Software Engineering Fundamentals interview questions

Showing 931–960 of 1208 results

• Extend an Expense Rules Engine with Nested Boolean ConditionsHard

  Extend an expense rules engine with validated AND/OR/NOT expression trees, typed leaf operators, explicit missing-field semantics, and explainable evaluation.

  RipplingSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Extensible Logger With Independent Handlers and Any-Keyword Search Over Stored LogsEasy

  An object-oriented design and coding question about a logger with independent handlers that strip a configured string, truncate, uppercase or store messages, followed by a case-sensitive any-keyword search over stored logs. It tests extensible design patterns, indexing for fast search, and scaling a logger to production volume.

  RipplingSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Implement A Prioritized Task Scheduler With Parent DependenciesMedium

  Implement a task scheduler that manages parent-child task dependencies, applies custom multi-field tie-breaking priority rules, supports filtering, and handles dependency cycles.

  RipplingSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Implement a RESTful Q&A serviceMedium

  This question evaluates a candidate's ability to design and implement a RESTful web service, covering HTTP API design, CRUD operations, data modeling and persistence choices, input validation, pagination/sorting, and basic testing and documentation practices.

  RipplingSoftware EngineerSoftware Engineering FundamentalsOnsite
• Implement a minimal local HTTP serverHard

  This question evaluates proficiency in network programming, HTTP/1.1 protocol parsing, concurrent server design, request routing and security (including path traversal protection), observability, testing, and graceful shutdown using only the language standard library.

  RipplingSoftware EngineerSoftware Engineering FundamentalsOnsite
• Plan CI Build Job Order with Prerequisites, Urgency and FiltersMedium

  Order CI build jobs so that prerequisites come first, more urgent jobs go earlier, filtered-out jobs are skipped without breaking ordering through them, and jobs can be grouped into parallel waves. Tests Kahn's algorithm, deterministic tie-breaking, cycle reporting, and turning a detailed spec into code.

  RipplingSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Process a Task List: Deduplicate, Drop Completed, Sort by Priority, and Nest SubtasksMedium

  Senior backend coding question: process a batch of scheduler tasks by removing duplicates on description and due date, dropping completed tasks, sorting by priority, and placing each subtask directly after its parent. It tests clarifying ambiguous policies, orphan and cycle handling, O(n log n) design, and verified use of an AI coding assistant.

  RipplingBackend EngineerSoftware Engineering FundamentalsOnsite
• Propagate Task Filtering Through AncestorsHard

  Design an algorithm to filter a hierarchy of tasks where any task failing a predicate—or having any ancestor that fails or is missing—is excluded along with all its descendants, running in linear time and preserving original order.

  RipplingSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Rank five-card hands by type, then find best and worst completions of unknown cardsMedium

  A two-part coding question on a poker-like card game: compare two five-card hands by a fixed type priority with ties broken card by card, then find the best and worst complete hands when the last cards are unknown. Tests hand classification, ordering keys, testing discipline and search over completions.

  RipplingSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Stagehand Wage Ledger With Accrued and Settled PayMedium

  Design an in-memory class that tracks hourly pay for theater stagehands across logged call times, keeps running cost totals, and settles wages up to a cutoff without ever paying the same minute twice.

  RipplingSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Task Scheduler with Dependencies, Priorities and FiltersMedium

  Coding question that asks for a task scheduler built from a detailed specification: tasks must come after their dependencies, follow priority or importance rules, and pass configurable filters. It tests topological ordering, deterministic tie-breaking, cycle handling and turning many interacting requirements into correct, tested code.

  RipplingSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Tutor Billing Ledger With Idempotent Invoice CutoffsMedium

  Implement an in-memory ledger for hourly tutors that logs sessions, reports total and outstanding amounts in O(1), and invoices work up to a cutoff without ever billing the same minute twice. Tests stateful design, exact arithmetic, and handling of partial and late-logged work.

  RipplingSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Build a Chainable Rectangle Manipulation APIMedium

  This problem tests your ability to design a fluent interface (method chaining) that manages an internal queue of asynchronous operations to ensure tasks execute sequentially.

  RobinhoodFrontend EngineerSoftware Engineering FundamentalsTechnical Screen
• Clarify Friendship Rules and Money-Transfer Semantics Before Choosing an AlgorithmMedium

  Clarify friendship and money-transfer requirements, separate graph reachability from accounting, and reason about a conditional implementation and invariants.

  RobinhoodSoftware EngineerSoftware Engineering FundamentalsOnsite
• Define and Calculate Employee Referral CountsMedium

  Implement an algorithm to compute direct and total downstream referral counts for every employee in a directed graph that may contain duplicates, converging paths, and cycles.

