System Design interview questions

Showing 541–570 of 1311 results

• Design an hourly weather crawling serviceEasy

  This question evaluates a candidate's ability to design scalable, reliable data ingestion and delivery systems, covering competencies such as scheduling and crawling, data normalization, storage schema design, idempotent ingestion, rate limiting, retries, and monitoring.

  HubSpotSoftware EngineerSystem DesignOnsite
• Schedule and execute future paymentsMedium

  This interview question evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer for Schedule and execute future payments states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

  HubSpotSoftware EngineerSystem DesignOnline Assessment
• Design a multithreaded CPU 1D convolutionHard

  An IBM software-engineer take-home that asks you to design and implement a multithreaded CPU version of valid 1D convolution across three regimes: a tiny kernel (K=3), a kernel as long as the input (K=N, a single dot product), and a 100-thread cap. It evaluates parallel decomposition, scheduling, cache locality, false-sharing avoidance, SIMD vectorization, and reduction/synchronization choices.

  IBMSoftware EngineerSystem DesignOnline Assessment
• Design Multicloud Publishing and API GatewayMedium

  This question tests the ability to design a distributed system that reliably replicates data from a primary database to multiple cloud providers while exposing a unified, secure API gateway for external consumers.

  IllumioSoftware EngineerSystem DesignOnsite
• Design a Time-Series DatabaseHard

  This problem tests the ability to architect a high-throughput, horizontally scalable system for time-series data, balancing ingest performance with efficient range-query capability.

  IllumioSoftware EngineerSystem DesignOnsite
• Design an in-memory hotel booking systemMedium

  This question evaluates a candidate's ability to design in-memory data models, concurrency control mechanisms, and temporal reservation logic for booking systems.

  ImcSoftware EngineerSystem DesignTechnical Screen
• Design Idempotent Due-Date and Hold NotificationsMedium

  Design idempotent library notifications for upcoming and current due dates plus FIFO hold availability. Use stable business-event identities, transactional scheduling, atomic recipient claims, state rechecks, retries, reconciliation, and clear frontend distinctions among holds, offers, and checkouts.

  InstacartBackend EngineerSystem DesignOnline Assessment
• Design Idempotent In-App Availability and Due-Date NotificationsMedium

  Design asynchronous in-app availability alerts and due-date reminders with Celery, Redis, durable idempotency, versioned schedules, and crash recovery.

  InstacartSoftware EngineerSystem DesignOnline Assessment
• Design an Inventory Service with Reservations, Hot SKUs and Oversell PreventionMedium

  A system design question about an inventory management service that reserves stock while customers check out. It tests how a candidate prevents overselling under concurrent updates, handles hot SKUs, manages reservation expiry and idempotency, and supports partial fulfillment of multi-item orders.

  InstacartSoftware EngineerSystem DesignOnsite
• Design an Inventory Service with Stock Reservations That Prevents OversellingMedium

  A system design discussion of an inventory service that reserves stock for orders, centered on reservations, concurrent updates and preventing overselling. It probes how stock and holds are modeled, how a reservation stays atomic under contention, how abandoned holds are released and how hot items scale.

  InstacartSoftware EngineerSystem DesignTechnical Screen
• Design an inventory management systemMedium

  This question evaluates competency in system design, data modeling, distributed consistency, concurrency control, API design, idempotency, and scalability for backend inventory and reservation workflows.

  InstacartSoftware EngineerSystem DesignOnsite
• Design an inventory systemMedium

  This question evaluates a candidate's competency in designing inventory and distributed systems, covering stock tracking models, reservation and commit semantics, concurrency control, data modeling, API design, and real-time integrations.

  InstacartSoftware EngineerSystem DesignHR Screen
• Design and Release a Consistent Dark-Store Inventory SystemMedium

  Design a strongly consistent micro-fulfillment (dark-store) inventory system that handles reservations, stock reconciliation, and idempotent retries, alongside a zero-downtime deployment strategy.

  InstacartSoftware EngineerSystem DesignOnsite
• Design cloud storage with quotas and compressionHard

  This question evaluates a candidate's ability to design a multi-tenant cloud storage system, testing competencies in API design, quota accounting, compression strategies, distributed storage architecture (partitioning, replication/erasure coding), consistency models, security, versioning, and observability.

  InstacartSoftware EngineerSystem DesignOnline Assessment
• Design product catalog serviceHard

  This interview question evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer for Design product catalog service states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

  InstacartSoftware EngineerSystem DesignOnsite
• Design scalable inventory system and avoid racesHard

  This question evaluates a candidate's ability to design scalable, highly available distributed systems with robust concurrency control and consistency reasoning, covering architecture, data modeling, caching, message-based integration, and operational concerns like observability and disaster recovery.

