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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.
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Showing 2101–2130 of 2336 results
- StripeMediumSoftware EngineerGenerate a ride map image via POST API
Implement a payload builder for an external static map generation API that processes raw ride GPS telemetry, downsamples points, generates bounding viewports, and formats marker overlays.
Software Engineering FundamentalsOnsitegeospatialapi-designalgorithms - StripeMediumSoftware EngineerImplement Billing Coding Exercises
Implement a subscription proration and billing reconciliation engine that generates line items across plan changes and computes the outstanding balance against posted payments.
Coding & AlgorithmsOnsitealgorithmsbillingreconciliation - StripeHardSoftware EngineerImplement Validation and String Compression
This problem tests your ability to design a custom parser and recursive string processor that handles nested patterns while enforcing strict input validation.
Coding & AlgorithmsOnsiteStringsStackRecursion - StripeMediumSoftware EngineerImplement a multi-step form in React
This question evaluates a candidate's competence in React front-end development, including component state management, multi-step form validation, UI state control during asynchronous submissions, and error handling.
Software Engineering FundamentalsOnsite - StripeHardSoftware EngineerImproving a Product After Shipping Its MVP: Deciding What to Iterate On
Behavioral question about a time you shipped a minimum viable product at work and then had to keep improving it. Tests how you scope an MVP, use post-launch signals to prioritize iterations, manage deliberate shortcuts and technical debt, and measure outcomes against goals.
Behavioral & LeadershipOnsite - StripeMediumSoftware EngineerMatch Payments to Invoices by Memo ID, Exact Amount, then Amount Tolerance
A multi-part coding exercise that matches a payment to an invoice: first by an invoice ID found in the payment memo, then by exact amount with the earliest due date breaking ties, then within an amount tolerance. It tests parsing, deterministic tie-breaking, rule precedence, and keeping earlier test cases passing as requirements grow.
Software Engineering FundamentalsOnsite - StripeMediumSoftware EngineerPrepare for Backend Parsing, API Integration, AI Coding, and Bug Fixing Rounds
Tests parsing structured text payloads, managing transactional state machines, and implementing strict idempotency semantics with robust error handling.
Software Engineering FundamentalsOnsiteParsingState MachineIdempotency - StripeMediumSoftware EngineerRender a GeoJSON Bike Ride with Markers and Alternating Paths via a Map API
An API integration exercise that reads a bike ride from a GeoJSON file, posts JSON map parameters to a static map rendering service, and saves the PNG it returns. The final part adds start and end markers and draws the route in alternating colors every ten segments, testing HTTP client usage, coordinate order and off-by-one grouping.
Software Engineering FundamentalsOnsite - StripeMediumSoftware EngineerRender a Sailing Voyage from GeoJSON with a Map Snapshot API
Parse a GPS voyage from a GeoJSON file, POST it to a map snapshot service, save the returned PNG, then add start and finish markers and color bands of fixed segment counts. Tests careful JSON navigation, coordinate order, binary HTTP handling, and off-by-one-free chunking.
Software Engineering FundamentalsOnsitehttpjsongeojson - StripeMediumSoftware EngineerShow Senior Engineering Leadership Through a Past Project
Explain senior engineering leadership through real project scope, technical judgment, coordination, delegation, and supported outcomes.
Behavioral & LeadershipOnsite - StripeMediumSoftware EngineerWeekly Maintenance Windows Across Time Zones: Find Usable Slots
Combine recurring 'open' maintenance windows and 'blackout' periods, declared in different local time zones, into the next usable UTC slots after a notice period; tests interval merging, subtraction and week wrap-around.
Coding & AlgorithmsOnsiteintervalssortingtime-zones - StubHubMediumSoftware EngineerBuild Event Notification Engine
This question evaluates a candidate's competency in modular software design and extensibility, algorithmic filtering and ranking, date arithmetic for birthday proximity, geospatial distance computation, and integration with notification services.
Coding & AlgorithmsOnsite - StubHubMediumSoftware EngineerDesign Composable Event Recommendations
This problem tests your ability to design a flexible, object-oriented recommendation engine that allows for composable filtering and ranking logic using the strategy or decorator pattern.
Coding & AlgorithmsOnsiteSystem DesignAlgorithmsOOP - StubHubMediumSoftware EngineerDesign Event Email System
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 Event Email System states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
System DesignOnsite - StubHubMediumSoftware EngineerDesign Internal Chat and Re-engagement Emails
This question evaluates a candidate's competency in designing scalable, real-time messaging systems and re-engagement workflows, covering distributed systems concepts such as WebSocket-based bidirectional communication, presence, cross-server message routing, message persistence, APIs, storage trade-offs, inactivity detection, and email-triggering workflows. Commonly asked in the System Design category, it tests high-level architectural reasoning and practical application of scalability, reliability, and failure-handling trade-offs when integrating persistent WebSocket connections, cross-server routing, and background email jobs in a distributed platform.