  RobinhoodSoftware EngineerSoftware Engineering FundamentalsOnsite
• Design an iOS Timer App with Consistent State and Asynchronous UI UpdatesEasy

  Design an iOS timer around explicit state transitions, clock-based elapsed time, main-thread UI updates, callback ownership, and lifecycle behavior.

  RobinhoodSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Explain auth, key rotation, secrets, and incident responseMedium

  This question tests your knowledge of secure microservice communication, the lifecycle management of sensitive credentials, and the operational procedures for mitigating security breaches.

  RobinhoodSoftware EngineerSoftware Engineering FundamentalsOnsite
• Give a Project Deep Dive Grounded in Personal OwnershipMedium

  Tests your ability to present a deep dive into an impactful software project you led or contributed heavily to, emphasizing architectural trade-offs, personal ownership, failure modes, and measurable outcomes.

  RobinhoodSoftware EngineerSoftware Engineering FundamentalsOnsite
• Give a Technical Deep Dive into a Software ProjectMedium

  Practice a project deep dive covering architecture, personal ownership, implementation decisions, validation, outcomes, and lessons learned.

  RobinhoodSoftware EngineerSoftware Engineering FundamentalsOnsite
• Jetpack Compose Auto-Scrolling List with a Start/Stop Toggle and Hex Color SwitchingMedium

  Tests Jetpack Compose UI state management, coroutine lifecycle side-effects with LazyListState, and defensive hex color string parsing.

  RobinhoodAndroid EngineerSoftware Engineering FundamentalsTechnical Screen
• Reason About Dependency Loading with Topological SortMedium

  Tests graph construction, topological sorting (Kahn's algorithm or DFS), cycle detection, and deterministic tie-breaking for modular dependency resolution.

  RobinhoodSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Write SQL to analyze CA residency historyHard

  This question evaluates a candidate's ability to write SQL for temporal state reconstruction, including correct joins on composite keys, interpreting edit/audit logs, and reasoning about inclusive/exclusive timestamps.

  RobinhoodData EngineerSoftware Engineering FundamentalsTechnical Screen
• Build a Configurable Two-Player Tic-Tac-Toe Board in ReactHard

  Tests your ability to architect a scalable, accessible React component with dynamic state, efficient win-detection logic for large grid sizes, and robust handling of prop updates.

  RobloxFrontend EngineerSoftware Engineering FundamentalsTechnical Screen
• Build an Auto-Rotating Traffic Light in Vanilla JavaScript Without a FrameworkMedium

  A frontend coding question asking for a traffic light that cycles through its colors automatically, built with plain HTML, CSS, and JavaScript and no framework. It tests state machine design, timer management and cleanup, efficient DOM updates, accessibility, and how to test time-based UI code.

  RobloxSoftware EngineerSoftware Engineering FundamentalsOnsite
• Implement a Rolling-Window Rate LimiterMedium

  Implement an in-memory, rolling-window rate limiter supporting per-client limits, precise boundary expiration, and stale state cleanup.

  RobloxSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Select Maximum Call Stacks Across ThreadsMedium

  Design an in-memory profiler aggregator to track sampled call stacks across threads, returning the most frequent stacks globally and per-thread with deterministic tie-breaking.

  RobloxSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Explain concurrency and distributed fundamentalsMedium

  This question tests fundamental knowledge of thread-safe collections in Java and core distributed systems architectural patterns, specifically partitioning strategies.

  RokuBackend EngineerSoftware Engineering FundamentalsOnsite
• Design a Minesweeper Bot That Decides Which Cell to Flag or Reveal NextMedium

  Design a bot that plays Minesweeper and maximizes its chance of winning. The question tests how the bot turns revealed numbers into constraints, finds cells that are certainly mines or certainly safe, estimates the risk of every hidden cell when it must guess, and keeps each move fast and measurable over many games.

  RunloopSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Design a Cash Register with Inventory and Profit TrackingEasy

  Design an object-oriented cash register that manages multi-lot product inventory using FIFO accounting, executes atomic multi-item sales, and accurately tracks realized gross profit.

  SIG (Susquehanna)Software EngineerSoftware Engineering FundamentalsOnsite
• Find and Fix C++ Ownership Bugs: Double Free, Shallow Copy, and Object SlicingMedium

  Tests a candidate's ability to identify and fix critical C++ resource management bugs, specifically shallow copies leading to double-free errors and object slicing caused by improper pass-by-value semantics with polymorphic types.

  SIG (Susquehanna)Software EngineerSoftware Engineering FundamentalsOnsite