Knight Capital Interview Questions & Reviews

Updated Jun 12, 2014
Updated Jun 12, 2014
37 interviews

Interview Experience

Interview Experience

53%
28%
18%

Getting an Interview

Getting an Interview

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17%

Interview Difficulty

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Candidate Interview Reviews

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  1.  

    Senior Java Developer Interview

    Anonymous Interview Candidate  in  Jersey City, NJ
    Anonymous Interview Candidate in Jersey City, NJ
    Application Details

    I interviewed through a recruiter. The process took 4+ weeks - interviewed at Knight Capital in May 2012.

    Interview Details

    30 minutes technical interview over phone. Followed by face to face interview met with 4 people. Followed by another face to face interview with Sr Management, chief technology officer and Human Resource personnel,

    Interview Questions
    Accepted Offer
    Positive Experience
    Average Interview
  2.  

    Intern Interview

    Anonymous Interview Candidate  in  Jersey City, NJ
    Anonymous Interview Candidate in Jersey City, NJ
    Application Details

    I interviewed through college or university. The process took 2 weeks - interviewed at Knight Capital in June 2013.

    Interview Details

    Contacted by HR.

    Scheduled the interview.

    Met with 4 associates, and 1 director.

    Heard back in one week.

    Interview Questions
    Accepted Offer
    Positive Experience
    Average Interview
  3.  

    Software Developer Interview

    Anonymous Employee  in  Santa Clara, CA
    Anonymous Employee in Santa Clara, CA
    Application Details

    I interviewed through a recruiter. The process took 6 weeks - interviewed at Knight Capital.

    Interview Details

    I was initially given a written tests, consisting of 4 programming questions/problems. Makefiles and (not necessarily comprehensive) test cases were provided.The test was un-timed, but we were supposed to report how long we took in completing it. My test took roughly 4 hours.

    We scheduled a phone interview about a week later. There were more technical questions, as well as the typical behavioral questions. At the end of the interview, I was asked to complete an implementation of one of the programming questions we discussed and send the result via e-mail.

    Soon after, I had a similar second phone interview. Again, a mix of technical and behavioral questions, with a post-interview programming exercise.

    I was invited to an on-site interview, which lasted for the entire day. I interviewed with 4-5 onsite software developers one-on-one, as well as with another developer in a different location via satellite and a group lunch. All of the interviews were technical (except for the lunch), with a mixture of brain-teasers, math problems, and programming exercises (using a notebook or whiteboard to write out solutions). Even during the video conference, I was grilled on material I'd mention on my resume.

    Knight made me a very competitive offer within a few weeks of interviewing.

    Overall, I was very happy with the entire process. All of the technical questions and tests were interesting without being overly burdensome, and I appreciated the extent to which they try to vet candidates. I was also very impressed with all of the employees I met. Overall, the atmosphere seemed relatively relaxed, but still meritocratic and productive.

    Interview Questions
    • Suppose you have a stack of pancakes of pairwise distinct sizes. You wish to order the pancakes the pancakes by size, with the largest one on the bottom. The only operation is available to you is a spatula flip: You can insert a spatula anywhere in the pancake stack and flip over the stack above the spatula, reversing the order of the pancakes. For instance, in the following stack

      bottom . 2 3 | 5 1 4 . top

      Inserting the spatula between 3 and 5 will give:

      bottom 2 3 4 1 5 | top

      Design an algorithm to sort the pancake stack using this operation. Write a program to execute this algorithm in C++. What is the runtime efficiency (precisely, not just in Big-O time), assuming that a flip is an atomic operation? Is your algorithm optimal (again, precisely, not just asymptotically)?
        View Answers (2)
    Reasons for Declining

    I had multiple competitive offers, and another offer was better based on some other factors unrelated to the companies directly.

    Declined Offer
    Positive Experience
    Difficult Interview
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  5.  

    Quantitative Strategist Interview

    Anonymous Employee
    Anonymous Employee
    Interview Details

    I applied for the quantitative strategist position on their career site. Then I got three technical phone interviews, then an onsite interview. They ask a lot of problems about algorithms, such as sorting and searching problem.

