practice a little every day, paws crossed ♡
Software Engineering Fundamentals 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 1–30 of 625 results
- AMDEasySoftware EngineerBuild a UVM testbench: driver, monitor, scoreboard and coverage-driven closure
A hardware design verification question on building a SystemVerilog UVM testbench for an RTL block. It covers agents, drivers, monitors and scoreboards, checking results that may leave out of order, catching missing outputs, and using code and functional coverage to steer constrained-random stimulus toward sign-off.
Software Engineering FundamentalsTechnical Screen - AMDEasySoftware EngineerPCIe deep dive: TS1/TS2, LTSSM link training, TLP types and transaction ordering rules
A PCI Express protocol deep dive for a verification role. It covers TS1 and TS2 training ordered sets, LTSSM link training from Detect to L0 and through Recovery, TLP headers and the Posted, Non-Posted and Completion categories, and the ordering rules that decide when one transaction may pass another.
Software Engineering FundamentalsTechnical Screen - Abnormal AiMediumSoftware EngineerExtensible Security-Event Pipeline: Rule Suppression and Plugin-Based Enrichment
Tests your ability to design and implement an extensible, plugin-based security event processing engine supporting multi-tenant enrichments and dynamic rule suppression.
Software Engineering FundamentalsTechnical Screenobject-oriented-designsoftware-architecturemulti-tenancy - AddeparEasySoftware EngineerImplement a URL-Prefix Sliding-Window Alert Monitor
This problem tests the ability to manage time-based sliding windows and prefix-based path aggregation to trigger alerts based on request thresholds.
Software Engineering FundamentalsTechnical ScreenData StructuresHash MapSliding Window - Additive AiMediumSoftware EngineerExtract W-2 PDF Data and Evaluate It Against Reference JSON
This problem tests data structure manipulation, fuzzy matching logic, and evaluation metrics for comparing extracted AI document data against ground-truth schemas.
Software Engineering FundamentalsTechnical ScreenData ProcessingNormalizationEvaluation - AdiaEasyData ScientistCalculate Playback Counts per Stream
This question tests the ability to perform relational database joins and use aggregate functions (COUNT) with grouping to summarize event-level data.
Software Engineering FundamentalsTechnical ScreenSQLJoinsAggregation - AffirmEasySoftware EngineerDesign a High-Card Game with a Persistent Tie Pot
Design a high-card game in which tied rounds carry a persistent pot into later rounds, first for two players and then for many. Define card ownership, tie and exhaustion policies, deterministic shuffling, termination rules, extensible classes, and tests for tricky state transitions.
Software Engineering FundamentalsTechnical Screen - AffirmHardSoftware EngineerSimulate a High-Card Deck Game for Two Players, Then N Players
Model a shuffled 52-card game in which each round the higher top card wins both cards, then report the player with the most cards won. Starts with two players and generalizes to N players with uneven round-robin dealing, testing object design, rule clarification, and deterministic tests.
Software Engineering FundamentalsTechnical Screen - AgodaMediumSoftware EngineerCompute probability two arrivals meet within 15 minutes
This question evaluates understanding of continuous probability and geometric probability, focusing on independent uniform random variables and reasoning about time-window overlap.
Software Engineering FundamentalsTechnical Screen - AirbnbMediumSoftware EngineerDesign a banking ledger for deposits/withdrawals
This question tests your ability to design a robust database schema and service logic for a banking system, focusing on data integrity, transaction atomicity, and handling high-concurrency balance updates.
Software Engineering FundamentalsTechnical ScreenDatabase DesignConcurrencyTransactions - AirbnbMediumSoftware EngineerDesign an extensible request Retryer
This question evaluates a candidate's ability to design extensible and robust retry mechanisms, covering competencies in API/interface design, fault tolerance, backoff and jitter strategies, cancellation/deadline handling, idempotency considerations, and observability.
Software Engineering FundamentalsTechnical Screen - AirtableMediumSoftware EngineerDesign Extensible Undo and Redo for a Spreadsheet
This problem tests your ability to design a robust Command pattern architecture capable of handling complex state transitions, such as data deletions and dependency-aware recalculations, in a spreadsheet environment.
Software Engineering FundamentalsTechnical ScreenSystem DesignDesign PatternsCommand Pattern - AirtableMediumSoftware EngineerImplement a Connection Pool
This question evaluates a candidate's competence in resource management, object ownership and lifecycle handling, and safe reuse of pooled database connections.
Software Engineering FundamentalsTechnical Screen - AirwallexMediumFrontend EngineerName-Keyed Async Task Scheduler with Sequential Lanes, Cancel and Clear by Name
Implement a JavaScript task scheduler for async functions where tasks sharing a name run strictly in order while tasks with different names run concurrently. Follow-ups add cancelling the running task for a name and clearing every running and queued task by name, testing promise handling, race conditions and API design.
Software Engineering FundamentalsTechnical Screen - Akuna CapitalHardSoftware EngineerDesign a Tiered Expiring Item Store
Design a multi-tiered in-memory item store that enforces tier capacity limits, dynamic expiration, and deterministic retrieval using dual heaps and lazy cleanup.
