Citadel Securities Quantitative Analyst interview experience

I ended up reaching a point where the later interviews depended on passing that first gate, and I didn’t make it through. Because of that, I never got to the interview stage in the way the fuller loops do.

The only part I really experienced firsthand was the assessment itself, and it felt like it was testing multiple areas at once—proof-style thinking (including calculus and linear algebra, plus probability) alongside coding. I remember starting with self-introduction and then immediately being hit with the proof-like questions, which made the screen feel high pressure from the