Citadel·Data Scientist

Citadel Data Scientist interview experience

No offer

Hard

Neutral

Hong KongPosted Sep 2025 · Candidate report, summarized by Dataford

The first thing that stood out to me was how directly technical the interviews were.

I didn’t really get a gradual warm-up; it began with a modeling task where I had to build a random forest, and then I was pushed with a follow-up about the correlation between two variables and how that connects to feature importance and how I’d interpret the model.

From there, the process broadened into multiple rounds that felt like a comprehensive quantitative assessment. There was an initial HR screening, then a technical coding test, and then several interviews with data scientists and hiring managers. The topics kept circling back to data structures, algorithms, probability, and

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