Susquehanna International Group·Software Engineer

Susquehanna International Group Software Engineer interview experience

No offer

Hard

Positive

United StatesPosted Nov 2025 · Candidate report, summarized by Dataford

I got pulled into the process via a LinkedIn recruiter reach-out, and I went straight into a live coding round.

I expected something like typical leetcode-style questions, but it didn’t feel that way. The prompt started with a chunk of code, and the main task was to optimize it.

They asked me to reason about big-O complexity for essentially every step as I modified the approach, and I could look up library syntax for implementation details. I kept working through the performance reasoning, but I wasn’t able to finish the full problem, and I wasn’t moved forward.

The experience was intense in a very specific way—less about coming up with a fresh algorithm from scratch and more about improving and

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