Software Engineering Fundamentals interview questions

Showing 1141–1170 of 1208 results

• Build an Event-Driven Folder BrowserEasy

  This problem tests your ability to model hierarchical data structures and design an efficient state management strategy for an interactive UI component.

  UiPathFrontend EngineerSoftware Engineering FundamentalsOnsite
• Implement a Lightweight ETL Pipeline Scheduler in PythonMedium

  Implement a small Python scheduler that registers ETL tasks with dependencies and runs a pipeline so that each task executes only after its upstream tasks succeed. It tests clean interface design, dependency ordering with validation, failure and retry handling, and clear reporting of what happened to each task.

  UnitySoftware EngineerSoftware Engineering FundamentalsOnsite
• Describe Your Python ExperienceMedium

  Present Python experience through maintained production work, correctness practices, operational judgment, and honest tool-selection limits.

  UpstartSoftware EngineerSoftware Engineering FundamentalsHR Screen
• Build a staged banking service: ATM cash, statements, transfers, fees, slow transfersMedium

  A staged, roughly two-hour coding exercise to build a banking service: ATM balance, deposits and withdrawals, per-account statements that include failed transactions, instant transfers, external transfers that charge a fee, and slow transfers that hold funds until they arrive. It tests exact money handling, ledger design and extensible code.

  ValonSoftware EngineerSoftware Engineering FundamentalsOnsite
• Loan Ledger: Fee-First Payments and Out-of-Order Event ProcessingMedium

  Implement loan accounting handlers in Python where fees increase the fee balance and payments pay down fees before principal, then build a ledger that accepts payment and fee events out of order. It tests keeping events ordered by accounting sequence, updating later balances without reprocessing the whole history, handling ties and overpayments, and analyzing per-call cost.

  ValonSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Subscription Ledger: Credits-First Charges With Backdated EventsMedium

  Implement billing event handlers where credits pay down usage before the subscription fee, then build a ledger that accepts charge and credit events out of chronological order and recomputes only the balances that a backdated event actually invalidates.

  ValonSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Deduplicate a File Exactly When Distinct Lines Exceed MemoryMedium

  Design exact external-memory global line deduplication with sorting or partitioning, full equality checks, and optional first-occurrence order preservation.

  VantaSoftware EngineerSoftware Engineering FundamentalsOnsite
• Build a React dashboard with filtersMedium

  This problem tests your ability to build a modular React dashboard that handles state synchronization, efficient list filtering, and semantic UI structure.

  VerkadaFrontend EngineerSoftware Engineering FundamentalsOnsite
• Implement a Camera List UI from a Defined Visual ContractMedium

  Implement a responsive React camera-card list with fixed preview ratios, status and missing-image states, semantic selection, and a clear visual-verification method.

  VerkadaFrontend EngineerSoftware Engineering FundamentalsTechnical Screen
• Implement a JavaScript frame player controllerMedium

  Implement a JavaScript frame player controller evaluates requirements, assumptions, structured reasoning, trade-offs, and verification in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

  VerkadaSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Implement a Middle-Tier REST API Server for Camera Log Ingestion and QueriesMedium

  Implement a middle-tier REST API server that lets cameras upload their logs and lets users request them back, with fake logs supplied by the tests. It tests endpoint design, request validation and status codes, storage organized for time-range queries, and thread-safe request handling.

  VerkadaSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Streaming Python Parser for Key-Value Log Lines with Quoted and Escaped ValuesMedium

  Write a Python program that streams a multi-gigabyte host log file and parses each line into a dict holding its timestamp and key-value fields. It tests tokenizing quoted values with spaces, inner equals signs and escaped quotes, handling two timestamp formats, skipping blank lines, and keeping memory constant with a generator.

  VerkadaSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Build a Paginated Provider Search Backend and React Filter UIMedium

  This problem tests full-stack proficiency, focusing on efficient database querying with optional filters, secure backend API design, and responsive frontend state management.

  VersemedicalSoftware EngineerSoftware Engineering FundamentalsOnsite
• Find Strictly Decreasing Forecast Windows for Equatorial CitiesMedium

  This problem tests the ability to handle API integration, data stream processing, and sliding window logic while managing error handling and rate-limiting constraints.

  VersemedicalSoftware EngineerSoftware Engineering FundamentalsOnsite
• Java Fundamentals: Polymorphism and Monolith Versus MicroservicesMedium

  A Java fundamentals question pair: explain polymorphism, including overriding, dynamic dispatch and overload resolution, and compare monolithic and microservices architectures. It tests precise language mechanics, concrete examples, and balanced reasoning about deployment, scaling, consistency and operational trade-offs.

