Software Engineering Fundamentals interview questions

Showing 1111–1140 of 1208 results

• Implement list, form, and API rendering with pitfallsMedium

  This question evaluates front-end web development competencies including local-state list rendering, form submission and validation behavior, client API integration with loading/success/error states, accessibility practices, idempotent update handling, and predictable re-rendering.

  TikTokSoftware EngineerSoftware Engineering FundamentalsOnline Assessment
• Investigate an iOS Memory FailureEasy

  Tests understanding of iOS memory management fundamentals, including differentiating Jetsam OOM events from fatal access exceptions, pinpointing retain cycles and memory growth, and using Xcode profiling tools to confirm fixes.

  TikTokSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Plan QA testing for a new featureEasy

  This problem tests your ability to structure a comprehensive quality assurance strategy for a social media feature, balancing functional testing, edge cases, and automation.

  TikTokSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Trace Source Code to an ExecutableEasy

  This question tests the candidate's understanding of the C/C++ compilation pipeline, focusing on how source code is transformed into a runnable binary and the role of different build artifacts.

  TikTokSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Code Review of a Multi-File HTTP API: Wrong Method, Payload and Validation BugsHard

  A code-review exercise on several files that implement an HTTP API, where the known defects include a GET endpoint that should be POST, a request payload problem and missing input validation. It tests explaining each defect by its impact, fixing it consistently across files, and running a prioritized review within an hour.

  ToastSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Diagnose CPU Performance Problems on a Linux ServerEasy

  Diagnose Linux CPU slowness from host and thread metrics through scheduling, limits, profiles, and a workload-linked verification of the bottleneck.

  Together AISoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Diagnose Slow Network Throughput Including ContainersEasy

  Investigate slow network throughput across application, transport, host, and container layers using controlled comparisons, retransmissions, limits, and path behavior.

  Together AISoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Diagnose Storage I/O Performance and Identify the WorkloadEasy

  Diagnose storage slowness using device metrics, process attribution, workload shape, cache and durability effects, and measurements appropriate to the storage stack.

  Together AISoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Investigate a Server Saturated by LoggingEasy

  Trace logging-related server saturation through resource attribution, producer/sink behavior, bounded queues, rotation and retention, and verified mitigation.

  Together AISoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Identify the CSS color functionEasy

  This question evaluates a candidate's understanding of CSS color functions, specifically knowledge of channel-based color specification and the use of an optional opacity component.

  TomaFrontend EngineerSoftware Engineering FundamentalsTechnical Screen
• Which CSS function supports opacity?Easy

  This question tests your knowledge of modern CSS color syntax and the various ways to define transparency within style rules.

  TomaFrontend EngineerSoftware Engineering FundamentalsTechnical Screen
• Debug a Frontend Component That Shows Wrong API ResultsMedium

  A front-end debugging question in which a React component that fetches data sometimes shows results that do not match the current input, even though each API response is correct. It tests how the candidate reproduces a timing-dependent bug, finds the root cause, fixes it in the effect, handles cancellation errors, and verifies the fix with a deterministic test.

  TradedeskFrontend EngineerSoftware Engineering FundamentalsOnsite
• Fetch and Cache Daily Stock Prices Across a Date RangeMedium

  This problem tests your ability to build a resilient data-fetching client that handles network unreliability, data integrity validation, and efficient caching patterns.

  TradedeskSoftware EngineerSoftware Engineering FundamentalsOnline Assessment
• Implement a Publish-Subscribe Event Bus in JavaScript or TypeScriptMedium

  A front-end coding question asking the candidate to implement an in-process publish-subscribe utility in JavaScript or TypeScript with subscribe, publish, and unsubscribe. It tests API design, choice of data structures, safe iteration when subscribers change during a publish, isolation of subscriber errors, and cleanup that avoids memory leaks.

  TradedeskFrontend EngineerSoftware Engineering FundamentalsOnsite
• Object-Oriented Design of an Elevator Control SystemMedium

  An object-oriented design question asking the candidate to model an elevator control system: its classes, their responsibilities, and how a button press becomes an elevator stop. It tests requirement scoping, a clear per-car state model, stop ordering and dispatch policies that can be swapped out, handling of out-of-service cars and duplicate requests, and testability.

