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Updated weekly · Last refresh Oct 17

Palantir Software Engineer Interview Questions

The questions to prepare for a Palantir Software Engineer interview. Questions from real interview reports rank first. Updated daily.

50questions
~12htotal time
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1
CodingStart here. 20 questions · ~282 min
Topological Task Dependency GraphHard
Practice

Construct a dependency adjacency list, resolve glob patterns, and return a deterministic topological ordering.

dfsData StructuresAlgorithmsPalantir
Fraud Detection Programming TaskHard
Practice

Count fraudulent transactions by comparing each amount with twice the rolling median using a frequency window.

ArraysalertsAlgorithmsPalantir
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2
System Design17 questions · ~239 min
Syncing Across a Faulty NetworkHard

Design a reliable relational database synchronization system that tolerates disconnections, retries, conflicts, and partial failures.

distributed systemsfailure modesoffline syncPalantir
System Design and Debugging BasicsHard
Recently asked

Explain how you would clarify, design, debug, and monitor an end-to-end ML system.

system designDebuggingdesignPalantir
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3
SQL & Data Manipulation4 questions + 1 drill · ~66 min
Ranking Users From Usage LogsMedium
Practice
Recently asked

Aggregate Foundry usage logs and rank active users by screen time, page views, and activity status.

JoinsData ManipulationAggregationsPalantir
SQL: Active User QueryMedium
Practice
Recently asked

Find the most active Palantir Foundry user with a date-filtered LEFT JOIN and aggregation.

Data Analysissql queriesPalantir
LeetCode SQL and AlgorithmsEasy
Practice
Practice drill

Summarize SQL and algorithm practice in a structured response field.

analytics toolsleetcodeData ManipulationMonee
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4
Execution3 questions · ~42 min
Fix Payment Race ConditionHard
Recently asked

Evaluates debugging approach and concurrency-safe design for financial correctness.

DebuggingconcurrencyPalantir
Tell Me About Your Past ExperienceMedium
Recently asked

Describe a past project you delivered, including your role, planning approach, stakeholder coordination, and results.

Success CriteriaExecutiondelivery managementPalantir
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5
Behavioral & Leadership6 questions · ~84 min
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The finish line: interview-readyComplete all 50 questions plus 1 hands-on drill to finish this plan.