Amazon
E-commerce and cloud computing giant with AWS, the world's leading cloud platform.
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
Machine Learning Engineer
•
Coding
•
medium
Given an array of Amazon product prices and a target gift card balance, find all unique combinations of products that sum exactly to the target balance. Each product can be used an unlimited number of times.
#Backtracking
#Array
#Combinatorics
Machine Learning Engineer
•
Coding
•
medium
Design a data structure for an Amazon shopping cart analytics tool that supports adding a product ID, removing a product ID, and getting a random product ID in O(1) time.
#Hash Map
#Array
#System Design
Machine Learning Engineer
•
Coding
•
easy
Given the root of a binary tree representing an Amazon product category hierarchy, return the level order traversal of its nodes' values.
#Trees
#BFS
#Queue
Machine Learning Engineer
•
Coding
•
medium
Given a string of customer review text, find the length of the longest substring without repeating characters.
#Sliding Window
#Hash Set
#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.