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Software Engineer 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
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- 546
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- 11
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Showing 721–750 of 1189 results
- NetflixHardSoftware EngineerDesign an Ad Pacing System
This question evaluates a candidate's skill in designing large-scale, low-latency distributed advertising systems, including pacing algorithms, budgeting and spend tracking, concurrency control, event processing, and observability.
System DesignOnsite - NetflixHardSoftware EngineerDesign an ad frequency capping system
This question evaluates competency in distributed systems architecture, real-time stateful services, high-cardinality time-series data modeling, API design for low-latency decision paths, and operational monitoring including consistency and latency trade-offs.
System DesignOnsite - NetflixHardSoftware EngineerDesign an ads audience targeting system
This problem evaluates your ability to design a high-scale, low-latency system for filtering user profiles against complex, dynamic advertising audience segments.
System DesignTechnical ScreenScalabilityDistributed SystemsCaching - NetflixMediumSoftware EngineerDesign an ads data model
This problem tests your ability to design a scalable, reliable data schema for an advertising platform that must support high-throughput event ingestion and real-time analytical queries.
System DesignOnsiteData ModelingScalabilityOLTP vs OLAP - NetflixMediumSoftware EngineerDesign homepage viewport rendering with deduplication
This problem tests the ability to design a content-delivery service that optimizes viewport rendering through client-side requests, server-side deduplication, and efficient data retrieval patterns.
System DesignTechnical ScreenAPI DesignCachingHigh Availability - NetflixHardSoftware EngineerDesign viewport dedup for Netflix home page
Design viewport dedup for Netflix home page 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 - NetflixMediumSoftware EngineerModel ads demand data for reporting
This question tests the ability to design a robust data pipeline and schema for tracking ad performance metrics, focusing on handling event-level data, aggregations, and dimension consistency.
System DesignOnsiteData EngineeringData ModelingETL - NetflixMediumSoftware EngineerModel data for an ads platform
This question evaluates proficiency in data modeling and database schema design for advertising systems, including entity-relationship modeling, privacy-aware user identifier handling, and delivery/tracking log representation.
System DesignOnsite - NextdoorHardSoftware EngineerDescribe CAP, distributed systems, multithreading experience
This question evaluates practical and theoretical competence in the CAP theorem, distributed system architecture, and multithreaded concurrency, covering consistency models, partition tolerance, fault tolerance, scaling strategies, synchronization primitives, and debugging/performance techniques.
System DesignHR Screen - NextdoorMediumSoftware EngineerDesign a Job Scheduler That Can Scale by 100 Times
Design a distributed, asynchronous job scheduler that starts at modest traffic but can seamlessly scale up 100x. Evaluates API design, data storage trade-offs, worker coordination, task deduplication, and failure handling across scale boundaries.
System DesignTechnical ScreenDistributed SystemsJob SchedulerScalability - NextdoorMediumSoftware EngineerDesign a Neighborhood Newsfeed System
Design a privacy-aware, hyperlocal social feed that serves real-time updates and emergency alerts based on strict neighborhood boundaries.
System DesignTechnical ScreenFeed ArchitectureGeospatialDistributed Systems - NextdoorMediumSoftware EngineerDesign a Scalable Job Scheduler
This question evaluates system design skills focused on job scheduling, distributed systems concerns (state modeling, retries, idempotency), API and data-model design, fault tolerance, observability, and scalability within the System Design domain.
System DesignTechnical Screen - NielsenMediumSoftware EngineerDesign a URL Shortening Service: Code Generation, Storage and Fast Redirects
A system design question on building a URL shortening service that turns long links into short codes and redirects visitors quickly at large scale. It tests requirement scoping, capacity estimates, collision-free code generation across servers, storage and caching choices, and how the redirect path behaves under failure.
System DesignOther - NooksMediumSoftware EngineerHow would you throttle a crawler?
This question evaluates competency in scalable distributed system design, including rate limiting, request scheduling, concurrency control, fault tolerance, backoff/retry strategies, deduplication, and observability for networked crawlers.
System DesignOnsite - NotionMediumSoftware EngineerDesign a Shared Calendar Service
This problem tests the ability to design a scalable shared calendar system with support for recurring events, granular permission models, and notification scheduling.
System DesignOnsiteDatabase SchemaScalabilityAsynchronous Processing - NubankMediumSoftware EngineerDesign Chargeback Ingestion and CSV Delivery
Tests the ability to design an end-to-end financial transaction pipeline that ingests, deduplicates, and validates chargeback events, then reliably batches and delivers immutable CSV files to external card schemes via SFTP.
