I applied through a recruiter. The process took 2 weeks. I interviewed at Citadel (Chicago, IL) in Oct 2018
Interview
Initially contacted by a head hunter. First round was a 20 minute phone call where I was asked mostly high level questions with some stats/data-science questions thrown in. Next I was given an online coding test; I didn't score high enough to earn a final round interview
Very good and helpful, enjoyed how they had a technical aspect as well. The interview was nice and very nice and kinda nice. Extremely nice broski, lowkenuinely a nice experience broskini.
First round discussing work experience and some hypothetical research questions and how I would approach the problems. Highly conversational and chatty. Interviewer was nice and friendly and offered his insight along the way.
It started with an automated coding screen in a language of your choice, which I unfortunately did not get past. I chose Python for the screen, the questions were pretty standard I just wasn't prepared.