J'ai passé un entretien chez Citadel Securities (Londres, Angleterre)
Entretien
I had several interviews there. The interviews were always hugely differing, so it is hard to prepare. Some were coding interviews (asking about Class Structure in python, and how I would implement some things), others were about linear models and hypothesis tests, and others then about linear algebra stuff..
Questions d'entretien [1]
Question 1
Double the data set in a linear regresison. What happens to predictors, se's and so on..
J'ai passé un entretien chez Citadel Securities (Singapour)
Entretien
Long telephonic and video interview. Maths, probability questions and a small programming assignment. Moderate difficult interview level. Motivation/ interest to join cit sec. Started
on time and very efficient use of time
It was mostly about coding. I was first being asked to share my research experience followed by a Q&A, and then we moved on to a DP problem. Since we discussed my research for ~ 40 min, I didn't have time to finish testing my code.
J'ai passé un entretien chez Citadel Securities (New York, NY)
Entretien
Internal matching process, then straight to a technical round. Technical Interview, some probability (brainteaser style, refresh conditional probability and Markov Chain) and linear regression, plus some coding puzzle (leetcode style medium)
Questions d'entretien [1]
Question 1
Anything you know about linear regression and related follow ups