System DesignOnsite - StubHubMediumSoftware EngineerDesign a Global Marketing Email Platform
This problem tests your ability to design a high-throughput, fault-tolerant email delivery system that handles scheduling across time zones, manages email templates, and provides basic analytics.
System DesignOnsiteScalabilityDistributed SystemsMessaging - StubHubMediumSoftware EngineerImplement a Composable Event Recommendation Engine
This problem tests your ability to design a flexible, object-oriented recommendation pipeline using the Strategy and Composite patterns to handle multiple scoring rules and fallback logic.
Coding & AlgorithmsOnsiteOOPStrategy PatternRecommendation Systems - SumologicMediumSoftware EngineerSolve substring and access-log problems
This problem tests your ability to process log data and perform string manipulation by identifying users who visited a specific URL across multiple days and determining the longest common substring between two modified strings.
Coding & AlgorithmsOnsiteStringsHashingDynamic Programming - SunriseEasySoftware EngineerExplain the least squares method
Explain the least squares method evaluates core ML concepts, assumptions, math intuition, training/evaluation trade-offs, and practical failure modes in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
Machine LearningOnsite - TemuEasySoftware EngineerFind missing rank in a straight
This question evaluates a candidate's ability to map and manipulate encoded card ranks, reason about consecutive sequences with Ace-as-low or Ace-as-high semantics, and identify a missing element within a constrained set.
Coding & AlgorithmsOnsite - TemuEasySoftware EngineerFind next greater element for subset
This question evaluates understanding of sequence analysis and array-processing competencies, including mapping elements between arrays, index lookup, and designing efficient order-dependent algorithms for the "next greater element" problem.
Coding & AlgorithmsOnsite - TeslaMediumSoftware EngineerCoordinate Counter Updates Across Threads
Tests multi-threaded synchronization, atomic operations, barrier synchronization, and coordinated condition handling across concurrent threads.
Software Engineering FundamentalsOnsiteconcurrencymultithreadingsynchronization - TeslaEasySoftware EngineerCount the Ways to Decode a Numeric Cipher
This problem tests your ability to solve a counting problem using dynamic programming by identifying overlapping subproblems in a sequence of numeric mappings.
Coding & AlgorithmsOnsiteDynamic ProgrammingString ManipulationAlgorithms - TeslaHardSoftware EngineerDesign a Distributed Blob Storage System for Build Artifacts
Design a distributed storage system for build artifacts, similar to a distributed NoSQL database but storing opaque blobs with looser ACID requirements. It tests separating immutable data from consistent metadata, upload atomicity, replication and repair, handling download fan-out, and safe retention and garbage collection.
System DesignOnsite - TeslaMediumSoftware EngineerDesign a Video Sharing Platform
Design a resilient, large-scale video sharing and streaming platform that handles multi-gigabyte uploads, asynchronous transcoding, and low-latency global delivery. This question tests your ability to design chunked upload protocols, idempotent processing pipelines, and CDN-backed adaptive streaming architectures.
System DesignOnsiteDistributed SystemsVideo StreamingCDN - TeslaMediumSoftware EngineerDesign an Order Fulfillment System
Design an order-fulfillment system and explain its major components, data flow, and reliability trade-offs.
System DesignOnsite - TeslaHardSoftware EngineerFlatten a Linked List with Nested Side Branches into One Doubly Linked List
A linked list whose nodes may each carry one side branch, with branches nested like a binary tree, must be flattened into a single doubly linked list with every branch spliced between its parent and the parent's original successor. It tests pointer rewiring, ordering rules for nested branches, and handling very deep nesting.
Coding & AlgorithmsOnsite - TeslaHardSoftware EngineerFrom a Monorepo Commit to an Over-the-Air Vehicle Update, and Choosing What to Build
Trace everything that happens between an engineer pushing a commit to a monorepo and the resulting software being installed on customers' cars, then explain how the monorepo decides which targets to build and test and in what order. It tests CI and release gating, artifact provenance, staged over-the-air rollout, safe in-vehicle installation, and dependency-graph builds.
System DesignOnsite - TeslaMediumSoftware EngineerHow to Identify Best Battery Group
This question evaluates understanding of statistical inference, experimental design, and metric construction for binary test outcomes, including defining composite quality measures, handling unequal sample sizes, quantifying uncertainty, and addressing multiple-comparison issues.
Machine LearningOnsite - TeslaMediumSoftware EngineerReason About Alternating Positive and Negative Values
This problem tests your ability to manipulate array elements in-place while managing constraints on stability and the treatment of special values like zeros.
Software Engineering FundamentalsOnsiteArraysTwo-PointersIn-place
Stripe
StubHub
Temu
Tesla