Jane Street·Software Engineer

Jane Street Software Engineer interview experience

No offer

Hard

Neutral

London, EnglandPosted Oct 2025 · Candidate report, summarized by Dataford

My process felt like a clean sequence of four steps.

After the initial contact, I hit round one with an Excel-focused set of problems. Then I moved to a probability round over the phone, where I had to think carefully about the math rather than just compute.

Next came an online coding interview, and I remember it being very much about writing correct code and making progress in real time. The final step was in-person in their office, so by the time I got there the stakes felt higher and more immediate.

I ultimately didn’t get an offer. What stuck with me was how quickly the structure moved from spreadsheet-style reasoning to probability

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