System DesignOnsiteFintechBatch ProcessingEvent-Driven - NubankEasySoftware EngineerDesign a chargeback ingestion and export system
This question assesses the ability to design a distributed system that reliably ingests high-volume transaction records and prepares them for periodic downstream delivery while ensuring data consistency and auditability.
System DesignOnsiteDistributed SystemsIdempotencyData Pipelines - NubankMediumSoftware EngineerDesign an Online Coding Competition Platform
Design a scalable online coding contest platform capable of securely executing untrusted user code, producing deterministic scores, and maintaining both a real-time top-100 leaderboard and exact rank lookups.
System DesignTechnical ScreenDistributed SystemsLeaderboardsSecurity - NuroMediumSoftware EngineerDesign a Reliable Job Scheduler
Design a fault-tolerant distributed job scheduler capable of handling delayed execution, job cancellation, timeout detection, and automatic worker retries.
System DesignTechnical ScreenDistributed SystemsJob SchedulerFault Tolerance - NuroMediumSoftware EngineerDesign a Scheduler for Weekly Self-Driving Simulation Jobs with Dependent Phases
A system design question about scheduling a weekly batch of about 10,000 self-driving car simulation cases, where each case runs several phases that depend on one another. It tests dependency tracking, dispatch to GPU and CPU worker pools, retries and leases, prioritization against a deadline, and observability.
System DesignTechnical Screen - NuroMediumSoftware EngineerDesign fast search for AV raw logs
This question tests the ability to architect a distributed storage and retrieval system capable of handling high-velocity, high-volume sensor telemetry data while supporting efficient time-range queries.
System DesignTechnical ScreenDistributed SystemsData EngineeringTime-Series - NuroHardSoftware EngineerSchedule CPU and GPU Video Processing
Design a distributed heterogeneous batch-processing system to schedule and execute multi-stage video pipelines across CPU and GPU worker clusters with fault tolerance, backpressure, and cost-efficient resource management.
System DesignOnsitesystem-designdistributed-systemsbatch-processing - NuroHardSoftware EngineerSearch Large Vehicle Records with Bounded Memory
Design a petabyte-scale search engine for autonomous vehicle records supporting multidimensional range queries, bounded-memory query execution, and stable streaming pagination.
System DesignOnsitesystem-designdistributed-systemsbig-data - OktaMediumSoftware EngineerDesign a Metrics Storage Platform
This question assesses the ability to architect a scalable time-series database capable of handling high-velocity metric ingestion, efficient long-term storage, and sub-second query performance.
System DesignTechnical ScreenTime SeriesScalabilityData Modeling - OnepayEasySoftware EngineerDesign a Discord-Style Communication Platform
This problem tests your ability to design a scalable real-time messaging architecture, focusing on handling message persistence, state synchronization for offline clients, and channel-based message distribution.
System DesignTechnical ScreenReal-timeScalabilityMessaging - OpenAIMediumSoftware EngineerDesign Bakery Chain Card Payments With Tips and Nightly Settlement
Design the payment system for a bakery chain's counter terminals, where a card is authorized for the purchase, a tip is added afterward, and each location's transactions are captured together in a nightly settlement batch that must scale as the chain grows.
System DesignOnsitesystem-designpaymentsidempotency - OpenAIMediumSoftware EngineerDesign CI/CD Build Caching
This problem evaluates your ability to design a distributed caching system for CI/CD pipelines, focusing on cache key strategies, invalidation, and storage scalability.
System DesignTechnical ScreenDistributed SystemsCI/CDCaching - OpenAIHardSoftware EngineerDesign Command Dispatch and Telemetry Reconciliation for Unreliable Devices
Design a resilient control plane and telemetry reconciliation system for millions of intermittently connected edge devices, ensuring safe command execution, idempotency, and accurate state tracking despite network unreliability.
System DesignTechnical ScreenDistributed SystemsIoTEdge Computing - OpenAIMediumSoftware EngineerDesign GPU Scheduling for a Video Generation Platform
This question tests your ability to design a distributed job scheduling system that manages heterogeneous GPU resources for computationally expensive, variable-length video generation tasks.
System DesignOnsiteGPU SchedulingDistributed SystemsLatency - OpenAIHardSoftware EngineerDesign GPU credit allocator
A multi-tenant GPU credit allocation system design (OpenAI software-engineer system-design screen): track and deduct GPU credits in real time across many nodes, issue/transfer/spend credits via idempotent APIs, and enforce budgets, hierarchical quotas, rate limits, and fair-share with scheduler integration. Covers prepaid vs postpaid, an immutable double-entry ledger with reservations, overspend prevention, failure recovery, scaling, and observability.
System DesignTechnical Screen
Netflix
Nextdoor
Nielsen
Notion
Nuro
Okta
OpenAI