I applied through other source. The process took 4 weeks. I interviewed at Citadel Securities (New York, NY) in Nov 2025
Interview
I did the online assessment after campus recruiting reached out. Waiting to hear back on if I got selected to move forward with the rest of the interview process. The Online Assessment wasn't too difficult.
Interview questions [1]
Question 1
Binary search question where they give 2 servers and the time it takes to upgrade, and each server can't upgrade at times that are a multiple of int1 and int2 respectively. Server's can't upgrade at the same time
Hackerrank online assesment that had a 10 day expiry date. Two questions in the online assessment, both different topics. Both I struggled with and couldn't pass all the test cases for.
I applied through an employee referral. I interviewed at Citadel Securities (Sydney) in Feb 2025
Interview
The interview process consists of:
- an Online Assessment, which was 2 leetcode-style questions.
- a series of interviews for 45 minutes-1 hour after passing. I made it to the third round of the process.
Interview questions [1]
Question 1
Across my three interviews, they were quite different. The first question was a leetcode medium, which I solved successfully. The second and third interviews were a behavioural and a short class design question, which consisted of designing a class. The interviewers cared a lot about my code and design questions and asked follow-up questions.