  VisaSoftware EngineerSoftware Engineering FundamentalsOnsite
• Build a Tool-Using Weather AssistantHard

  Design a grounded weather assistant with typed model tool calls, server-side credentials, validated live data, provenance, and safe failure behavior.

  VoleonMachine Learning EngineerSoftware Engineering FundamentalsTechnical Screen
• Explain a Sorting Algorithm Such as Merge Sort: Mechanics, Correctness, ComplexityMedium

  Explain a sorting algorithm of your choice, such as merge sort, in a technical screen for a quantitative role. Tests whether you can describe the split and merge steps, trace a small example, argue correctness, derive time and space complexity, and discuss stability and alternatives.

  VoleonQuantitative ResearcherSoftware Engineering FundamentalsTechnical Screen
• Answer Spring Boot and Thymeleaf engineering questionsMedium

  This problem tests your understanding of Spring Boot MVC architecture, specifically how to manage session-scoped state, optimize view rendering, and implement robust server-side validation using Thymeleaf.

  Walmart LabsSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Compare Quicksort and Mergesort in PracticeMedium

  This problem tests your deep understanding of sorting algorithm internals beyond asymptotic complexity, focusing on practical trade-offs in memory, stability, and data characteristics.

  Walmart LabsSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Design and Implement an In-Memory Job Scheduler for Delayed JobsHard

  Design and implement an in-memory job scheduler that runs submitted jobs after a delay and supports cancellation and shutdown. It tests choosing a structure ordered by due time, thread-safe coordination without busy waiting, worker concurrency, failure isolation and the trade-offs of recurring or persistent jobs.

  Walmart LabsSoftware EngineerSoftware Engineering FundamentalsOnsite
• Implement a Shape interface using OOPMedium

  This problem tests your ability to design a robust object-oriented structure using interfaces and concrete class implementations, focusing on polymorphism and data encapsulation.

  Walmart LabsSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Design the Domain Model for an Automated Parking GarageMedium

  This problem tests object-oriented design skills by requiring the modeling of physical interactions (vehicles, spots, sensors) and transactional state management in an automated parking system.

  WayfairSoftware EngineerSoftware Engineering FundamentalsOnsite
• Build a Debounced Autocomplete Search BarMedium

  This problem evaluates your ability to implement a robust, performant search component that handles asynchronous race conditions and user accessibility requirements.

  WaymoFrontend EngineerSoftware Engineering FundamentalsOnsite
• Build a React naval boardMedium

  This question evaluates a candidate's ability to design frontend state and UI logic—specifically React component structure, state management, click-handling semantics, and derived sunk-detection logic for a Battleship-style board.

  WaymoFrontend EngineerSoftware Engineering FundamentalsTechnical Screen
• Build an Autocomplete Search Bar With a Hand-Written DebounceMedium

  Build an autocomplete search bar that fetches suggestions as the user types, with a hand-written debounce. Tests timer handling across renders, out-of-order responses and request cancellation, keyboard navigation, accessibility, cleanup and testing with fake timers.

  WaymoFrontend EngineerSoftware Engineering FundamentalsOnsite
• Debug an Angular UI from User ReportsMedium

  This problem tests your ability to debug an Angular component, specifically focusing on Change Detection strategies, memory leaks in RxJS subscriptions, and asynchronous state management.

  WaymoFrontend EngineerSoftware Engineering FundamentalsOnsite
• Deduplicate a 256 GB File on a Machine With 128 MB of MemoryMedium

  Remove duplicate records from a single 256 GB file on a machine with only 128 MB of memory. Tests external-memory techniques such as hash partitioning and external merge sort, skew handling, I/O cost, open-file limits, and preserving the original order.

  WaymoSoftware EngineerSoftware Engineering FundamentalsOnsite
• Design a Ride SchedulerMedium

  This problem tests your ability to design a robust scheduling system that handles dynamic task insertion, state transitions, and time-based prioritization using object-oriented principles.

  WaymoSoftware EngineerSoftware Engineering FundamentalsOnsite
• Design and Implement a Cross-System Object TrackerMedium

  This problem tests your ability to design an efficient data structure for maintaining and merging temporal events associated with multiple system-generated IDs for the same physical object.

  WaymoSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Drive a Car to an Unseen Destination Using Only Local Directions Without CirclingMedium

  A car must reach an unseen destination while only learning which directions are open at each step. Implement the search that finds it without driving in circles, testing depth-first exploration, visited tracking, physical backtracking, and cost in moves.

  WaymoSoftware EngineerSoftware Engineering FundamentalsOnsite