I applied online and received an email the next day about setting up a phone interview. The first one was mostly mental math and was average. They contacted me after about a week to set up a second interview, which had more probability and expected value questions that required more thought. After about a week or so, they contacted me again for a third interview, which lasted about an hour and was a really interesting question that was more related to their work. The interviewers were all really nice.
Interview questions [1]
Question 1
The questions all tested your critical thinking abilities, and the most difficult one was probably the 3rd interview.
Initial application and online assessment. Had a first round behavioral interview where they asked me about myself, my experiences, and a couple of brain teasers. The interviewer was very nice.
Phone interviews (at least 3) - questions were of mixed difficulty (some pretty hard) but the interviewers were friendly and they gave helpful hints. Kind of fun - review probability and game-type questions.
I applied online. I interviewed at Jane Street (New York, NY)
Interview
I first applied in google form answer basic questions about me and with that I had to upload my resume and transcript. I don't remember after how long I got an interview time to choose and did my first round of interview.