  TradedeskFrontend EngineerSoftware Engineering FundamentalsOnsite
• C++ Fundamentals: const Pointers, and map vs unordered_mapMedium

  This question evaluates a candidate's grasp of C++ fundamentals, specifically const-correctness with pointers and the distinction between ordered and hash-based associative containers. It tests conceptual understanding of pointer semantics and data structure trade-offs (tree vs. hash table complexity and ordering), a common check in language-fundamentals interview rounds.

  TrexquantSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Make Cache Fetch Thread-Safe and Single-FlightMedium

  Design a thread-safe cache fetch operation that coalesces concurrent misses for the same key while allowing different keys to load in parallel. Define linearization points, generation-aware publication, lock scope, timeout and error handling, deletion races, and stale completion cleanup.

  TubiSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Design a Parking Garage Object ModelMedium

  This question evaluates object-oriented design, domain modeling, data structure selection, and concurrency control for resource allocation in a multi-level parking garage.

  UberSoftware EngineerSoftware Engineering FundamentalsOnsite
• Design a Parking LotMedium

  This problem tests object-oriented design principles and the ability to manage resource allocation and concurrency in a multi-threaded environment.

  UberSoftware EngineerSoftware Engineering FundamentalsOnsite
• Design a Rolling Event CounterMedium

  This question evaluates understanding of data structures and time-windowed counting, performance and memory trade-offs, expiration policies, and concurrency when implementing an in-memory rolling event counter.

  UberSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Design a meeting room reservation APIMedium

  This problem tests your ability to design an in-memory scheduling system that efficiently manages room availability and handles time-interval overlaps.

  UberSoftware EngineerSoftware Engineering FundamentalsOnsite
• Design an Iterative Path Tree and Clarify File Lookup SemanticsMedium

  Design an in-memory directory tree supporting iterative path insertion and file lookup using an explicit stack. The problem tests handling of duplicate component names, memory-efficient tree representation, and clarifying ambiguous file search contracts.

  UberSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Design an object-oriented parking lot systemMedium

  This question evaluates object-oriented design competency, including class modeling, responsibility assignment, relationships (inheritance and composition), and familiarity with design patterns and SOLID principles for representing constraints like spot sizes and vehicle types.

  UberSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Design follow/follower classesMedium

  This problem tests your ability to design a system for managing directed relationships between users, requiring careful selection of data structures to balance write performance and query latency.

  UberSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Design mkdir and ls for a Basic File SystemMedium

  Design an in-memory file system supporting path creation (`mkdir`) and directory listing (`ls`). Tests tree-based data structures, path parsing, and clean object-oriented design.

  UberSoftware EngineerSoftware Engineering FundamentalsOnsite
• Develop test plan and TDD for word searchMedium

  This question evaluates a candidate's competency in designing comprehensive test plans and test-driven development workflows for grid-based word search algorithms, covering edge-case identification, input normalization, path validity, and performance/stress considerations within software testing and algorithmic reasoning.

  UberSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Encode an N-ary tree as a string and decode it back to the identical treeMedium

  Design a string format for rooted N-ary trees and implement serialize and deserialize so the decoded tree has the same values, shape and child order. It tests unambiguous encoding of variable child counts, linear-time parsing, iterative handling of very deep trees, and validation of malformed input.

  UberSoftware EngineerSoftware Engineering FundamentalsOnsite
• Minimum Rooms, Merged Busy Blocks and Conflict Handling for Meeting IntervalsMedium

  A multi-part coding question built on the classic meeting-room scheduling problem: find the minimum number of rooms for a set of meetings, merge overlapping meetings into busy blocks, and detect and handle booking conflicts. It tests interval ordering, endpoint conventions, sweep reasoning and efficient lookups.

  UberSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Object-Oriented Parking Lot Design with Check-In and Check-OutHard

  An object-oriented design interview question asking you to model a parking lot and implement working check-in and check-out methods. It tests class design and relationships, fast free-spot lookup across vehicle sizes, ticket handling, fees, edge cases, and thread safety.

  UberSoftware EngineerSoftware Engineering FundamentalsOnsite
• Low-Level Design of an In-Memory File System with mkdir and lsMedium

  A low-level design interview question asking you to model a basic in-memory file system that supports mkdir and ls. It tests entity and class design for files and directories, representing the directory hierarchy and parent-child links, path resolution, and clear operation semantics.

  Uber FreightSoftware EngineerSoftware Engineering FundamentalsOnsite