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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 5371–5400 of 5874 results
- TikTokMediumSoftware EngineerSolve array and tree algorithm challenges
This question evaluates algorithmic problem-solving skills across array, heap, and tree data structures, testing competencies in duplicate handling, frequency aggregation, and balancing root-to-leaf path sums within the Coding & Algorithms domain.
Coding & AlgorithmsTechnical Screen - TikTokMediumSoftware EngineerSolve common string/DP/stack problems
This problem tests your ability to identify and implement an efficient solution for finding the longest substring that satisfies specific constraints, requiring a sliding window approach.
Coding & AlgorithmsTechnical ScreenSliding WindowHash MapStrings - TikTokHardSoftware EngineerSolve four OA algorithm problems
This problem tests your ability to optimize string manipulation using greedy approaches and Fenwick trees to count minimum adjacent swaps required to transform a string into a palindrome.
Coding & AlgorithmsTechnical ScreenGreedyStringsTwo Pointers - TikTokMediumSoftware EngineerSolve four algorithm design tasks
This multi-part question evaluates algorithm design and data-structure competencies including wildcard string pattern matching and trade-offs between dynamic programming and greedy strategies, dynamic pair-sum maintenance under frequent updates, O(1) LRU cache design, and scheduling/ordering for time-constrained threat neutralization.
Coding & AlgorithmsOnline Assessment - TikTokMediumSoftware EngineerSolve intervals and distinct islands
This question evaluates skills in interval manipulation and identification of distinct connected components in grids, testing competencies in data structure usage, algorithmic reasoning, and spatial pattern recognition within the Coding & Algorithms domain.
Coding & AlgorithmsOnsite - TikTokMediumSoftware EngineerSolve linked list, string filtering, and puzzle
This problem tests your ability to manipulate linked list pointers in-place, apply conditional string filtering with index tracking, and solve a greedy resource partitioning puzzle.
Coding & AlgorithmsTechnical ScreenLinked ListStringsGreedy - TikTokMediumSoftware EngineerSolve message splitting and board crushing
These problems evaluate string manipulation and numeric reasoning for variable-length metadata alongside grid simulation with pattern detection and gravity effects, testing skills such as careful edge-case handling, iterative state updates, and complexity analysis.
Coding & AlgorithmsTechnical Screen - TikTokMediumSoftware EngineerSolve three algorithm tasks
This multi-part question evaluates algorithmic problem-solving across string processing (text justification), handling ambiguous state in sequence validation (parentheses with wildcards), and grid graph traversal with path reconstruction, testing competencies in formatting and spacing logic, state-tracking for correctness under uncertainty, and shortest-path search and reconstruction. It is commonly asked in Coding & Algorithms interviews to assess correctness under edge cases, ability to reason about trade-offs and invariants, and the analysis of time and space complexity, requiring both conceptual understanding and practical implementation skills.
Coding & AlgorithmsTechnical Screen - TikTokHardSoftware EngineerSolve three string/stack/backtracking problems
This problem tests your ability to use a monotonic stack to determine visibility in a 2D line and backtracking to generate valid structural sequences.
Coding & AlgorithmsTechnical ScreenMonotonic StackBacktrackingRecursion - TikTokMediumSoftware EngineerSolve top-K and string rotation match
Solve top-K and string rotation match evaluates algorithm design, data structures, correctness, complexity, edge cases, and implementation details in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
Coding & AlgorithmsTechnical Screen - TikTokEasySoftware EngineerTrace Source Code to an Executable
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.
Software Engineering FundamentalsTechnical ScreenCompilationLinkingToolchain - TikTokMediumSoftware EngineerWalk through resume and resolve conflicts
Walk through resume and resolve conflicts evaluates behavioral evidence, ownership, communication, trade-offs, and measurable outcomes in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
Behavioral & LeadershipTechnical Screen - TikTokMediumSoftware EngineerWrite complex SQL for cohorts and retention
This question evaluates advanced SQL and data-engineering competencies such as cohort and retention analysis, deduplication, timezone normalization, last-touch attribution, aggregate revenue calculations, and effective use of window functions in the Data Manipulation (SQL/Python) domain.
Data Manipulation (SQL/Python)Technical Screen - TmlMediumSoftware EngineerImplement a Resizable Deque
This question evaluates proficiency in data structures and array-based implementations, specifically building a resizable double-ended queue (deque) backed by a circular array and understanding amortized O(1) operation costs.
