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      Jane Street

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      Junior Quant Trader Interview

      6 July 2025
      Anonymous interview candidate
      London, England
      No offer
      Positive experience
      Difficult interview

      Application

      I applied online. The process took 1 day. I interviewed at Jane Street (London, England) in Apr 2023

      Interview

      Did one interview round, Pretty focused on brainteasers and probability games. A few question asking for optimal strategy of playing a game and how you would approach it. Didnt get through but was important to say how you think about the problem etc.

      Other Junior Quant Trader interview reviews for Jane Street

      Junior Quant Trader Interview

      30 Jan 2025
      Anonymous interview candidate
      New York, NY
      No offer
      Positive experience
      Difficult interview

      Application

      I applied online. The process took 2 weeks. I interviewed at Jane Street (New York, NY) in Sept 2024

      Interview

      Hacker rank, then a 30 min phone call with a trader. He asked probability questions, on the harder side but not impossible. Unfortunately I did make it past this round.

      Interview questions [1]

      Question 1

      Probability and expected value questions
      Answer question

      Junior Quant Trader Interview

      27 Aug 2023
      Anonymous interview candidate
      New York, NY
      No offer
      Positive experience
      Average interview

      Application

      I interviewed at Jane Street (New York, NY)

      Interview

      Interview process was smooth. Interviewers were nice but questions were reasonably difficult. A background in combinatorics and probability would definitely help. Prepare before the interview and good luck. Over all experience was great.

      Interview questions [1]

      Question 1

      Number of times 1 shows up from a list from 1 - 1000
      Answer question
      2