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.

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"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."

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"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 Overfitting and Underfitting in Machine Learning
Explain Overfitting and Underfitting in Machine Learning ML Fundamentals and Computer Vision: Core Concepts Instructions You are interviewing for a da...
Explain Statistical Outputs to Non-Technical Stakeholders
Explain Statistical Outputs to Non-Technical Stakeholders A/B Test Dashboard Interpretation and Core Statistics Concepts Scenario You are reviewing an...
Describe Your Professional Journey and Leadership Experiences
Describe Your Professional Journey and Leadership Experiences Behavioral & Leadership Interview Prompt (Data Scientist — Technical Phone Screen) Scena...
Quantify build-vs-buy training decision
Quantitative Decision Framework for Selecting a New Employee Training Program Context Your company must choose one of three ways to launch a new emplo...
Design and analyze pricing-page A/B test
AB Test Plan: New Pricing-Page Layout Context: You will run a 2-arm online experiment on a pricing page. The primary metric is user-level paid convers...
Prove new allocation outperforms manual baseline
Prove an Automated Package-Allocation System Outperforms Manual Baseline Context You work in a large last‑mile logistics network evaluating a new auto...
Design causal study for reminder impact
Observational Causal Study: Reminder Program With Staggered Market × Channel Launch Context You are evaluating the causal impact of medication-subscri...
Implement list overlap and dense-ranked word frequencies
Part A — Multiset overlap count Implement count_overlap(a: List[int], b: List[int]) -> int that returns the size of the multiset intersection of a and...
Explain ML statistics and model design concepts
Explain ML statistics and model design concepts Technical Phone Screen: Theory + System Design Probability and Statistics 1. Define a moment generatin...
Answer core behavioral questions for data roles
Answer core behavioral questions for data roles You are interviewing directly with a hiring manager who is known to be very selective. The interview i...
Explain weight initialization methods and goals
Explain why weight initialization matters in deep neural networks. Then describe common initialization methods (such as random normal/uniform, Xavier/...
Explain Transformers and MoE in LLMs
You are interviewing for a role working with large language models (LLMs). Explain the following concepts and how they relate to building and scaling ...
Alexa Domain-Knowledge Data Pipelines
Alexa Domain-Knowledge Data Pipelines: Holidays and Animals Design an end-to-end knowledge pipeline for a global voice assistant such as Alexa to answ...
Launching New Amazon Services
Product Case: Launch New Amazon Services You are a Product Manager evaluating how Amazon could launch three new services: a restaurant table-booking a...
Answer core probability and inference questions
You are interviewing for a Data Scientist role. Explain/derive the following statistics fundamentals. 1. State the Central Limit Theorem (CLT). What c...
Design a weighted random value generator
Weighted random value generator Design a generic component that stores values with integer weights and can return a random value with probability prop...
Describe times exceeding and missing expectations
Behavioral Prompt: Exceeding and Falling Below Expectations Context You are interviewing for a Software Engineer role in a technical screen focused on...
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...
Detect words formed by multiple dictionary parts
Given an array words of up to 100,000 non-empty lowercase strings (total characters ≤ 1,000, 000), return all strings that can be formed by concatenat...
Solve server updates and grid inconvenience minimization
1) You are given an integer array server of length n, where server[i] is the number of requests the i-th server can process. Over multiple days, you r...