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      Jump Trading

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      Quality Assurance Engineer Interview

      20 Jun 2015
      Anonymous employee
      Chicago, IL
      Accepted offer
      Positive experience
      Average interview

      Application

      I applied through university. The process took 2+ months. I interviewed at Jump Trading (Chicago, IL) in Nov 2014

      Interview

      I first met two software developers at a career fair for my university I was asked to write some code for the FizzBuzz problem. The two came back to my university around a month later to give on-site interviews. I talked about my programming experience, and they asked some more difficult programming problems. Finally, I was offered an on-site interview, which lasted from around 9am to 3pm. I met with mostly technical people: the software manager, the quality assurance manager, and other engineers. Except for the question, "Why are you interested in quality assurance?", everything was related to programming and software development. I enjoyed talking about the technical questions and the lunch was great. Jump primarily uses C++ and Python. It would be good to respond to the programing questions in one of those languages.

      Interview questions [5]

      Question 1

      You're given a string of messages from a stock exchange. It's in some format like "{orderId=<integer>|<message>}{orderId=<integer>|<message>}{orderId=<integer>|message}...". All the orderIds are unique, and no message will have a "|" in it. Write some code that given the orderId, it returns the message associated with it. How would you test the code you wrote and what would you test? (data structures)
      Answer question

      Question 2

      Given a binary search tree, determine the closest common ancestor of two entries in the tree. The closest common ancestor of x and y is the node with greatest depth that is an ancestor of x and y. (data structures)
      Answer question

      Question 3

      I was given a C++ header file of a List class. It's essentially LinkedList that requires insert() and remove(), except the insert() function has additional conditions. Implement those functions. How would you test the data structure? (software design)
      Answer question

      Question 4

      I was given a whiteboard eraser and asked to define it and explain what it is. (software requirements)
      Answer question

      Question 5

      I was given a diagram of how Jump's software system typically communicates with an exchange. I was given a scenario in which some output was wrong and asked what steps I would take to try and determine the source of the problem. (debugging)
      Answer question
      12

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