Interviews with HR, a junior researcher and a senior researcher. Mostly about machine learning and algorithms. Typical quant interview questions. Did not get the offer because wasn't able to finish the last question by the senior employee
Interview questions [1]
Question 1
Types of regularization in regression and machine learning.
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.
I interviewed at Citadel Securities (New York, NY)
Interview
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)
Interview questions [1]
Question 1
Anything you know about linear regression and related follow ups