Coding & AlgorithmsTechnical Screen - ToastHardSoftware EngineerCode Review of a Multi-File HTTP API: Wrong Method, Payload and Validation Bugs
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.
Software Engineering FundamentalsTechnical Screen - ToastHardSoftware EngineerDesign a Restaurant Seat and Table Reservation System
A system design question asking for a restaurant seat reservation system in which diners search availability by party size and time, then book, change or cancel. It tests the table-and-time inventory model, preventing double booking under concurrent requests, holds, availability caching and partitioning by restaurant.
System DesignTechnical Screen - Together AIHardSoftware EngineerDesign a GPU-aware pod scheduler
This interview question evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer for Design a GPU-aware pod scheduler states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
System DesignTechnical Screen - Together AIMediumSoftware EngineerDetect cycles and break them in pod dependencies
This question evaluates proficiency with directed graph concepts and dependency resolution, focusing on cycle detection and selecting a single dependency edge whose removal renders the graph acyclic.
Coding & AlgorithmsTechnical Screen - Together AIEasySoftware EngineerDiagnose CPU Performance Problems on a Linux Server
Diagnose Linux CPU slowness from host and thread metrics through scheduling, limits, profiles, and a workload-linked verification of the bottleneck.
Software Engineering FundamentalsTechnical Screen - Together AIEasySoftware EngineerDiagnose Slow Network Throughput Including Containers
Investigate slow network throughput across application, transport, host, and container layers using controlled comparisons, retransmissions, limits, and path behavior.
Software Engineering FundamentalsTechnical Screen - Together AIEasySoftware EngineerDiagnose Storage I/O Performance and Identify the Workload
Diagnose storage slowness using device metrics, process attribution, workload shape, cache and durability effects, and measurements appropriate to the storage stack.
Software Engineering FundamentalsTechnical Screen - Together AIMediumSoftware EngineerHistorical Lookups in a Timestamped Key-Value Store
Implement historical key-value lookups using timestamped writes, per-key ordered histories, and binary search for the latest eligible value.
Coding & AlgorithmsTechnical Screen - Together AIEasySoftware EngineerInvestigate a Server Saturated by Logging
Trace logging-related server saturation through resource attribution, producer/sink behavior, bounded queues, rotation and retention, and verified mitigation.
Software Engineering FundamentalsTechnical Screen - Together AIMediumSoftware EngineerSchedule GPU Pods and Drain a Node
Implement a GPU cluster manager to schedule workloads using a deterministic best-fit policy and simulate draining a node to check if all its pods can be migrated without disrupting other nodes.
Coding & AlgorithmsTechnical ScreenGreedySimulationSystem Design - Together AIEasySoftware EngineerSplit a Chunked Text Stream into Line-Balanced Parts
Construct any balanced whole-line partition of a chunked text stream, preserving exact content and newline rules while explaining buffering and streaming limits.
Coding & AlgorithmsTechnical Screen - TomaMediumSoftware EngineerImplement AudioStream Mixer
This problem tests your ability to manage temporal data and stateful buffers by implementing a class that merges multiple incoming audio streams into a single output track using overwrite-based mixing logic.
Coding & AlgorithmsTechnical ScreenHashMapsData StructuresSimulation - TradedeskMediumSoftware EngineerFetch and Cache Daily Stock Prices Across a Date Range
This problem tests your ability to build a resilient data-fetching client that handles network unreliability, data integrity validation, and efficient caching patterns.
Software Engineering FundamentalsOnline AssessmentAPICachingError Handling - TradedeskMediumSoftware EngineerProcess Operations in a Timestamped In-Memory Database
This problem tests your ability to design an in-memory data store with complex querying and expiration requirements using efficient nested data structures.
Coding & AlgorithmsOnline AssessmentHash MapSortingData Structures - TrexquantMediumSoftware EngineerC++ Fundamentals: const Pointers, and map vs unordered_map
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.
Software Engineering FundamentalsTechnical Screen - TrexquantMediumSoftware EngineerImplement Trie search with wildcard matching
This question evaluates understanding of trie data structures, string pattern matching with wildcard characters, and efficient algorithm design for large-scale add/search operations.
Coding & AlgorithmsOnsite
TikTok
Together AI
Tradedesk
Trexquant