Jane Street·Software Engineer

Jane Street Software Engineer interview experience

No offer

Hard

Positive

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

My first step wasn’t a typical coding interview at all—it was a take-home style assessment centered on extracting information from data in Excel.

It took a couple of hours and involved working quickly through spreadsheet tasks. The questions themselves weren’t described as “hard” in an algorithm sense, but I had to be comfortable maneuvering around Excel fast.

After I submitted that, I moved into a Zoom interview that focused on numerical problem solving. The flow was more human and interactive than I expected for a process that started with data work. There were more stages afterward, but I didn’t make it past the next checkpoints.

I didn’t receive an offer. Honestly, what made it hard wasn’t the difficulty of the concepts—it was

Create a free Dataford account to unlock the full round-by-round breakdown, the questions asked and the outcome.

Read the full report Read the full report

Preparing for this interview?

Jane Street Software Engineer interview guideThe full process, round by round, with the question bank Practice Software Engineer interview questionsReal questions from this role across companies All Jane Street interview guidesEvery role we cover at this company