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hardPalantirRetoolDatabricks

Two customer lists, millions of rows, no shared key, names and emails almost match. Dedupe and merge them.

Palantir's home turf: entity resolution disguised as a dedupe task. The naive O(n²) comparison is the trap, blocking, match scoring, transitive closure, and the golden-record question are where the interview actually happens.

Updated Sep 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.

Palantir's home turf: entity resolution disguised as a dedupe task. The naive O(n²) comparison is the trap, blocking, match scoring, transitive closure, and the golden-record question are where the interview actually happens.

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