Amazon Software Engineer System Design Interview Questions
Practice the exact questions companies are asking right now.
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Design streaming error-log counting with moving average
Design a core component in a streaming system: Input: - Multiple upstream services continuously emit log events. - Each event includes at least: servi...
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 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 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...
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 delayed job scheduler (LLD)
Design a Delayed Job Scheduler (LLD) Design a service that schedules a job to execute X seconds in the future with second-level accuracy. Produce a lo...
Design globally consistent metadata service
System Design Prompt Design a global-scale metadata service used by many internal products. Goals / Requirements - Writes must be strictly consistent ...
Design device telemetry pipeline for real-time and batch
Design a distributed system that ingests telemetry from millions of devices and supports both: - Real-time analytics (near-real-time dashboards/alerts...
Design a package installer with dependencies
Design a package installer system (like a simplified OS/package manager) that installs packages while respecting dependency resolution. Requirements -...
Measure platform success and drive adoption
Org-Level Impact / Platform Leadership Prompt You own an internal infrastructure/data platform. Questions 1. How do you measure whether the platform i...
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...
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 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...
Design an extensible ticketing system
System Design: Extensible EventTicketSystem Context Design a ticketing platform that sells tickets for concerts, movies, and sports. The system must s...
Design a log filtering and analytics service
Design a Log Processing Service Context Build a service that ingests application logs from many services and provides low-latency search and analytics...
Design real-time top-K products service
System Design: Real-Time Top‑K Purchased Items Over Rolling Windows Design a real-time service that ingests purchase events and continuously outputs t...
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 keyboard and mouse input system
System Design: Input Processing and Text Reconstruction Context You are designing a cross-platform input processing layer for a text editor that recon...
Design a file search module like UNIX find
Design Task: Object-Oriented module that mimics UNIX find Context Design an object-oriented library that replicates the core functionality of the UNIX...
Design a basic task management system
Design a Simple Task Management Service Requirements Design a simple task management system that supports: 1. Add a new task with a unique ID and desc...