Palantir Interview Guide & Preparation
Palantir has one of the most unique interview processes in tech. The process includes a technical phone screen followed by a multi-day "onsite" with a focus on decomposition problems (breaking down complex problems into engineering solutions), learning interviews (coding in an unfamiliar domain), and system design. Palantir values first-principles thinking and mission alignment.
Interview Process
Application / Referral
Apply through Palantir Careers or via referral. Palantir recruits heavily from top universities and values unconventional thinkers.
Recruiter Screen
A 30-minute call to discuss your background, role alignment (Forward Deployed Engineer vs. Backend Engineer), and interest in Palantir's mission.
HackerRank / Online Assessment
A timed online coding assessment (60-90 minutes) with 2-3 algorithmic problems at medium-hard difficulty.
Technical Phone Screen
A 45-60 minute coding interview focusing on algorithms, data structures, and problem decomposition.
Onsite / Super Day
Three to four rounds: 1 decomposition interview (break a vague problem into engineering tasks), 1-2 coding interviews, and 1 behavioral/values interview. The decomposition round is unique to Palantir.
Debrief & Offer
Panel debrief and decision. Offers include base salary, bonus, and RSUs.
Common Topics
Sample Questions
Decomposition
A hospital wants to optimize patient bed assignments to reduce wait times. Decompose this problem into engineering components: data models, algorithms, API design, and user interfaces.
Onsite Coding
Given a graph of relationships between entities, find all connected components and identify the most influential node in each component.
Implement an algorithm to find the minimum cost to connect all nodes in a weighted graph (minimum spanning tree) with the constraint that certain edges must be included.
System Design
Design a system for tracking supply chain logistics across multiple countries with real-time anomaly detection.
Values Interview
Why do you want to work at Palantir? How do you think about the ethical implications of the work we do?
Preparation Tips
The decomposition interview is unique — practice breaking ambiguous, real-world problems into concrete engineering components
For decomposition, think about data models, APIs, storage, and user workflows before writing any code
Palantir coding questions are hard — focus on graph algorithms, DP, and complex data structure problems
Understand Palantir's products (Gotham, Foundry, Apollo) at a high level — this shows genuine interest
Mission alignment matters: Palantir works with government and defense — be prepared to discuss your comfort level
For Forward Deployed Engineer roles, emphasize client-facing skills, adaptability, and rapid prototyping
Practice explaining complex technical solutions to non-technical stakeholders
Tech Stack
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