    Interview Questions
    • Suppose you have a one-dimensional array A with length n that contains both positive and negative numbers. Design an algorithm to find the maximum sum of any contiguous subarray.   Answer Question
    No Offer
  6.  

    Senior Software Developer Interview

    Anonymous Employee
    Anonymous Employee
    Application Details

    I interviewed through a recruiter. The process took 3 weeks - interviewed at Knight Capital.

    Interview Details

    Contacted by a recruiter on Linked in. Had a brief conversation that detailed what they were looking for. Next had a 1 hour phone interview with the manager that involved some design and logic questions. So far so good. Next was a take home development project. Finally came to the office in Jersey City phone further interviews that consisted on 2:1 meetings. The first of these must have been some kind of stress test because their internal video conference system had this very strange echo making the person on the other end unintelligable. At one point they asked me to help fix their system. Very strange experience.

    Interview Questions
    • I'd say the most difficult questions came from those on the video conference line which I could not begin to tell you what was asked. It sounded like the Chevy Chase na-na-na's from Caddyshack.   Answer Question
    No Offer
    Negative Experience
  7.  

    Quantitative Strategist Intern Interview

    Anonymous Employee  in  Jersey City, NJ
    Anonymous Employee in Jersey City, NJ
    Application Details

    I interviewed online. The process took 2 months - interviewed at Knight Capital in April 2013.

    Interview Details

    Written test/ 3 1-hour-long phone interviews / On-site interview.

    Written test was not that hard and the rest of interviews are pretty similar to other hedge funds. They will ask Probability, Programming Questions

    Interview Questions
    No Offer
    Positive Experience
    Average Interview
  8.  

    Software Engineering Interview

    Anonymous Employee  in  New York, NY
    Anonymous Employee in New York, NY
    Application Details

    I interviewed online - interviewed at Knight Capital in May 2013.

    Interview Details

    phone screen.
    How hashmap works.
    difference between interface and abstract class.
    walk through linked list, using double pointer.

    Interview Questions
    No Offer
    Positive Experience
    Average Interview
  9.  

    Associate Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Interview Details

    First I had a phone interview with the hiring manager and then I went in for an on-site with 5 other developers who asked me a variety of Java and DB questions, from data structures to basic OO design to design patterns. Also some simple java queries. Nothing too difficult.

    Interview Questions
    • There was one developer that went over several pages of printed Java code with me, each page a different method. I was asked questions about each page, like whether it would compile, if there were logic errors, concurrency problems etc.   Answer Question
    Negotiation Details
    My recruiter handled it so it went pretty smoothly. I was given an offer that I was satisfied with.
    Accepted Offer
  10.  

    Quantitative Strategist Summer Intern Interview

    Anonymous Interview Candidate  in  Newport, NJ
    Anonymous Interview Candidate in Newport, NJ
    Application Details

    I interviewed online. The process took 1+ week - interviewed at Knight Capital in March 2013.

    Interview Details

    Interviewers are smart, nice but the interview questions are challenging. Could not answer all of the questions, but still got an offer. Some math and probability questions are very hard. Some basic algorithm questions are also asked. Not many derivatives pricing questions, but quite a few questions about basic market intuition. In general, the interviews are hard, but still doable.

    Interview Questions
    • A random walk inside some boundaries. Ask to calculate the probability as time goes to infinite. Not fully understand the question.   Answer Question
    Accepted Offer
    Positive Experience
    Difficult Interview
  11.  

    Quantitative Analyst Interview

    Anonymous Employee  in  Jersey City, NJ
    Anonymous Employee in Jersey City, NJ
    Application Details

    I interviewed through an employee referral. The process took 2 weeks - interviewed at Knight Capital in August 2012.

    Interview Details

    Two technical phone interviews then in-person interview. On the first phone interview, interviewer asked about randomly positioned points on a circle, then to step through an analysis of Buffon's Needle. On the second phone interview, interviewer asked about a gambling game which was sort-of inverse Prisoner's Dilemma with repeated playings

    Interview Questions
    • Buffon's needle. I was familiar with it and still had a lot of trouble walking through the analysis.   Answer Question
    No Offer
    Difficult Interview

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