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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 2491–2520 of 2810 results
- StubHubMediumSoftware EngineerDesign an Event Recommendation Engine
This question evaluates object-oriented design, system extensibility, interface and responsibility definition, and integration with external services in the context of a recommendation engine.
Software Engineering FundamentalsTechnical Screen - StubHubMediumSoftware EngineerExplain a resume project end-to-end
This question evaluates a candidate's ability to communicate technical ownership, end-to-end system thinking, measurable impact, and cross-functional leadership through description of problem context, architecture decisions, tooling, timelines, and outcomes.
Behavioral & LeadershipTechnical Screen - StubHubHardSoftware EngineerReview getEvents endpoint for readability, performance, scalability, security
A StubHub software-engineer technical-screen system-design exercise: review and fix a GET /events HTTP handler that loads related data (venue, performers, tickets, transactions) per event. Candidates must find and fix the N+1 query, then harden the endpoint across readability/architecture, performance (pagination, indexing, caching), scalability (timeouts, retries, rate limiting), and security (authN/authZ, injection, PII), with trade-offs, SLOs, and a test plan.
System DesignTechnical Screen - SupioEasySoftware EngineerCompute max planes shot and session count
These questions evaluate algorithmic problem-solving skills: the first focuses on greedy scheduling and time-step simulation to maximize actions before deadlines while the second tests event aggregation, sorting and grouping logic for sessionization.
Coding & AlgorithmsTechnical Screen - SupioEasySoftware EngineerDebug and extend a streaming chat app
This question evaluates debugging and implementation skills across frontend-backend interaction, including authentication/configuration, client-side state management, streamed response handling, request cancellation, and reasoning about API payload contracts.
Software Engineering FundamentalsTechnical Screen - TekionMediumSoftware EngineerCount Open Lockers After 100 Rounds
This problem tests mathematical reasoning and pattern recognition, specifically the relationship between integer divisors and toggling operations.
Statistics & MathTechnical ScreenMathematicsNumber TheoryPattern Recognition - TekionMediumSoftware EngineerFind an Optimal Strategy for an Even-Row Coin Game
Analyze optimal play in an even-row coin game, using position parity and game values to distinguish a guaranteed tie from a strict first-player win.
Statistics & MathTechnical Screen - TekionMediumSoftware EngineerFind the Maximum Number of Active Loans
This problem tests the ability to solve interval overlap challenges using the sweep-line algorithm, specifically handling boundary conditions where a loan ends at the exact time another begins.
Coding & AlgorithmsTechnical ScreenSweep-lineIntervalsSorting - TekionMediumSoftware EngineerMaximize Profit with at Most K Transactions
This problem tests dynamic programming optimization by finding the maximum profit from stock trading with a constraint on the total number of allowed transactions.
Coding & AlgorithmsTechnical ScreenDynamic ProgrammingAlgorithmsOptimization - TemporalMediumSoftware EngineerDesign a One-to-One Chat System
This problem tests your ability to design a distributed, low-latency, real-time messaging system, focusing on message delivery guarantees, state management, and scalability.
System DesignTechnical ScreenWebSocketsDistributed SystemsScalability - TemporalMediumSoftware EngineerImplement Concurrent Any-True Shot
This question tests the ability to manage concurrent asynchronous tasks, specifically implementing logic to return the first 'True' result while efficiently cancelling remaining pending tasks.
Coding & AlgorithmsTechnical ScreenConcurrencyAsyncCancellation - TemuMediumSoftware EngineerSpiral Order of a Matrix With Blocker Cells That Force Clockwise Turns
Traverse an m x n matrix clockwise from the outside in, then handle a follow-up where some cells are blockers that the walk must turn away from. Tests careful simulation of direction changes, tracking of visited cells, and a precise rule for when the traversal stops.
Coding & AlgorithmsTechnical Screen - TeslaMediumSoftware EngineerCalculate trapped water between elevation bars
This question evaluates array manipulation, algorithmic optimization, and complexity analysis, specifically the ability to reason about time and space trade-offs and design a linear-time, constant-space approach for computing trapped water.
Coding & AlgorithmsTechnical Screen - TeslaHardSoftware EngineerCoordinate workers across two exclusive targets
This problem tests your ability to manage concurrent resources using synchronization primitives, ensuring workers can safely alternate between two exclusive tasks while maintaining thread safety.
