I applied through other source. The process took 1 day. I interviewed at Jump Trading (Chicago, IL) in Feb 2012
Interview
I was told the company is very selective. They only hire about 4 people a year!
1. Technical phone interview. I am most familiar with C/C++, so I got programming questions on C/C++
2. On-site interview. You are invited to Chicago, their headquarter. Then it took me about one day to finish the interview, including 3 rounds of technical questions.
I applied through a recruiter. I interviewed at Jump Trading
Interview
I applied for the Python role. CV Screen, OA, First Round interview, then I believe an onsite with 3 separate interviews. I actually did OA in the previous year and they shortlisted me for the future so I went straight to first round interview.
Interview questions [1]
Question 1
Given two lists of tuples representing time series data, merge them to form 1 large time series represented as a list of tuples
I had an face-to-face HR Interview after being contacted through email by someone from the London Office. I was told I would continue with the application process in a few months, when they'll get back to me. I never heard from them again.
Interview questions [1]
Question 1
They asked me about my projects, relevant experience and strengths.
I applied for Python position. Structure looked similar to what people already described. Interview questions seemed quite random, but mostly leetcode type. Requirements which were mentioned on the job posting and things mentioned by recruiter to brush up on were only missleading, nothing from that was covered during the actual interviews.