I applied online. The process took 4 weeks. I interviewed at TwoSigmas in Feb 2023
Interview
It consists of an online assessment followed by a 1 hour technical interview. If you pass that, then you have another 4 hours of technical interviews. And subsequently, about 2 more behavioral interviews.
I applied online. The process took 1 day. I interviewed at TwoSigmas (New York, NY)
Interview
A combination of basic probability, counting, and elementary stochastic processes questions. I first interviewed with Jane Street soon after I turned 17- I knew more than enough math at that time to do well. Nothing tricky.