I applied online. The process took 3 weeks. I interviewed at IMC Trading (Saint Louis, MO) in Jan 2017
Interview
Receive an OA first, which focus on logical reasoning. It's 24 mins with 8 sessions. The 7 and 8 sessions are kind of hard, rushed. After pass it, I received second OA and which is 2 hours and 15 mins long with three coding problems.
I applied through college or university. I interviewed at IMC Trading (Chicago, IL)
Interview
for online assessment, there was a question about calculating info from an order book. helps if you know how one works beforehand. only one question and coding preferred in C++ or java.
one technical round and one hr round. technical round was moderately hard. hr round was about your personality, asking about general questions to check if you fit in their workspace.