Fidelity Investments·Full Stack Engineer

Fidelity Investments Full Stack Engineer interview experience

No offer

Hard

Negative

Westlake, TXPosted Jun 2026 · Candidate report, summarized by Dataford

My interview journey had one behavioral round followed by two coding rounds, and the overall vibe was pretty challenging.

For the coding parts, the prompts were written in a low-level-design style, where I had to implement something with an LLD framing rather than just jump straight into an algorithm.

I remember getting practical build-style tasks like implementing a 2D tile game and an elevator system, and the interviews themselves weren’t very interactive. A lot of the time the interviewer stayed quiet and expected me to drive the solution to completion without much back-and-forth. Even with that pressure, I had to keep my reasoning tight and produce a clean, “perfect” end result on my own.

The experience

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