I applied online. The process took 2 weeks. I interviewed at Susquehanna International Group (Dublin, Dublin) in Oct 2023
Interview
First step was OA (1 hour, approx 15 questions spread over two sections. not very difficult in terms of time pressure) - medium difficulty. mainly probability - markov chains, some combinatorics, some logic puzzles. 1 problem on optimization.
Interview questions [1]
Question 1
Expected number of a biased coin tosses until a specific pattern appears
I interviewed at Susquehanna International Group (Philadelphia, PA)
Interview
The first hurdle in SIG’s interview process is an online assessment administered through Mercer | Mettl. It tests knowledge in mathematics, probability, and statistics. The assessment combines puzzles and probability questions, along with topics like expected value, combinatorics, and logic. Overall, it follows the standard quant interview format — probability and statistics are the most critical areas to master before sitting the test.
An online math test testing topics such as probability theory, basic logics and word problems that you need to do in a relatively short time. I was not invited for further interviews
General question such as background and motivation then 2-3 math questions based on probability and expected value. Difficult than OA. But overall, it is managable if you have done a proper review.