Chatham Financial Quantitative Analyst Interview Questions
& Process

First I had a chat with a recruiter. Then I had a one hour interview with the head of the quant team and another quant. This was mainly focused on interest level and details of my career path up until then. We also talked through one brain teaser during this initial phone call. After the initial one hour phone interview they brought me in for an (almost) all day interview. This consisted of 5 or 6, 2 on 1 sessions. We discussed everything from my CV to my career goals and did several brain teasers.

I applied online and then had a phone interview with a quant, followed by a Skype interview. They wanted me to explain my research in simple terms, which is important. I also got a Markov chain problem. I was invited back for an onsite interview the following week. The atmosphere there seemed pretty relaxed and friendly. I had a full day of interviews, meeting about 7-8 people. A big part of the interview is being ready to explain your research in super simple language; I didn't prepare for this well and think I might have confused some interviewers. The technical questions covered typical stuff in probability, brain teasers, linear algebra, etc. The people there are fun and friendly. If you're prepared and show you're interested, they're not too tough.

I heard back a day after applying. We had a phone interview, then a Skype interview. It wasn't too intense, pretty chill. They said I'd have an onsite next, but then HR went quiet for a week. They scheduled another Skype call to check my math skills. My background is in engineering, not math PhD level, so I think that's why I didn't get it. They should have figured that out before the first interview, seems like a waste of time for everyone.