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Palantir technologies Forward-Deployed Engineer Interview Questions

The questions to prepare for a Palantir technologies Forward-Deployed Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
CodingStart here. 19 questions · ~166 min
Nested Record Query IndexHard
Practice
Recently asked

Build nested hash-based indexes for dot-path fields and answer multi-filter record queries by intersecting candidate ID sets.

Hash Tablesnested dictionariesoptimizationPalantir technologies
Dynamic Shortest Paths with UpdatesHard
Practice
Recently asked

Maintain a dynamic weighted graph and recompute shortest path after each edge update using Dijkstra and a min-heap.

shortest pathAlgorithmsGraphsPalantir technologies
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2
Pipelines3 questions · ~26 min
Integrate New Model API FastMedium
Recently asked

Add a newly released ML model API into an existing pipeline quickly, while handling schema changes, retries, and data quality checks.

data pipelineAPIsintegrationPalantir technologies
Parse Unstructured Real-Time FeedMedium
Recently asked

Build a real-time ingestion pipeline that parses messy events, cleans them, and loads structured records into a queryable database.

Data Qualitydata parsingtransformationsPalantir technologies
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3
Execution11 questions · ~96 min
Real-Time Logistics Tracking RolloutHard
Recently asked

Plan a 12-week rollout of a real-time logistics tracking and reviews app using Foundry and Workshop across 3 regions and 5 external integrations.

Executionlogisticsreal-time systemsPalantir technologies
Scalable Transaction Messaging and PricingHard
Recently asked

Tests modular system design and scaling for business logic that optimizes pricing under complex rules.

system designTrade-offsPalantir technologies
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4
Product Sense6 questions · ~53 min
Weather Data to Trigger SensorsMedium

Assesses product sense and end-to-end thinking for a real-world data-driven system.

Palantir technologies
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5
Behavioral & Leadership10 questions · ~88 min
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6
More topics1 question · ~9 min
In-House SQL Queries for BIMedium

Evaluates SQL-like query writing and ability to translate business questions into data logic.

sqlPalantir technologies
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL: Active User QueryMedium
Practice
Practice drill

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

Data Analysissql queriesPalantir technologiesPalantir
SQL Average Selling PriceMedium
Practice
Practice drill

Calculate weighted average selling prices by product using a date-range join, aggregation, and NULL handling.

leetcodesqlCostarCostar Group
Top Models Per Asset ClassEasy
Practice
Practice drill

Rank Balyasny research models by average return within each asset class using DENSE_RANK and aggregation.

performancesqlBalyasny Asset Management
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.