Ho sostenuto un colloquio presso Citadel Securities
Colloquio
One 45 minute interview consisting of two parts, a statistical problem and a coding problem. The coding problem was a typical leetcode question and the statistical problem was something you might find in a typical "prep for quant interview" book
Domande di colloquio [1]
Domanda 1
The stats question was about drawing black and red balls from an urn under certain conditions and coming up with a distribution for each outcome, the leetcode question was about finding pairs of elements that sum to a particular value in a sorted list
Ho sostenuto un colloquio presso Citadel Securities (Miami, FL)
Colloquio
Applied through a recruiter, had a zoom call with a PM in Miami. Interviewer was nice but they did not sound like they are actually hiring so it's a bit confusing
Ho sostenuto un colloquio presso Citadel Securities (Zürich, Zürich)
Colloquio
Started with technical questions on standard statistics and ml after a brief introduction. Questions got progressively harder and required more intuition, for example on correlation and how to handle model assumptions.
Domande di colloquio [1]
Domanda 1
Assumptions of OLS and scenarios where you would implement it over other models
Ho sostenuto un colloquio presso Citadel Securities (Londra, Inghilterra)
Colloquio
Reasonable probability focus — mainly Greenbook material and standard distribution or Markov chain questions. Nothing unusual or tricky; just solid core topics worth revising thoroughly. All quite expected overall.
Nothing unexpected,
Domande di colloquio [1]
Domanda 1
Coinflip EV questions - first Heads, Tails or Heads Heads
