Palantir Interview Questions (11+ Questions)
Last Updated: June 8, 2026 • 11 Questions • Real Company Interviews
Prepare for your Palantir interview with our comprehensive collection of 11+ real interview questions and detailed answers. These questions have been curated from actual Palantir technical interviews across various roles including DevOps Engineer, Data Engineer, QA Engineer, and more.
Table of Contents
- Diagnose Nginx CPU Bottleneck (easy)
- FIx Service Returning 503 Erros (medium) 🔒
- StatefulSet With Automatic Failover Using Headless Service (medium) 🔒
- GitHub Actions Conditional Step Execution (medium) 🔒
- Create and Use a Composite Action (medium) 🔒
- Best Time to Buy and Sell Stock (easy)
- Filter With EXISTS (easy) 🔒
- Extract Schema Information from Parquet File Using PyArrow (easy)
- Cache and Performance (medium)
- Query Utilizing BETWEEN and AND (medium) 🔒
- Product Search Testing (easy) 🔒
Our Palantir interview questions cover a wide range of technical topics and difficulty levels, from entry-level positions to senior roles. Each question includes detailed explanations and answers to help you understand the concepts and prepare effectively for your interview.
💡 Pro Tips for Palantir Interviews
- Practice each question and understand the underlying concepts
- Review Palantir's specific technologies and methodologies
- Prepare follow-up questions and edge cases
- Practice explaining your solutions clearly and concisely
Interview Questions & Answers
1. Diagnose Nginx CPU Bottleneck
Learn how to pinpoint and extract the PID of the highest CPU or memory-consuming nginx worker process on a Linux server using Bash commands. This targeted approach helps quickly isolate and mitigate performance bottlenecks in Nginx web servers, ensuring stable and smooth user experiences during peak load.
2. FIx Service Returning 503 Erros
Troubleshoot 503 Service Unavailable errors by fixing endpoint discovery and backend pod routing. Resolve empty endpoint slices, ensure pods match service selectors, verify pod health, and restore service connectivity. Essential for service reliability, traffic routing, load balancing, and ensuring services can successfully reach healthy backend pods.
3. StatefulSet With Automatic Failover Using Headless Service
Build Kubernetes StatefulSet with leader election: implement high-availability services, configure headless services, and automate failover with sidecar patterns.
4. GitHub Actions Conditional Step Execution
Learn to implement conditional step execution in GitHub Actions workflows using the if keyword and file existence checks. Control which steps run based on dynamic conditions to optimize CI/CD pipeline efficiency.
5. Create and Use a Composite Action
Learn to create reusable composite actions in GitHub Actions that encapsulate multiple steps and can be called from workflows in the same repository.
6. Best Time to Buy and Sell Stock
def max_profit(prices: list[int]) -> int:
l, r = 0, 1
max_p = 0
while r < len(prices):
if prices[l] < prices[r]:
profit = prices[r] - prices[l]
max_p = max(max_p, profit)
else:
l = r
r += 1
return max_p
7. Filter With EXISTS
SQL Query to Retrieve Names and Prices of Products Included in Orders
Objective
Craft a SQL query to retrieve the names and prices of all products that have been included in at least one order.
Additional Information
There are two tables involved: Products and Orders.
The `Produ...
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Detailed explanation and solution available for premium members.
8. Extract Schema Information from Parquet File Using PyArrow
Read a Parquet file using pyarrow to extract and save schema metadata including column names, data types, compression codec, row count, and file size as JSON.
9. Cache and Performance
Cache a DataFrame and demonstrate that repeated operations run faster from memory.
10. Query Utilizing BETWEEN and AND
Objective
To address the interview question, the goal is to formulate an SQL query that effectively retrieves the product_name, sale_date, and amount for all sales within the specific date range of January 1, 2023, to March 31, 2023. The results need to be sorted by sale_date in ascend...
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Detailed explanation and solution available for premium members.
11. Product Search Testing
Master product search testing with Selenium. Learn e-commerce login and search automation for beginners....
🔒 Premium Content
Detailed explanation and solution available for premium members.
Ready to Practice More?
Explore interview questions from other companies or try our hands-on labs to build practical experience.