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.
Difficult interview
Application
I interviewed at Jane Street
Interview
Jane Street’s process was fast and intense: OA with puzzles, technical screen on algorithms and systems, then three onsite rounds (math, coding, infra). Interviewers were sharp, emphasizing clear reasoning and precision.
Interview questions [1]
Question 1
Design a real-time system to process millions of trades per second—how would you ensure low latency, fault tolerance, and exactly-once processing?
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.