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System Design Interview Questions
Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.
- 9403
- Questions
- 546
- Companies
- 11
- Topics
- 8
- Languages
Showing 31–60 of 517 results
- AmazonHardSoftware EngineerDesign a memory usage switcher with thresholds
This question evaluates system design and operational engineering skills in process memory management, runtime configurability, observability, and reliability, and belongs to the System Design domain; it primarily tests practical application with system-level conceptual reasoning.
System DesignTechnical Screen - AmazonMediumSoftware EngineerDesign a package installer with dependencies
This question tests your ability to design a system that manages complex dependency graphs, ensuring package integrity, version compatibility, and atomic installation operations.
System DesignTechnical ScreenGraphsDependency ResolutionTransactions - AmazonHardSoftware EngineerDesign a scalable parking lot system
Design a scalable parking lot system evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
System DesignTechnical Screen - AmazonMediumSoftware EngineerDesign an AI Fraud-Triage Agent Over a 1 TB/Day Payments Event Stream
Design a service where an AI agent investigates flagged payment events inside a stream running at roughly 1 TB of events per day, covering capacity math, where the agent sits relative to deterministic detection, and the cost and adversarial-input guardrails that keep it from becoming a liability.
System DesignTechnical Screensystem-designstreamingfraud - AmazonEasySoftware EngineerDesign an Amazon Locker Service
Tests object-oriented design and state-machine modeling for a self-service package locker station, focusing on parcel allocation, code expiration, and physical-vs-logical state consistency.
System DesignTechnical ScreenObject-Oriented DesignState MachineIoT - AmazonHardSoftware EngineerDesign an extensible ticketing system
This question evaluates software architecture and system-design competencies, covering extensibility patterns, concurrency control for high-throughput ticketing, transactional and idempotency guarantees, persistence/schema modeling, API design, and pluggable pricing strategies.
System DesignTechnical Screen - AmazonHardSoftware EngineerDesign an intersection traffic-light system
This question evaluates system design competency across real-time control and safety-critical logic, API and data modeling, sensor/actuator integration, and operational scalability for traffic-signal controllers.
System DesignTechnical Screen - AmazonHardSoftware EngineerDesign in-memory threshold switcher
This question evaluates a candidate's ability to design memory-aware control systems, covering skills such as hysteresis-based thresholding, dynamic runtime reconfiguration, thread-safe concurrency, low-overhead metric sampling, event-driven state notifications, and handling multi-process and failure edge cases.
System DesignTechnical Screen - AmazonHardSoftware EngineerDesign locker allocation service
This question evaluates a candidate's understanding of stateful system design, resource allocation strategies, concurrency control, API and data modeling, and fault tolerance in the context of real-time locker assignment.
System DesignTechnical Screen - AmazonMediumSoftware EngineerDesign pickup point planning for ride-hailing
Design a ride-hailing pickup-point planning system. Covers map snapping, candidate generation, driver and passenger routing, safety filtering, scoring objectives, app presentation, architecture, historical learning, and A/B metrics.
System DesignTechnical Screen - AmazonHardSoftware EngineerDesign real-time top-K products service
An Amazon software-engineer system-design screen: design a real-time service that ingests a stream of purchase events (customer_id, item_id, timestamp) and continuously serves the top-K most purchased items over multiple rolling windows (e.g. last 5 minutes, last 1 hour, 24 hours, and daily totals). The answer covers ingestion and partitioning, event-time windowing with watermarks, exact min-heap vs. approximate Count-Min-Sketch / Space-Saving top-K, late/duplicate/out-of-order handling, state and TTL, exactly-once fault tolerance, horizontal scaling, serving APIs, and latency-vs-accuracy trade-offs.
System DesignTechnical Screen - AmazonHardSoftware EngineerDesign secure multi-tier cloud infrastructure
This question evaluates cloud systems design competencies including multi-tier network architecture, IP addressing and capacity planning, security controls, centralized server management, shared storage trade-offs, and identity and access integration within a production-scale virtual private cloud.
System DesignTechnical Screen - AmperityMediumSoftware EngineerDesign a Metrics Collection System
Design an end-to-end distributed metrics collection and monitoring pipeline capable of ingesting millions of data points per second, handling label cardinality risks, and supporting low-latency time-series queries.
System DesignTechnical Screensystem-designtime-seriesdistributed-systems - AnrokHardSoftware EngineerDesign async batched key-value fetcher
This question evaluates understanding of designing asynchronous, batched request handling in a single-threaded event-loop, covering batching windows, key deduplication, response-to-callback correlation, consistency boundaries, error handling, timeouts/retries, cancellation, and backpressure.
