Palantir technologies Software Engineer interview experience

Candidate report, summarized by Dataford

My onsite experience followed a clear “decomposition plus learning” structure rather than the classic system design + debugging vibe.

For the decomposition part, I treated it like system design and even did an HLD, and the interviewer didn’t steer me toward getting into heavy LLD details. The prompt gave me a sample dataset, and I had to explain how I’d use that data to accomplish the task.

The learning round was different from what I’d mentally prepared for—more like being asked to enhance work they’d already built. They showed me the modules the team had written, and then I had to extend them, with documentation provided for the library in the language I chose. I remember being able to pick between Python, Java, or

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