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."
Implement two array-cost minimization algorithms
Implement two array-cost minimization algorithms. 1) Minimize merge cost: Given a list of positive integers workloads representing task sizes, you may...
Maximize weighted subsequence pairs with wildcards
You are given a string s of length n consisting only of characters '0', '1', and '!'. Each '!' can be replaced by either '0' or '1'. For the final bin...
Find top-k lottery winners by spending
You are building a lottery system where each user’s chance of winning is linearly proportional to how much they spent (e.g., user with spend s has wei...
Determine reachability and optimize task scheduling
Question LeetCode 780. Reaching Points: Given four integers a, b, c, d (1 <= a, b, c, d <= 1000). Starting from (a, b) you may repeatedly apply either...
Solve interval deletion and GCD subarray problems
1) Given n closed intervals [li, ri] on a number line, remove the fewest intervals so that among the remaining intervals there exists at least one int...
Optimize with a cache/hash map
Question This is a follow-up to your existing implementation (for example, a script that repeatedly resolves file paths or parses license strings into...
Design a URL shortening platform
Design a Scalable URL Shortening Platform Context Build a Bitly-like URL shortener that maps long URLs to short codes and performs HTTP redirection re...
Maintain real-time top-K products from events
Design a data structure/class that ingests a stream of product events and returns the current top‑K products at any time. Events include {timestamp, p...
Serialize and deserialize a binary tree
Problem Design two functions to serialize and deserialize a binary tree. - Serialize: convert a binary tree into a single string. - Deserialize: recon...
Design a basic credit card system
Design an object-oriented credit card system for a retail bank. Focus on clean class design rather than distributed infrastructure. At a minimum, the ...
Describe a tough trade-off decision
Behavioral: Tough Trade-off Under Time Pressure (Software Engineer, Technical Screen) You will be asked to describe a specific instance where you made...
Design an Online Minesweeper Platform
Design an online Minesweeper platform for web and mobile users. Requirements: - A signed-in user can start a new game with standard or custom board si...
Solve array duplicates and two-type subarray
Coding questions Solve the following array problems. Problem 1: Check for duplicates Given an integer array nums, return true if any value appears at ...
Compute product excluding index without division
Given an integer array nums, return an array ans where ans[i] equals the product of all elements of nums except nums[i], without using division. Achie...
Design a fraud detection system
System Design: Real-Time Payment Fraud Detection Context Design a real-time fraud detection system for online payments (card-not-present). The system ...
Implement LRU cache with O(1) ops
Design and implement a fixed-capacity cache supporting get(key) -> value and put(key, value) in O( 1) average time. When capacity is reached, evict th...
Describe a complex problem you solved
Behavioral questions 1. Complex problem: Tell me about a time you worked on a complex technical problem. - What made it complex (scale, ambiguity, ...
Demonstrate Leadership Principles in Projects
Question This Amazon Software Engineer behavioral/technical screen asks you to demonstrate the Amazon Leadership Principles through concrete examples ...
Count partitions and equal-cost packages
Question Given a string itemCategories, count the number of ways to partition it into exactly two contiguous non-empty substrings (a prefix and a suff...
Implement memcpy with misaligned addresses
Implement a C-style memcpy that correctly handles misaligned source/destination addresses. Task Write a function: `c void my_memcpy(void dst, const vo...