J'ai postulé en ligne. Le processus a pris 2 semaines. J'ai passé un entretien chez Citadel
Entretien
I got two phone screen (with camera on) back-to-back, each elapsed 1hr. The interview were mainly about past research experience and practical statistic concepts. Interviewers are conversational, willing to clarify questions and provide hints.
Questions d'entretien [1]
Question 1
1. Past research experirence (reinforcenment learning, model explainability). A lot of followups.
2. Bias and variance trade-off in random forest.
3. Linear regression closed-form solution (w/ and w/o L2 regularization).
J'ai postulé via un recruteur. J'ai passé un entretien chez Citadel
Entretien
After the initial recruiter call, I moved on to a 45-minute virtual interview. The session was a mix of LeetCode-style algorithmic problems, along with some probability and statistics questions. The coding portion wasn't too difficult—I'd say it was around the Medium level.
Questions d'entretien [1]
Question 1
X,Y and Y,Z positive correlated. What can we say about X,Z
J'ai postulé via un recruteur. J'ai passé un entretien chez Citadel
Entretien
Reach out directly without oa, give some basic probability and stats question, also ask about something on the resume. the interviewer is pretty nice, and answered all questions, still got rejected lol
J'ai passé un entretien chez Citadel (New York, NY)
Entretien
Two phone screens, one was a Leetcode Easy coding problem along with general ML questions. Second asked some probability statistics questions. Last one was about my research and a general feeler about my knowledge of economics and current events.
Questions d'entretien [1]
Question 1
If you have a dataset with many features, what methods can you used to reduce the dimension?