  InstacartSoftware EngineerSystem DesignOnsite
• Reserve Cart Inventory Without OversellingMedium

  Design a high-throughput inventory reservation system that locks stock when items are added to a cart, prevents overselling during flash promotions, handles automatic reservation expiration, and scales seamlessly under a 10x traffic spike.

  InstacartSoftware EngineerSystem DesignOnsite
• Troubleshoot a production incident end-to-endHard

  Troubleshoot a production incident end-to-end 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.

  InstacartSoftware EngineerSystem DesignOnsite
• Scale a service you just built: schema trade-offs, new features, indexes, and searchMedium

  System design deep dive on scaling a service built earlier in the same interview loop. Compare schema options, extend the data model for reviews, ratings, and keyword search, and reason about query performance, indexing, pagination, and when a dedicated search engine is worth adding.

  IntuitSoftware EngineerSystem DesignOnsite
• Design Secure Token Authorization and Large-File TransferMedium

  Design a secure, enterprise-grade file transfer service that supports resumable multi-gigabyte uploads/downloads alongside fine-grained, token-based authorization and key management.

  J.P. MorganSoftware Engineer IISystem DesignOnsite
• Design a Rate Limiter: Algorithm Trade-offs, Scalability and AvailabilityMedium

  A high-level design question on a rate limiter that compares common limiting algorithms and then scales the chosen one across many servers while staying available. It tests trade-off reasoning about accuracy, memory, burst handling, shared state, and what happens when the limiter's own dependencies fail.

  J.P. MorganSoftware EngineerSystem DesignOnsite
• Design a Reliable Bank Payment SystemMedium

  Design a reliable bank payment system that remains correct across retries, crashes, duplicate requests, and ambiguous external-rail timeouts. Define idempotent APIs, a durable state machine and ledger, transactional handoff, safe reconciliation, invariant monitoring, auditability, and operator remediation.

  J.P. MorganSoftware EngineerSystem DesignOnsite
• Design a Scalable Notification SystemMedium

  This question assesses the ability to design a distributed, asynchronous notification system capable of handling high-throughput multi-channel messaging while maintaining strict delivery guarantees and rate-limiting policies.

  J.P. MorganSoftware EngineerSystem DesignOnsite
• Design a URL shortenerMedium

  This question assesses the ability to design a distributed URL shortening service, focusing on database schema design, collision resolution, and caching strategies for high-read throughput.

  J.P. MorganSoftware EngineerSystem DesignTechnical Screen
• Design an Auditable Internal AI ChatbotEasy

  Design an enterprise RAG-based AI assistant that enforces role-based document access control, bounds conversation history, mitigates prompt injection, and maintains an immutable, compliance-grade audit trail.

  J.P. MorganSoftware EngineerSystem DesignTechnical Screen
• Design an E-Commerce Shopping WebsiteMedium

  This problem tests your ability to design a scalable, consistent backend architecture for an e-commerce platform, focusing on inventory management, order processing, and high-read traffic handling.

  J.P. MorganSoftware EngineerSystem DesignTechnical Screen
• Design an Entitlement-Aware Agentic Portfolio WorkflowMedium

  This problem tests the ability to architect an LLM-based agentic system that balances autonomous task execution with strict role-based access control (RBAC) and auditability.

  J.P. MorganMachine Learning EngineerSystem DesignTechnical Screen
• Explain a Project Architecture End to EndMedium

  Tests your ability to present a production system architecture end-to-end, detailing data flow, ownership boundaries, database indexing and partitioning strategies, resilience patterns, and concrete architectural trade-offs.

  J.P. MorganSoftware Engineer IISystem DesignOnsite
• Improve shopping cart latency and stock notificationsEasy

  This question evaluates a candidate's ability to design scalable, low-latency e-commerce architectures and real-time notification mechanisms while reasoning about data consistency, concurrency control, and correctness under high traffic (including concerns like avoiding oversells).

  J.P. MorganSoftware EngineerSystem DesignOnline Assessment
• Optimize User-and-Region Queries on a Million-Row TableMedium

  Evaluate and design database access patterns, indexing strategies, and scaling techniques (partitioning, sharding, replication) for a financial user-profile system with high regional skew and frequent lookups.

  J.P. MorganSoftware Engineer IISystem DesignOnsite