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Palantir Interview Questions Palantir Interview Reports Engineering at Palantir Career Levels and Compensation

Someone at Palantir says...

Some (but not all) of the work the company does is incredibly exciting and impactful to real-world problems. Your co-workers will be smart, hard-working, and motivated. There's a very small number of companies in the DC area that offer catered food 3 times a day and have a speakeasy. The perks are real, and while they shouldn't be a deciding factor, they're definitely nice. Stop hiring software engineers to not do software engineering. Don't lie to prospective candidates about their job duties. Consider hiring some people who have demonstrated excellence in leadership, and actually let them be leaders and make decisions.

Palantir Interview Questions

Note: ensure you read the disclaimer on the previous page reading the accuracy and sourcing of these problems.

K Largest Elements From List

We're given a list or array of numbers, like the following: const nums 5, 16, 7, 9, 1, 4, 3, 11, 2 Can you write an algorithm to find the k largest values in a list of n elements? If k were 3 , we'd want the three largest numbers returned. The correct logic would return 16, 11, 9 ....

Difficulty: 5/10

Remove Duplicates From Array

Given an array, return another array with just the ordered unique elements from the given array. In other words, you're removing any duplicates. Note: Order needs to be preserved, so no sorting should be done. And the order should be maintained with the first occurrence of the element in the given...

Difficulty: 4/10

Subsets Summing Zero

Given an array of positive and negative integers like the following: js const arr 3, 5, 2, 4, 7, 1, 6, 8, 8, 4 Can you write a method findSumZeroSubsets to return the starting and ending indexes of all subarrays in it that sum up to zero? **Note**: There are 3 terms that...

Difficulty: 7/10

Array Intersection

As we ease our way into the course, we'll want to start with the basic data structures and their operations. However, don't be fooled how fundamental these things are! Interviewers will often test you on things that are deceptively easy. We saw this in Reverse a String challenges reverse a stri...

Difficulty: 2/10

Validate a BST

Given a binary search tree like the one below, can you write a function that will return true if it is valid? 5 3 9 1 4 Recall that a BST is valid only given the following conditions: The left child subtree of a node contains only nodes with v...

Difficulty: 4/10

Flood Fill Paintbucket

Imagine the implementation for the paintbucket feature in Microsoft Paint, or how certain image filters work. You click on a specific pixel on a screen, and every similar colored neighboring pixel would change to your selected color. Let's implement a simpler version of that feature. You're gi...

Difficulty: 7/10

Dollar Sign Deletion

You're given an array of strings containing alphabetical characters and certain characters. A represents a DELETE action whereby the character before it is deleted. Each of these strings will be run through a method to operate on the DELETE action. We want to find out if the final string...

Difficulty: 4/10

Dutch National Flag Problem

This problem is named the "Dutch national flag problem" because the flag of the Netherlands is comprised of the colors red, white, and blue in separate parts. Although we won't be using colors, the premise of the challenge is to develop a sorting algorithm that performs some form of separations of th...

Difficulty: 8/10

String Breakdown

We're given a string and need to see if it can be broken down into words from a dictionary array. For example: js const str "applecomputer" const dictArr "apple", "computer" stringBreakdown str, dictArr true Assuming that there are no repeats in the dictionary array, ca...

Difficulty: 7/10

Defining Virtual Memory Thrashing

Decoding Virtual Memory and Its Downside: Thrashing Introduction to Virtual Memory Virtual memory serves as an effective extension to your computer's physical RAM. The operating system cleverly manages memory between the hard disk and actual RAM, giving each program the feeling that it has ...

Difficulty: 5/10

Introduction to Data Cleaning and Wrangling

The Importance of High Quality Data In the modern business landscape, data is often considered the lifeblood of an organization. Industries like banking, insurance, retail, and telecommunications heavily rely on data to drive performance and gain a competitive edge. The Cost of Poor Data ...

Difficulty: 5/10

Understanding the Key Concepts

Introduction to Key Concepts Welcome to the Introduction to Key Concepts lesson! In this lesson, we will give a brief overview of the key concepts that form the foundation of programming. These concepts are essential to understand before diving deeper into the specific programming languages an...

Difficulty: 5/10

People at Palantir Say

This information was sourced from reviews originally posted on Glassdoor.

Brilliant people, domain experts, quick thinkers, constructively critical. Opportunity to solve problems and impact a variety of institutions and domains that doesn't exist anywhere else. Teammates honestly depend on the hard work of each other and it keeps us moving forward. Great culture of working hard on important, high-stakes work and supporting the people you're working with. Not super political.

Very fast career growth. Since your lead probably has significantly more work they'd like to get done than they actually can, if you demonstrate that you be trusted to prioritize, plan, and deliver without their involvement you will be given more and more autonomy, very rapidly. Related to the above: very fast personal growth. Since there is so much more work than can actually get done, you can basically choose any kind of project you wish to work on, and change regularly. You can try out roles you wouldn't normally, and tackle problems in various industries.

Lots of growth opportunities if you're willing to teach yourself Many friendly and curious people Tasty food Fun events Good yoga classes. The wheel is reinvented all the time here since we never actually use industry best practices. The leads are young (especially on product development) and it's an intensely political workplace. Many of the leads are horrible at giving honest feedback and people are frequently burned by this (including myself). People are often praised for working through the night or weekends. They are never praised for planning ahead to avoid such catastrophes. Working long hours is a badge of honor here.

Palantir is a very well run company with incredibly high caliber employees and products. Code reviews are rigorous and the quality of software is stellar. Lots of interesting work, fast-paced team. The culture of the company is such that you do need to be willing to commit more than working hours to it. There is a culture of Palantir being in many aspects of life to weekend hangouts to business trips. . . etc.