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    Jane Street Operations and Research Assistant Interview Questions

    2 Interview Reviews

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    Helpful (3)  

    Operations and Research Assistant Interview

    Anonymous Interview Candidate
    No Offer

    Interview

    First Round: Excel task, had to correct values in a big table of trades using either VBA or functions

    Second Round: Telephone interview. Questions involved
    - 1,000,000 minus 1111
    - 17% of 256
    - Today is Friday what is the day in ten years time
    - Expectation when rolling two dice

    Interview Questions

    • The outside of a cube is painted blue. It is then divided into 27 equally sized smaller cubes (like a Rubik's cube). If a smaller cube is selected at random and thrown on the floor what is the probability that all five visible faces are NOT blue?   1 Answer

    Other Interview Reviews for Jane Street

    1. Helpful (2)  

      Operations and Research Assistant Interview

      Anonymous Interview Candidate in London, England
      No Offer
      Positive Experience
      Difficult Interview

      Application

      I applied online. The process took 4+ weeks. I interviewed at Jane Street (London, England) in June 2014.

      Interview

      Applied online and got a reply by mail within 10 days.

      First round : Excel task. Check a series of trades on a spreadsheet.

      Second round : telephone interview (20-30 min) : Same kind of questions as the one you will find on Glassdoor, mostly mental math, brainteasers and probability. No pen or paper.
      - 200,000 minus 222
      - Probability of a 3-3 tie on a 7 game series.
      - Today is Friday what is the day in ten years time
      - The outside of a cube is painted black. It is then divided into 27 equally sized smaller cubes. If a smaller cube is selected at random and thrown on the floor what is the probability that all five visible faces are NOT black?
      - Angle between minute hand and clock hand at 9:30

      Third round : programming task. Write a program to process a text file with trading data and output a file with PnL for each security on the file.

      Fourth round : telephone interview with a trader (1 hour). Problem solving :
      - Two spies have to meet. Each one will arrive at a random time (uniformely distributed) within a 1 hour interval, and stay for 10 minutes. Calculate the probability that the spies actually meet.

      - Three cowboys A, B and C have a truel (like a duel but with 3 people). A has a 1/3 probability of shooting his target. B 1/2 and C 1. Each one will attempt to shoot the cowboy who is still alive with better shooting probability. A starts the shootout, then B and C (if still alive). Calculate the probability that A wins the shootout.

      Fifth round : telephone interview with a trader (1 hour). Problem solving :

      - Design a betting system on a 7 series game beetween two teams A and B (even odds at each game), such as if A wins the series your cumulated gain is exacly £100 and if A looses your cumulated loss is exactly £100.

      Interview Questions

      • Design a betting system on a 7 series game beetween two teams A and B (even odds at each game), such as if A wins the series your cumulated gain is exacly £100 and if A looses your cumulated loss is exactly £100.   3 Answers
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