FFlexTrade Systems Inc.·Software Engineer

FlexTrade Systems Inc. Software Engineer interview experience

No offer

Hard

Neutral

London, EnglandPosted May 2026 · Candidate report, summarized by Dataford

After a straightforward intro call, I walked through my background from start to finish, focusing on my most recent role and the architecture, day-to-day work, and core language uses that mattered to it.

Since I was a junior developer, the call felt pretty “storytelling”-oriented rather than deep grilling, and it set the tone for what came next.

About a week later I was sent a private coding challenge on LeetCode with a one-week window, though I was told it should take around two hours. The timer effectively ran longer (it was set to three), and the actual problem was a single question where I ended up passing 4 out of 5 test cases. I spent 2 hours 27 minutes on my submission and only found after that the failing case wasn’t a public one, which honestly made it harder to debug what was

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