Anduril interview questions

Maximum Number of Darts Inside of a Circular Dartboard

Given up to 100 points and a fixed radius r, find where to place a circle of radius r to cover the maximum number of…

Companies: Anduril, Meta

Last reported Oct 2026

Snapshot Array

Design a versioned array that supports point updates, taking snapshots (returning increasing snap_ids), and querying the value at an index for a given snap_id. The…

Companies: Anduril, Amazon, Apple, MongoDB

Array · Binary Search · Design · Hash Table

Last reported Sep 2026

Describe your most impactful project

Companies: Anduril, Airbnb, Amazon, Anthropic +22

Project Deep Dive

Last reported Aug 2026

Rotting Oranges

Given an m×n grid with empty cells, fresh (1) and rotten (2) oranges, compute the minimum minutes until all fresh oranges become rotten as rot…

Companies: Anduril, Amazon, Flipkart, Goldman Sachs +3

Array · Breadth-First Search · Matrix

Last reported Aug 2026

Queue Reconstruction by Height

Given pairs (h, k) where k is the number of people with height >= h standing in front of that person, reconstruct the queue ordering…

Companies: Anduril

Last reported Aug 2026

Design a Command and Control System

Design a command and control system that allows operators to remotely monitor, manage, and send instructions to a fleet of distributed devices or agents, ensuring…

Companies: Anduril

Last reported Jul 2026

Tell me about a time when you had to lead a team or project

Companies: Anduril, Checkout, Meta, Netlight

Last reported Jul 2026

Good Soccer Team Photo

Given two lists of floating point values representing player heights for two soccer teams, determine if the photo is 'good' by checking if the players…

Companies: Anduril

Last reported Jul 2026

Shortest Path in a 2D Grid with Obstacles (with Path Reconstruction)

Given a 2D grid of a specified size, start coordinates, and end coordinates, find the shortest path between the two points. The problem is presented…

Companies: Anduril, Amazon

Last reported Jul 2026

Design a C2 System Integration Platform

Design a platform that integrates a Command and Control (C2) system with a third-party platform (e.g., an F-35 fighter jet), enabling secure data exchange, real-time…

Companies: Anduril

Last reported Jun 2026

Tell me about your most challenging project

Companies: Anduril, Amazon, Assort, Bloomberg +9

Last reported Jun 2026

Why do you want to leave your current company?

Companies: Anduril, Microsoft, Palo Alto Networks, Salesforce +1

Last reported Jun 2026

Design a Chat/Messaging System

Design a real-time messaging system like WhatsApp or Facebook Messenger that supports 1:1 and group conversations, message delivery status tracking, user presence features…

Companies: Anduril, Addepar, Airbnb, Airwallex +22

System Design

Last reported Jun 2026

Design a File Search and Directory Traversal System

Design and implement a file search system that can traverse directory structures and locate files based on various criteria. The solution should incorporate object-oriented…

Companies: Anduril, Amazon, Atlassian, Google +1

Last reported Jun 2026

Binary Tree Coloring Game

Given a binary tree and the node x chosen by player 1, determine whether player 2 can pick a node y that guarantees victory by…

Companies: Anduril

Binary Tree · Depth-First Search · Tree

Last reported May 2026

Decode Ways

Given a digit string, count how many ways it can be segmented into valid codes 1–26 (two-digit codes cannot start with '0'), handling invalid zeros…

Companies: Anduril, Lyft, Meta

Dynamic Programming · String

Last reported May 2026

Tell me about a time when you received constructive feedback and how you responded to it

Companies: Anduril, Amazon, Checkout, DoorDash +4

Last reported Apr 2026

Design a URL shortener like Bitly

Read-heavy key-value service: unique short-code generation, hot-key caching, redirect semantics.

Companies: Anduril, Amazon, Apple, Bending Spoons +26

API Design · caching · hot-keys · http-redirects

Last reported Apr 2026

Design HashMap

Implement a HashMap for integer keys/values without using built-in hash table libraries that supports put, get, and remove operations. The core challenge is to design…

Companies: Anduril, Canva, Chewy, Goldman Sachs +2

Array · Design · Hash Function · Hash Table

Last reported Apr 2026

How did you overcome a situation where you have been given a negative feedback?

Companies: Anduril, Amazon, DoorDash, Meta +5

Last reported Apr 2026

Tell me about a project where you failed

Companies: Anduril, Adyen, Confluent, Datology +5

Last reported Apr 2026

Basic Calculator II

Evaluate a valid arithmetic expression string containing non-negative integers and the operators +, -, *, / (with spaces allowed), where division truncates toward zero. The…

Companies: Anduril, Flex, Meta, Snap +1

Math · Stack · String

Last reported Jan 2026