG. The recruiter also asks if you are familiar with a bunch of CS topics, and I think this would affect the questions you are asked in the next step.
Second step was a technical phone interview with an engineer. Most of it was general technical problems about things listed on your resume. I have an EE background, so most of my questions were about low level programming such as caching, memory, etc. The only programming problem asked was how to implement fibonnaci.
I did not get past the 2nd step. I believe the 3rd step would have been the final onsite interview. I thought I did well on the interview, but I guess not. Sadly, they do not give feedback.
I applied through an employee referral. I interviewed at Susquehanna International Group
Interview
Phone interview at first asked the basic details on interview along with some technical questions like what is class , what is object .
After few weeks they reply saying u there in the next stage or not
I applied online. The process took 2 weeks. I interviewed at Susquehanna International Group (Dublin, Dublin) in Jul 2019
Interview
Initial phone screen with basic HR questions. Next round was a 1 hour telephonic round with one of the engineers in Dublin office. I was asked questions mostly on general concepts like ReST requests, HTTPS vs HTTPS, Encryption, Garbage Collector(Knowing I was a C++ guy, but I answered as I knew about it along with the algorithm used), Memory management in C++, Destructors, Polymorphism, Encapsulation, Inheritance, Access Specifiers, Runtime Polymorphism.
As far as I know, I answered most of them correctly and at times I was stopped from going in depth of a topic like in case of explaining Interfaces(Again I am a C++ guy still was asked questions on background of Java as the interviewer was not familiar with C++).
I would say it was a waste of time for me as the interviewer and myself had different tech stack and. SIG should try to match the interviewer with the skills of the interviewee to access them properly
I was asked to have two tests in whatever language I wanted . I had to do this within two days and I had two hours for two questions like the following
Interview questions [1]
Question 1
The one was if you have a number lets say two 234 and the other 18 you had to concatanate those two as 12834