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      Citadel

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      Senior Software Engineer Interview

      Jan 29, 2021
      Anonymous Interview Candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied online. I interviewed at Citadel

      Interview

      Here are some things you need to know about Citadel: 1. I applied to work for them over 10 years ago. They called up my current manager at the time and talked to him about me (without asking me). I was a little clueless about this at the time, even though my manager hinted at it. If I was a little more perceptive, I would have realized what they did and not gone in for the interview. So, if you decide to apply and are working full time somewhere, you should ask them not to contact your current employer until after there is an offer. But, I'm not even sure they would agree to this. So, I recommend avoiding the place simply because of this. 2. The 2nd thing that you need to be aware of is that the company cuts 10% of its "worst" employees at the end of each year. The head of the firm likes to experiment with social Darwinism and this is one of the policies. It is not hard to see that "worst employees" turns into a very nasty game of political survival. I doubt if I would have been around that long since I tend to speak truth to power. I can see working here as a contractor if the pay is adequate.

      Interview questions [1]

      Question 1

      Mostly object oriented C++ questions. They asked me to write a function for the add operator.
      1 Answer
      3

      Other Senior Software Engineer Interview Reviews for Citadel

      Senior Software Engineer Interview

      Jan 26, 2026
      Anonymous Interview Candidate
      No offer
      Neutral experience
      Difficult interview

      Application

      I interviewed at Citadel

      Interview

      Super hard. They really want you to know your stuff and not just the language, but how the compiler works and such as well. This is just me waffling for the 30 word count.

      Interview questions [1]

      Question 1

      How does the state machine work on the compiler side?
      Answer question

      Senior Software Engineer Interview

      Jun 28, 2025
      Anonymous Interview Candidate
      New York, NY
      No offer
      Negative experience
      Average interview

      Application

      I interviewed at Citadel (New York, NY)

      Interview

      Was scheduled two rounds of online live coding sessions. Problems were average, and solved both in given time. Interviewers' response was generally positive. Though one interviewer was more supportive than the other. Was told not to proceed further without any explanation.

      Interview questions [1]

      Question 1

      Coding. Algorithm about medium difficulty on Leetcode.
      Answer question

      Senior Software Engineer Interview

      Sep 23, 2024
      Anonymous Interview Candidate
      New York, NY
      No offer
      Positive experience
      Average interview

      Application

      I applied online. The process took 3 weeks. I interviewed at Citadel (New York, NY) in Aug 2024

      Interview

      First time talk to the manager (or the team leader). A simple question: a number from 1..N is missing, another number from 1..N is duplicated. Find the missing number. Provide as many solutions as possible.

      Interview questions [3]

      Question 1

      (2) 3Sum of inequality relationship: return number of triples
      Answer question

      Question 2

      (3) uncompress run length based sequences from multiple channels, then compress again, each sequence has sequence number from each channel, the sequence number can mess up a little (< 10 between true position and received position)
      Answer question

      Question 3

      (4) device strategy for blackjack, provide an interface in any language.
      Answer question

      Citadel interviews FAQs

      • Senior Software Engineer applicants have rated the interview process at Citadel with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 30% positive. To compare, the company-average is 46.4% positive. This is according to Glassdoor user ratings.
      • Candidates applying for Senior Software Engineer roles take an average of 11 days to get hired, when considering 11 user submitted interviews for this role. To compare, the hiring process at Citadel overall takes an average of 20 days.
      • Common stages of the interview process at Citadel as a Senior Software Engineer according to 11 Glassdoor interviews include:

        Phone interview:  21%

        Presentation:  21%

        One on one interview:  16%

        IQ intelligence test:  11%

        Group panel interview:  11%

        Skills test:  5%

        Personality test:  5%

        Drug test:  5%

        Background check:  5%

      • Here are the most commonly searched roles for interview reports -

        1. Software Engineer(99) ;
        2. Analyst(50) ;
        3. Quantitative Researcher(42) ;
        4. Associate(25) ;
        5. Senior Software Engineer(21) ;
        6. Recruiting Coordinator(18) ;
        7. Trader(16) ;
        8. Quantitative Analyst(15) ;
        9. Software Developer(14) ;
        10. Intern(13) ;
        11. Quantitative Developer(12) ;
        12. Quant Researcher(9) ;
        13. Portfolio Manager(8) ;
        14. Financial Analyst(7) ;
        15. Investment Analyst(7) .


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      Jobs at Citadel

      5 jobs in United States
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