Coding & AlgorithmsTechnical ScreenConcurrencySynchronizationMultithreading - TeslaMediumSoftware EngineerDescribe how you use Kubernetes
Describe how you use Kubernetes evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
System DesignTechnical Screen - TeslaEasySoftware EngineerDesign a JSON Merge API with Pluggable Behaviors
Implement a non-mutating JSON merge utility with recursive object handling, configurable array merge strategies, and an extensible design for custom merge policies.
Software Engineering FundamentalsTechnical Screenjsonrecursionapi-design - TeslaHardSoftware EngineerDesign a Supercharger Backend: Billing, Stall Telemetry and Nearest Available Charger
System design question on the backend for an electric-vehicle fast-charging network: billing each session by the energy delivered, storing stall health telemetry long term, and showing drivers the nearest available charger with its price. Probes secure device communication, DNS and routing, local buffering and sync versus async choices.
System DesignTechnical Screen - TeslaMediumSoftware EngineerDesign a contiguous segment allocator
This question evaluates a candidate's competency in designing and implementing efficient data structures for interval management, contiguous memory allocation, fragmentation handling, tag-based resource tracking, and algorithmic complexity analysis.
Coding & AlgorithmsTechnical Screen - TeslaHardSoftware EngineerDesign concurrency-safe shared payment account API
Design concurrency-safe shared payment account API evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
System DesignTechnical Screen - TeslaMediumSoftware EngineerFind latency pairs with minimal difference
This question evaluates array manipulation, pairwise comparison, and algorithmic efficiency by requiring identification of minimal absolute differences and construction of ordered latency pairs.
Coding & AlgorithmsTechnical Screen - TeslaEasySoftware EngineerHandle API Errors with Python Requests
Tests your ability to write resilient HTTP client logic in Python using requests, distinguishing between retryable and non-retryable errors, handling rate limits, and safely parsing JSON.
Software Engineering FundamentalsTechnical Screenpythonnetworkingapi - TeslaHardSoftware EngineerImplement Reduce and Derive Map and Filter from It
Explain reduce semantics, derive ordered map and filter with a reducer, and compose them over table rows while handling empty input and accumulator costs.
Software Engineering FundamentalsTechnical Screen - TeslaHardSoftware EngineerImplement a Rollback Key-Value Store
This problem tests your ability to design a data structure that supports basic key-value operations with an added transactional rollback mechanism using a stack-based approach.
Coding & AlgorithmsTechnical ScreenData StructuresStackVersioning - TeslaMediumSoftware EngineerOptimize Trapping Rain Water
This question evaluates algorithmic problem-solving with arrays and analysis of time-space trade-offs in the Coding & Algorithms domain, and is commonly asked to assess a candidate's ability to transform brute-force approaches into efficient linear-time solutions while reasoning about memory usage.
Coding & AlgorithmsTechnical Screen - The Trade DeskEasySoftware EngineerAdd a click listener to a button
Add a click listener to a button 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.
Software Engineering FundamentalsTechnical Screen - TikTokMediumSoftware EngineerAnswer common behavioral questions using STAR
This question assesses the candidate's ability to communicate past professional experiences using the STAR method, focusing on accountability, problem-solving, and collaboration in a high-pressure environment.
Behavioral & LeadershipTechnical ScreenCommunicationSTAR MethodConflict Resolution - TikTokMediumSoftware EngineerAnswer core Python, CS, DB, and testing questions
This problem tests foundational software engineering knowledge across Python internals, database indexing, and testing strategy through a multi-part conceptual assessment.
Software Engineering FundamentalsTechnical ScreenPythonDatabasesSystems Design - TikTokMediumSoftware EngineerCompute length of longest increasing subsequence
This question evaluates understanding of subsequences, dynamic programming and algorithmic optimization for array processing, and is categorized under Coding & Algorithms; it emphasizes practical application of algorithm design and complexity analysis rather than purely theoretical knowledge.
Coding & AlgorithmsTechnical Screen - TikTokMediumSoftware EngineerCompute pipeline order from dependencies
This question evaluates understanding of graph algorithms and dependency resolution, specifically topological sorting and cycle detection, along with competence in choosing appropriate data structures and analyzing time/space complexity.
Coding & AlgorithmsTechnical Screen - TikTokMediumSoftware EngineerCount deletions making array fair
This question evaluates proficiency with array manipulation, parity-aware summation, and combinatorial counting when elements are removed, situating it in the Coding & Algorithms domain.
Coding & AlgorithmsTechnical Screen
StubHub
Temu
Tesla
The Trade Desk
TikTok