I applied through a staffing agency. The process took 1 week. I interviewed at Citadel Securities in Jan 2020
Interview
I was put in touch with the company via a headhunter. The interview was over coderpad and the phone. The interviewer asked questions about bash, networking, and C++. We did not get around to discussing math/stats.
Interview questions [1]
Question 1
Given a struct A containing only a single integer data member, how would you write a hash function for an std::unordered_set<A> in C++?
I applied through a recruiter. I interviewed at Citadel Securities in Mar 2026
Interview
I had a intro phone call and then a technical. The technical was a leetcode style question. They wanted to know more about what team I would be best fit for.
I applied online. The process took 1 week. I interviewed at Citadel Securities (Gurgaon, Haryana) in Oct 2025
Interview
I applied online for the junion C++ quantitative developer role. After one week, I got intital OA which was a C++ hackerrank. The problem required to optimize an already given function.
Interview questions [1]
Question 1
The problem required to optimize an already given function.
Standard process. The interviewers were from all over the world, so timezone could be tricky. The communication was clear and fast, they even gave some souvenirs after the first technical interview.
Interview questions [1]
Question 1
Leetcode style questions. How to find the median of two sorted arrays?