System DesignTechnical Screen - AnthropicHardSoftware EngineerDesign Durable One-to-One Web Messaging at Large Scale
Design Web-only one-to-one messaging at 100 million DAU with durable deduplication, chat sharding, membership indexes, offline recovery, and replica-aware reads.
System DesignTechnical Screen - AnthropicHardSoftware EngineerDesign Large Model-Weight Distribution to GPU Workers
Design a high-throughput, fault-tolerant distribution platform that transfers multi-hundred-gigabyte model weights to tens of thousands of GPU worker nodes with integrity validation, progressive rollouts, and fast rollback capabilities.
System DesignTechnical Screensystem-designml-infrastructuredistributed-systems - AnthropicMediumSoftware EngineerDesign Peer-to-Peer Model Distribution Under a Shared Link Cap
Design an internal peer-to-peer artifact distribution system to deliver large model weights from a single seed machine to thousands of cluster workers subject to a shared aggregate upload-and-download network link limit.
System DesignTechnical Screensystem-designdistributed-systemsnetworking - AnthropicMediumSoftware EngineerDesign Telemetry Ingestion and Reconcile Metric Names
Design a scalable telemetry ingestion pipeline that standardizes and reconciles metric naming inconsistencies and schema drift across disparate client libraries, historical stores, and real-time query engines.
System DesignTechnical ScreenData InfrastructureTelemetryStream Processing - AnthropicHardSoftware EngineerDesign a Crash-Resilient LRU Cache
This question evaluates a candidate's competency in designing a crash-resilient LRU cache, including which data and ordering must be persisted, durability and recovery concerns, and trade-offs between latency and persistence.
System DesignTechnical Screen - AnthropicMediumSoftware EngineerDesign a One-on-One Chat Service
Design a highly available, low-latency one-on-one messaging system capable of delivering messages in real time, maintaining strict ordering, and handling offline synchronization.
System DesignTechnical Screensystem-designdistributed-systemsreal-time - AnthropicMediumSoftware EngineerDesign a Resilient Chat System
Design a resilient, distributed 1:1 and group messaging system focusing on durability guarantees, strict message ordering, robust fan-out, and reliable offline catch-up under partial failures.
System DesignTechnical Screensystem-designdistributed-systemschat-architecture - AnthropicHardSoftware EngineerDesign a concurrent web crawler
An Anthropic system design question: design and implement a concurrent web crawler, from a single-threaded baseline to manual threads, a thread pool and asyncio. It covers the URL frontier, deduplication across workers and redirects, robots.txt and per-host politeness, Retry-After backoff, completion detection, memory sizing, testing and monitoring.
System DesignTechnical Screen - AnthropicMediumSoftware EngineerDesign a distributed web crawler
This question tests the ability to design a scalable, fault-tolerant distributed web crawler that handles URL management, distributed coordination, and domain politeness.
System DesignTechnical ScreenDistributed SystemsScalabilityCaching - AnthropicMediumSoftware EngineerDesign a one-to-one chat system
This problem tests your ability to design a scalable, real-time one-to-one messaging system by addressing requirements for message ordering, delivery guarantees, and user presence.
System DesignTechnical ScreenWebSocketsMessagingScalability - AnthropicMediumSoftware EngineerDesign a prompt-sharing platform
This question assesses the ability to design a scalable content-sharing platform, focusing on data modeling, efficient retrieval of user-generated prompts, and the handling of concurrent access and permissions.
System DesignTechnical ScreenAPI DesignData ModelingScalability - AnthropicHardMachine Learning EngineerDesign a scalable MapReduce pipeline
Design a scalable MapReduce pipeline evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
System DesignTechnical Screen - AnthropicHardSoftware EngineerDesign a scalable network I/O service
This question evaluates a candidate's ability to design a scalable, highly available network I/O backend, testing competencies in distributed systems, storage architecture, CDN and caching integration, API and data model design, capacity planning, failure handling, observability, and security.
System DesignTechnical Screen - AnthropicHardSoftware EngineerDesign a scalable, reliable system
The prompt evaluates competence in large-scale distributed system design, covering storage architecture, consistency and replication strategies, caching, APIs and data models, operational reliability, security, and cost/capacity planning.
System DesignTechnical Screen - AnthropicHardSoftware EngineerDesign production-ready dedup service
This question evaluates system design and distributed storage competencies, focusing on scalable file deduplication, content-defined chunking, metadata and index design, multi-tenant architectures, and operational reliability across regions.
System DesignTechnical Screen - AnthropicMediumSoftware EngineerHow would you scale batch image pipelines?
This problem evaluates your ability to design a distributed, fault-tolerant batch processing system for high-throughput image transformation tasks.
System DesignTechnical ScreenDistributed SystemsScalabilityBatch Processing
Amazon
Anthropic