Amazon Interview Questions
Practice 631 real Amazon interview questions for 2026. Covers all top categories — Coding & Algorithms, Behavioral & Leadership, Machine Learning, Data Manipulation (SQL/Python), and System Design — across Software Engineer, Data Scientist, Machine Learning Engineer, Product Manager, and Business Intelligence Engineer roles. Real Amazon interview questions from actual interviews with detailed solutions; use this collection for interview preparation that emphasizes shipping at scale, measurable impact, and the company’s Leadership Principles. Expect coding-heavy assessments for Software Engineer candidates: frequent tree and dynamic-programming problems, two-array optimization patterns, nested object/path lookups, and system-design prompts that mirror product flows (online Minesweeper, pizza-ordering, credit-card and shipping/cost systems), plus leadership and collaboration behavioral prompts. Data Scientist rounds concentrate on experimentation and metrics (A/B design, hand p-values, D7 retention SQL), RAG/recommender evaluation, and product-impact analyses. ML Engineer questions focus on production model design, LLM/agent concepts, reliability (cold start, training stability, online vs offline gaps), and large-scale detection pipelines. PM interviews stress customer-obsessed stories, ambiguity, Alexa product launches, and domain-specific data pipelines. Prepare with timed coding practice, end-to-end experiment writeups, STAR stories framed to Leadership Principles, and mock system-design sessions.

"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."

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"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."

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"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."
Explain attention and Transformers
Explain attention and Transformers Scaled Dot-Product Self-Attention, Transformer Architecture, and BERT vs GPT You are interviewing for a software en...
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 ...
Explain P-value, Confidence Interval, and Multiple Testing Adjustments
Explain P-Value, Confidence Interval, and Multiple Testing Adjustments You are running online A/B experiments to evaluate a new product launch. Assume...
Demonstrate Initiative Beyond Job Responsibilities
Demonstrate Initiative Beyond Job Responsibilities This behavioral prompt evaluates ownership, curiosity, and willingness to solve ambiguous technical...
Design an A/B Test for Dashboard Engagement Impact
A/B Test for Energy Dashboard Engagement A product team is launching a redesigned energy-usage dashboard in a consumer app and wants to measure whethe...
Find shortest subarray to restore order
Given an integer array, find the shortest contiguous segment which, if sorted in ascending order, makes the entire array non-decreasing. Return the le...
Maximize equal values via one subarray shift
Given an integer array A of length n, you may perform at most one operation: choose any contiguous subarray A[l..r] and add an integer Δ (which may be...
Late but Critical Colleague
Behavioral Scenario: Late but Critical Colleague You run a recurring bi-weekly cross-functional planning or metrics review meeting. A teammate who own...
Amazon Fit, Motivation & Leadership Principles
Amazon Product Manager Fit, Motivation, and Leadership Principles Prepare for an Amazon Product Manager behavioral onsite focused on motivation, role ...
Cloud Connection Issue Triage
Incident Triage Prompt: Customer-Reported Cloud Connection Issue You are the on-call Product Manager partnering with Support, SRE, and Engineering dur...
Compute shortest path with obstacles
Compute shortest path with obstacles You are given an m×n grid with nonnegative cell costs and blocked cells marked '#'. You may move up, down, left, ...
Place items into earliest fitting bins
Place items into earliest fitting bins You are given k items with sizes items[0..k-1] and n bins with initial capacities caps[0..n-1]. Process items i...
Maximize stock profit with constraints
Maximize stock profit with constraints Given an array prices of daily stock prices, you may make at most two complete transactions (buy then sell). Af...
Select maximum tasks before deadlines
Select maximum tasks before deadlines You are given a set of tasks, each with a positive duration and a deadline (lastDay). You may schedule tasks in ...
Design a reusable web dialog component
You are building a UI component library for a web application and are asked to design and implement a reusable dialog (modal) component. Requirements ...
Implement LRU cache with O(1) ops
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. ...
Count expressions reaching a target sum
Count expressions reaching a target sum Given an array of non-negative integers nums and an integer target T, assign either a + or − sign to each numb...
Explain Central Limit Theorem and Its Limitations
Explain Central Limit Theorem and Its Limitations Statistics Concepts and Disease-Test Evaluation Context You are assessing core statistical concepts ...
Optimize XGBoost for Predicting Marketing Outcomes
Optimize XGBoost for Predicting Marketing Outcomes Gradient-Boosted Trees for Marketing Outcome Prediction Context You’re building a model to predict ...
Assess Leadership Through Disagreement, Failure, and Risk Examples
Assess Leadership Through Disagreement, Failure, and Risk Examples Behavioral Leadership Deep-Dive (Data Scientist Onsite) Scenario A leadership-princ...