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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
- Questions
- 546
- Companies
- 11
- Topics
- 8
- Languages
Showing 2311–2340 of 5874 results
- GoogleMediumSoftware EngineerDesign a waitlist system with top/bottom K
This problem tests your ability to design a dynamic waitlist using efficient data structures to support logarithmic time complexity for insertions, deletions, and ranking operations.
Software Engineering FundamentalsTechnical ScreenData StructuresDesignComplexity Analysis - GoogleMediumSoftware EngineerDesign an Agent for Internal Document Search
Design an enterprise search agent that provides grounded, cited answers over internal knowledge repositories while strictly enforcing access control lists (ACLs) and handling prompt injection.
ML System DesignTechnical ScreenRAGSearch SystemsLLM Agents - GoogleMediumSoftware EngineerDesign an Employee Coverage Timeline
This problem tests your ability to handle overlapping intervals and state tracking using a sweep-line algorithm combined with a mapping structure.
Software Engineering FundamentalsOnsiteSweep-lineIntervalsAlgorithms - GoogleMediumSoftware EngineerDesign an Enterprise AI Adoption Agent for a Global Company
Prepare for a Google system design interview about design an enterprise ai adoption agent for a global company. This question focuses on requirements, architecture, trade-offs, reliability, and follow-up discussion areas.
System DesignOnsite - GoogleMediumSoftware EngineerDesign an LLM Agent for Manufacturing: Production Status, Work Orders and Quotes
Design an LLM-powered agent for a manufacturing business that checks production progress, opens work orders and gives customers price quotes. Probes tool design for reads and writes, how to stop the agent from inventing statuses or prices, and how to enforce user permissions outside the model.
ML System DesignTechnical Screen - GoogleMediumSoftware EngineerDesign an Offline-First Client That Syncs Edits and Resolves Multi-Device Conflicts
Design the client side of an app where users keep editing data offline, store every edit locally, and sync with the server when the network returns. Covers the local data model and edit queue, a sync protocol that is safe to retry, and detecting and resolving version conflicts when several devices change the same data.
System DesignOnsite - GoogleMediumSoftware EngineerDesign an Online Coding Judge Platform
This question tests the ability to design a high-throughput, secure, and fault-tolerant distributed system capable of executing untrusted user code in isolated environments.
System DesignOnsiteScalabilitySecurityQueues - GoogleEasySoftware EngineerDesign an ads retrieval service using a heap
This question tests the ability to design a retrieval system using a priority queue and the implementation of efficient operations to maintain a sorted collection of ad candidates.
Software Engineering FundamentalsOnsiteHeapPriority QueueData Structures - GoogleMediumSoftware EngineerDesign an editable sequence with marker
This question evaluates understanding of mutable ordered sequence data structures, marker semantics and invariants, API and data model design, and algorithmic time-complexity trade-offs for insert, delete, and move operations.
Software Engineering FundamentalsOnsite - GoogleHardSoftware EngineerDesign an elevator control system
This question evaluates system design skills including architectural modeling of components, scheduling and concurrency control, state-machine design, and fault-tolerance for real-time control systems, and falls under the System Design domain.
System DesignOnsite - GoogleHardSoftware EngineerDesign anomaly detection and response platform
This question evaluates a candidate's competency in designing end-to-end ML-driven systems that handle large-scale, low-latency OS snapshot ingestion, binary anomaly detection, decisioning and action orchestration with multi-tenant security, auditability, and failure rollback.
ML System DesignTechnical Screen - GoogleMediumSoftware EngineerDesign at-least-once notification delivery
This question evaluates expertise in reliable distributed systems design, including at-least-once delivery semantics, idempotency and deduplication strategies, retry and dead-letter handling, API and message-schema design, ordering and out-of-order handling, and scalability for high-throughput multi-tenant notification platforms.
System DesignTechnical Screen - GoogleEasySoftware EngineerDesign compressed vector and compute dot product
This problem tests your ability to design a memory-efficient data structure for sparse or repetitive vector data and implement an arithmetic operation without fully decompressing the representation.
Coding & AlgorithmsOnsiteArraysTwo PointersData Structures - GoogleHardSoftware EngineerDesign deduplicated file storage on filesystem
This question evaluates system design and storage engineering competencies, including multi-tenant isolation, authentication and authorization models, content-addressable storage and deduplication, reference counting and garbage collection, concurrency control, API surface design, and scaling across nodes using only filesystem primitives.
