J'ai postulé en ligne. J'ai passé un entretien chez Citadel Securities (New York, NY)
Entretien
Online candidate assessment. Two questions where each question has hard restrictions on time limit requiring efficient solutions in order to pass test cases. matrix sliding window type of question and dp
Questions d'entretien [1]
Question 1
Dynamic Programming. Recognizing a 3d dp problem and efficient solution.
Also sliding window (239)
J'ai postulé en ligne. J'ai passé un entretien chez Citadel Securities (Sydney) en juin 2026
Entretien
The process includes 4 technical interview and 1 final behavior interview, the primary language is Python. You will scheduled for next round if passed previous round, I failed on 2nd round
Questions d'entretien [1]
Question 1
1st round: questions about tcp/udp, heap, queue, thread/process + coding exercise about parse file
2nd round: ask about project experience, implement decorator
J'ai postulé en ligne. J'ai passé un entretien chez Citadel Securities (Chicago, IL) en févr. 2026
Entretien
First round is behavioral and technical and second round is superday. Then is final round and team matching. Superday was virtual and 45 min each, all same format, with beginning behavioral questions, a huge chunk on system design, and final questions at the end.
Questions d'entretien [1]
Question 1
System design, create a stock options book using dict
Went through 4 rounds of technical interview + 1 round of leadership round.
This was for a C++ internship role. Process and questions were very dependant on your interviewer, but it is definitely C++ heavy and should be familiar with low level stuff
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