Flexport·Software Engineer

Flexport Software Engineer interview experience

Medium

Neutral

ShanghaiCandidate report, summarized by Dataford

The interview was on video, and the interviewer started immediately with coding—no small talk, and the presence felt very expressionless.

The first coding problem asked me to validate an IPv4 address with specific examples. I stumbled at the beginning because I made a mistake in how I split the string, and that cost me a bit of momentum.

The second question was also IPv4 validation, but this time the input didn’t include delimiters. It pushed me toward a depth-first search approach while handling tricky cases like leading zeros, and I finished it pretty quickly once I got the right framing.

For the third prompt, I had to print all possible valid IPv4 addresses based on the logic from the earlier question. That part felt

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