Amazon Software Engineer Interview Questions
Amazon Software Engineer interview questions typically assess both algorithmic craftsmanship and fit with Amazon’s culture. What’s distinctive is the dual emphasis: expect intense coding and problem-solving rounds (data structures, algorithms, complexity and correct edge-case handling), a system-design evaluation for more senior roles, and behavioral deep-dives tied to Amazon’s Leadership Principles. The interview loop often includes an online assessment or phone screen, followed by a multi-interviewer loop that features a Bar Raiser whose role is to ensure high hiring standards. Clear communication, tradeoff reasoning, and testable, clean code are repeatedly evaluated. For interview preparation, focus on three threads: timed coding practice on medium-to-hard problems with careful explanation of complexity and edge cases; concise STAR-format behavioral stories that map directly to Leadership Principles and show impact; and system-design sketches for senior levels that justify choices around scalability, availability, and cost. Run mock interviews to practice speaking clearly, articulate tradeoffs, and rehearse writing and testing code under time pressure. Recruiters will guide scheduling, but sustained, focused practice gives the best chance to demonstrate both technical depth and cultural fit.

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Minimize Circular Redistribution Cost
You are given n warehouses arranged in a circle. products[i] is the number of products initially stored at warehouse i. You may choose exactly one glo...
Describe Deadline, Mistake, Problem-Solving, and AI Experiences
You are interviewing for a Software Engineer (Intern) role at Amazon, in an on-site loop of two back-to-back 60-minute rounds. Each round mixes a beha...
Minimum Drone Delivery Time on a Ring of Hubs
A fleet operator runs a single delivery drone over a set of m hubs arranged in a circle (a ring). The hubs are numbered 1 through m in clockwise order...
Design a Ride-Hailing Matching System
Design a ride-hailing matching system similar to a taxi or rideshare application (e.g. Uber, Lyft, DiDi). The interview focuses on the driver-location...
Design streaming error-log counting with moving average
Design a core component in a streaming system: Input: - Multiple upstream services continuously emit log events. - Each event includes at least: servi...
Minimize Branch Merge Conflicts
You are given several feature branches that must all be merged into the main branch. Each branch contains a sequence of commits, and each commit modif...
Minimum Bills and Coins to Make Change
You are building the change-dispensing logic for a self-checkout cash register. Given a purchase change amount (in dollars, e.g. 6.35), compute the mi...
Find the Most Common Visit Pattern
You are given a list of web visit logs. Each log record contains userId, timestamp, and page. For each user, sort that user's visits by timestamp. A l...
Implement Event Filtering and Queue Routing
An upstream event pipeline continuously emits events as JSON strings. You need to implement an in-memory routing service that decides which downstream...
Merge Multiple Sorted Arrays
You are given n sorted arrays of integers. Merge all arrays into one sorted array and return it. Requirements: - Preserve duplicate values. - Handle e...
Replace Delimited Tokens in a String
Given an input string s and a dictionary replacements mapping keys to replacement strings, replace every placeholder in s with its corresponding value...
Evaluate IP Access Rules
You are given a list of IPv4 access-control rules. Each rule consists of: - an action: allow or deny - a CIDR block such as 192.168.0.0/16 You are als...
Find Unique Target-Sum Pairs
Given an integer array nums and an integer target, return all unique pairs of values whose sum equals target. Requirements: - Each returned pair shoul...
Find Valid IP Addresses in Files
You are given an absolute or relative path to a directory on the local file system. Write a program that recursively traverses every subdirectory unde...
Design delayed job scheduler (LLD)
Design a Delayed Job Scheduler (Low-Level Design) Design a service that schedules a job to execute X seconds in the future with second-level accuracy....
Implement a Single-Node Priority Pub/Sub
Implement a simplified in-memory publish-subscribe system that runs on a single machine. The system should support users subscribing to topics with a ...
Explain conflict, ownership, and AI use
Question Prepare structured answers for an Amazon-style behavioral interview (intern / early-career software engineer) that probes leadership-principl...
Implement Cache and Rotate Matrix
Solve the following two independent coding tasks. Task 1: Implement an LRU Cache Design a data structure LRUCache that stores integer keys and integer...
Solve Two Array Optimization Problems
This online assessment included two coding problems. Problem 1: Maximize protected city population You are given: - an integer n - an array population...
Solve Two OA Algorithm Problems
The post describes two separate coding questions from an online assessment: 1. Greedy deletion by minimum value Given an integer array nums, repeate...