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.

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Compute total revenue from greedy VM rentals
You manage n VM types. VM type i starts with inventory a[i] (number of available instances). There are m customers arriving one by one. For each custo...
Maximize protected population and bitwise AND
You are given two independent coding problems. Problem 1: Maximize protected population after moving units There are n cities in a line (indexed 1..n)...
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...
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...
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...
Explain inheritance, polymorphism, constructors, destructors
OOP fundamentals Answer the following concept questions and provide a small example where requested: 1. Inheritance vs. polymorphism - Explain what...
Answer Amazon-style leadership deep dives
Behavioral / Leadership Prompt (Principal level) Prepare to answer deep-dive leadership questions with heavy follow-ups. Scenarios to cover - A failed...
Compute minimum passes over permutation
Question You are given an array shelf representing a permutation of the integers 1..n. Starting with target = 1, you repeatedly scan the array left-to...
Choose lock granularity for concurrent storage
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Print all odd numbers from an integer list
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Design globally consistent metadata service
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Find minimum total range-increment to sort
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Design a large-scale temperature sensor system
System design: large-scale temperature sensor collection and visualization Design a system to collect and display temperature data from a very large n...
Answer Dive Deep and Ownership in LP interview
Behavioral (Amazon LP): Dive Deep & Ownership The interviewer will probe your prior work and may connect follow-ups to the technical discussion. Promp...
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...
Answer two coding questions (SQL and DP)
Solve the following two coding tasks. Problem A (SQL) You are given a table: Employee(id INT, salary INT) Write a query that returns the second highes...
Answer behavioral questions about delivery and influence
Behavioral questions Prepare structured answers (e.g., STAR) to the following: 1. Complex problem, simple solution: Give an example of a complex probl...
Review an existing architecture for risks
Architecture Review Prompt You are given an existing production system (described verbally by the interviewer). Perform a design/architecture review. ...
Design multi-tenant ingestion and processing platform
System Design Prompt Design a multi-tenant data ingestion + processing platform used by thousands of internal teams. Requirements - Multi-tenant: each...
Design a replicated key-value store with quorums
Design a distributed system that replicates key–value pairs across multiple replicas. The interviewer wants to focus on replication, quorums, and fail...