Palantir
Big data analytics company for defense, intelligence, and enterprise.
5 Rounds
~28 Days
Very Hard
The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Full Stack Engineer
•
Coding
•
hard
Implement an in-memory Key-Value store that supports standard GET, SET, and DELETE operations, as well as nested transactions with BEGIN, COMMIT, and ROLLBACK.
#Hash Map
#Stack
#System Design Fundamentals
Full Stack Engineer
•
Coding
•
hard
Design a data structure that supports inserting a number and finding the median of all inserted numbers in O(1) or O(log N) time. This is used for real-time anomaly detection in sensor streams.
#Heaps
#Design
Full Stack Engineer
•
Coding
•
medium
Implement an LRU (Least Recently Used) Cache. It should support get and put operations in O(1) average time complexity.
#Hash Map
#Doubly Linked List
#Design
Full Stack Engineer
•
Coding
•
easy
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. Used for validating JSON-like configurations in Foundry.
#Stack
#Strings
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.