Amazon Data Manipulation (SQL/Python) Interview Questions
Practice 629 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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Solve two string problems
You are asked to solve the following two coding problems. 1. Count unique Morse code translations You are given an array of lowercase English w...
Find recommended friend pairs by shared listening
Problem (SQL) You work on a music app and want to recommend new friend connections based on listening similarity. Tables Assume the following schemas:...
Explain overfitting, regularization, and LLM techniques
You’re in an ML interview. Answer the following conceptual questions clearly and concisely, using examples where helpful: 1) Model fit - What is overf...
Describe complex projects, failures, and pivots
In a software engineering internship interview, you may be asked a set of behavioral questions about project complexity, decision-making, failure, and...
The Most Comprehensive Amazon PM Questions
Behavioral & Leadership Interview Prompt Set: Amazon Product Manager Onsite Prepare for a Product Manager onsite behavioral interview using Amazon-sty...
Answer common internship behavioral questions
You have ~25–30 minutes for behavioral questions (with possible follow-ups). Prepare strong, concrete answers (internship-level scope is fine) for: 1....
Describe past NLP work and collaboration
Scenario In an initial phone screen, the interviewer asks you to introduce yourself, then drills into your resume. Questions (answer using concrete ex...
Design a multi-size storage locker system
Design a storage-locker system that supports storing and retrieving items when lockers come in multiple sizes. Scenario A company operates self-servic...
Design a cloud database write path and recovery
System Design (Engine-level): Write Path + Crash Recovery Design a core subsystem for a cloud-native relational database (Aurora-like) where compute i...
Answer Leadership and GenAI Behavioral Questions
Prepare structured behavioral interview answers for the following prompts. Use specific real experiences, quantify impact when possible, and be ready ...
How to evaluate adding video ads in a game
Case study: Evaluate adding video ads to a mobile game You are the Data Scientist for a free-to-play mobile game. The product team wants to add video ...
Maximize Value Under a Budget
You are given an array of items. Each item has a price and a value, and you are given a total budget. Each item can be purchased at most once. Impleme...
Design a distributed job scheduler service
Design a distributed job scheduler service Design a horizontally scalable, multi-tenant job scheduler service that supports both one-off / ad-hoc jobs...
Return all valid word-break sentences
Given a string s and a dictionary of strings wordDict, insert spaces into s to form a sentence such that every token is in wordDict. Return all possib...
Solve tree and DP problems
This coding round contained two algorithm questions: 1. Deepest shared ancestor in a binary tree You are given the root of a binary tree and two ...
Compute join counts and window ranks
Given the following small schema and data, answer all parts precisely and justify each count/output. Tables and rows: Customers(cust_id INT PRIMARY KE...
Design a replicated cloud storage service
Design the internals of a cloud storage service (object/blob storage). Focus on storage/infra concerns rather than end-user features. Cover the follow...
Describe how you reduced measurable cost
Behavioral question (focus on ownership/delivery): > Tell me about a time you identified and solved a problem that caused measurable cost (e.g., cloud...
Design an intersection traffic-light system
System Design: Traffic-Light Control for a Multi-Road Intersection Context Design the software and systems for controlling a signalized, multi-approac...
Design idempotent daily loads with deduping
You need to load the last 7 days of orders into a large fact table from a noisy staging feed. Assume today is 2025-09-01. Requirements: idempotent rer...