Software Engineering FundamentalsTechnical ScreenData StructuresHeapsCache Design - Akuna CapitalMediumSoftware EngineerEvaluate a Hexadecimal Bitwise AND
Tests understanding of bitwise operations, hexadecimal-to-binary mapping, and manual nibble-level alignment without relying on arbitrary-precision integer conversions.
Software Engineering FundamentalsTechnical ScreenBit ManipulationStringsSystems Programming - Akuna CapitalMediumSoftware EngineerFind the Maximum Value in a Binary Tree Recursively
Implement a recursive binary tree traversal to find the maximum integer value in a tree, with careful handling of pointer safety, sentinel values, and edge cases like all-negative nodes.
Software Engineering FundamentalsTechnical Screenbinary-treerecursioncpp - AmazonMediumSoftware EngineerBuild a responsive grid of fixed boxes
This problem tests your proficiency in creating responsive UI layouts using CSS Flexbox or Grid and your ability to optimize rendering performance for large datasets using virtualization or efficient list rendering.
Software Engineering FundamentalsTechnical ScreenReactCSS GridFrontend - AmazonMediumSoftware EngineerControl Robot Charging with Repeated Polling and Exclusive Station Assignments
Design a repeatedly invoked robot-charging controller with strict battery thresholds, exclusive station assignments, waiting robots, and safe command retries.
Software Engineering FundamentalsTechnical Screen - AmazonHardSoftware EngineerDebug an Issue-Creation API Failure
This problem tests your systematic troubleshooting methodology for a distributed system, focusing on narrowing down the root cause of an API request failure.
Software Engineering FundamentalsTechnical ScreenDebuggingSystem ArchitectureDistributed Systems - AmazonMediumSoftware EngineerDescribe Linux and SQL experience
Prepare an engineering interview answer on Linux commands and SQL experience. Covers shell workflows, log debugging, file and process commands, SQL joins, aggregations, CTEs, window functions, and translating business questions into queries.
Software Engineering FundamentalsTechnical Screen - AmazonMediumSoftware EngineerDesign a basic credit card system
This problem tests object-oriented modeling and state management by requiring the design of a class structure that handles credit limits, transaction authorization, and balance tracking.
Software Engineering FundamentalsTechnical ScreenObject-Oriented DesignDomain ModelingSystem Architecture - AmazonMediumSoftware EngineerDesign a pizza ordering system
This question evaluates object-oriented design and software architecture skills, focusing on class modeling, responsibilities, relationships, state management, pricing, payment flows, and extensibility.
Software Engineering FundamentalsTechnical Screen - AmazonMediumSoftware EngineerDesign an Extensible Cinema Ticket Pricing Engine
Design an extensible cinema pricing engine with validated money and multiplier types, composable policies, explicit calculation and rounding, compatibility checks, versioned configuration, itemized quotes, and boundary tests.
Software Engineering FundamentalsTechnical Screen - AmazonMediumSoftware EngineerDesign an In-Memory Pub-Sub Model
This question evaluates object-oriented design and API modeling skills, knowledge of messaging/pub-sub semantics, concurrency and thread-safety, and the ability to reason about extensibility for retries, persistence, and asynchronous delivery.
Software Engineering FundamentalsTechnical Screen - AmazonMediumSoftware EngineerDesign an Object-Oriented Shopping Cart
Tests object-oriented design principles, domain modeling for monetary precision, extensible discount strategies, and thread-safe state mutations.
Software Engineering FundamentalsTechnical ScreenObject-Oriented DesignDesign PatternsConcurrency - AmazonMediumApplied ScientistDesign an advertiser metrics tracking platform
This question tests your ability to design a flexible, object-oriented system for ingesting, processing, and querying real-time advertising performance metrics.
Software Engineering FundamentalsTechnical ScreenSystem DesignOOPDesign Patterns - AmazonEasySoftware EngineerEvaluate an AI-Assisted Engineering Workflow
This question tests the candidate's ability to critically analyze the integration of AI tools into the software development lifecycle by balancing productivity gains with code quality and reliability.
Software Engineering FundamentalsTechnical ScreenAI-EngineeringWorkflow-DesignCode-Migration - AmazonHardSoftware EngineerExplain Aurora-style internals: WAL, MVCC, replication, recovery
This question tests your conceptual understanding of how log-structured storage engines, like Amazon Aurora, decouple the database log from the data pages to achieve low-latency replication and fast recovery.
Software Engineering FundamentalsTechnical ScreenDistributed SystemsDatabase InternalsStorage Engines - AmazonMediumFrontend EngineerImplement an Accessible Autocomplete Search Component
Design and implement an accessible, race-condition-resilient autocomplete search component in React or modern JavaScript, focusing on debounced queries, ARIA combobox semantics, and keyboard navigation.
Software Engineering FundamentalsTechnical ScreenReactAccessibilityFrontend
Affirm
Agoda
Airbnb
Airtable
Airwallex
Akuna Capital
Amazon