System DesignTechnical Screen - GoogleHardSoftware EngineerDesign distributed log storage service
This question evaluates a candidate's expertise in designing distributed storage systems, covering partitioned append-only logs, high-throughput writes and reads, replication, retention, indexing, compaction, leader/follower roles, and recovery mechanisms.
System DesignTechnical Screen - GoogleHardSoftware EngineerDesign distributed transactions protocol
This question evaluates a candidate's understanding of distributed transactions, coordination protocols, fault tolerance, consistency, and reliability across microservices and databases.
System DesignTechnical Screen - GoogleHardSoftware EngineerDesign executable notebook service APIs
This question evaluates a candidate's competence in designing secure, scalable systems for executing user-supplied code, covering API design, sandboxing and isolation, dependency management, resource limits, scheduling, and streaming proxies for logs/results.
System DesignTechnical Screen - GoogleHardSoftware EngineerDesign high-throughput event subscription system
This question evaluates a candidate's ability to design scalable, fault-tolerant event ingestion and subscription architectures, covering distributed systems, high-throughput messaging, content-based filtering, multi-tenant isolation, API/webhook design, delivery semantics, backpressure, sharding, security, and operational observability.
System DesignTechnical Screen - GoogleHardSoftware EngineerDesign key management service
This question evaluates system design and security competencies—specifically cryptographic key lifecycle management, HSM integration, access control, auditing, multi-tenant isolation, and scalability—within the System Design domain.
System DesignTechnical Screen - GoogleMediumSoftware EngineerDesign nearest-available-taxi lookup with updates
This question assesses the ability to design a high-concurrency geospatial system that maintains real-time state for moving entities and supports low-latency queries.
System DesignTechnical ScreenGeospatialScalabilityCaching - GoogleHardSoftware EngineerDesign quota enforcement for high concurrency
This question evaluates a candidate's understanding of distributed system design and engineering competencies related to quota enforcement, high-throughput rate limiting, consistency models, sharding, and concurrency control under very high QPS.
System DesignTechnical Screen - GoogleHardSoftware EngineerDesign relational-to-NoSQL migration pipeline
This question evaluates a candidate's competency in designing a relational-to-NoSQL migration pipeline, covering distributed systems and data engineering concepts such as consistent snapshotting, change-data-capture, per-key ordering, idempotency, exactly-once behavior, schema evolution, partitioning, and operational reliability.
System DesignTechnical Screen - GoogleMediumSoftware EngineerDesign server allocation for multi-type nodes
This question evaluates understanding of scalable resource-allocation and matching systems, encompassing data-structure and index design, availability tracking, fragmentation minimization, concurrency control, and failure handling for large node pools.
Coding & AlgorithmsTechnical Screen - GoogleMediumSoftware EngineerDesign set with O(1) random access
This question evaluates skill in designing a composite data structure that supports average O(1) insertion, deletion, and uniform random access, and tests understanding of hashing, indexing, randomness, and concurrency control.
Coding & AlgorithmsTechnical Screen - GoogleHardSoftware EngineerDesign street-view image ingestion and storage system
This question tests the ability to design a high-throughput, fault-tolerant ingestion pipeline for massive geospatial media, focusing on distributed storage strategies, data integrity, and efficient retrieval at scale.
System DesignTechnical ScreenScalabilitySpatial IndexingData Ingestion - GoogleMediumSoftware EngineerDesign structure for insert and k-th largest
This problem tests your ability to design a dynamic data structure that maintains elements while efficiently querying the k-th largest value, necessitating a balance between insertion speed and retrieval performance.
Coding & AlgorithmsOnsiteData StructuresHeapBinary Search Tree - GoogleHardSoftware EngineerDesign viewing history and resume service
This question evaluates a candidate's ability in large-scale system design, covering distributed state management, API design, data modeling for per-user progress, idempotent update semantics, cross-device synchronization, and privacy/compliance considerations.
System DesignTechnical Screen - GoogleMediumSoftware EngineerDetermine All Players with Fixed Rankings
Determine which players in a competition have a uniquely determined ranking given a set of pairwise match outcomes.
Coding & AlgorithmsOnsitegraphbfsdfs - GoogleMediumSoftware EngineerDetermine Reporting Relationships
This question evaluates understanding of hierarchical relationship modeling, transitive inference across relations, and dynamic data-structure design for tracking manager and peer links.
Coding & AlgorithmsTechnical Screen - GoogleMediumSoftware EngineerDetermine Whether a Word Exists in a Graph
This problem tests the ability to implement a depth-first search (DFS) with backtracking to find a specific sequence within a grid, while managing state to avoid reusing the same path.
Coding & AlgorithmsOnsiteDFSBacktrackingGraphs
Google