Jane Street·Quantitative Trader

Jane Street Quantitative Trader interview experience

Got offer

Hard

Positive

New York, NYPosted Nov 2025 · Candidate report, summarized by Dataford

My interview started with probability right away, and it was a small set of problems that still felt tricky to work through cleanly.

I remember being asked something as concrete as flipping a coin and finding the probability of landing on heads, plus a brainteaser question alongside it.

What stood out was that there wasn’t much of anything else to hide behind—very little behavioral content, and instead I had to juggle reasoning on the spot. The brainteaser was the part I couldn’t really lock onto, while the probability felt more like something I could practice for.

Overall it was a tough experience for me, and I didn’t get an offer. Looking back, the biggest surprise was how much weight they placed on quick,

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