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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
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- 11
- Topics
- 8
- Languages
Showing 391–420 of 5874 results
- AmazonHardSoftware EngineerExplain Aurora-style internals: WAL, MVCC, replication, recovery
This question tests your conceptual understanding of how log-structured storage engines, like Amazon Aurora, decouple the database log from the data pages to achieve low-latency replication and fast recovery.
Software Engineering FundamentalsTechnical ScreenDistributed SystemsDatabase InternalsStorage Engines - AmazonMediumSoftware EngineerExplain Customer-Focused Technical Work and AI Verification
This question assesses a candidate's ability to balance rapid AI adoption with rigorous engineering standards, focusing on ownership and customer impact.
Behavioral & LeadershipTechnical ScreenBehavioralAISystem Design - AmazonMediumSoftware EngineerExplain Decoder-Only LLM Architecture and How vLLM Serves It Efficiently
A two-part conversational question for AI infrastructure roles: explain how a decoder-only transformer turns a prompt into next-token probabilities, then explain how vLLM serves such models efficiently. It tests transformer internals, KV cache sizing, prefill versus decode bottlenecks, paged KV memory and continuous batching.
Machine LearningOnsite - AmazonMediumSoftware EngineerExplain What You Want in Your Next Role
Explain next-role motivation by connecting personal goals and evidence-backed strengths to verified team needs, while acknowledging open questions and tradeoffs.
Behavioral & LeadershipOnsite - AmazonMediumSoftware EngineerExplain Why You Are Considering a Job Change
This question assesses your ability to articulate a professional narrative that balances growth aspirations with current career satisfaction, ensuring that the motivation for leaving is proactive rather than reactive.
Behavioral & LeadershipOnsiteBehavioralCareer GrowthCommunication - AmazonMediumSoftware EngineerExplain Your Interest in an Organization and Role
Explain your interest in an organization and engineering role using specific reasons, relevant project experience, and a realistic contribution.
Behavioral & LeadershipTechnical Screen - AmazonMediumSoftware EngineerExplain a GenAI Use Case and Learn from a Failure
Tests your ability to critically analyze a production Generative AI architecture, dissect a technical failure or performance degradation, and demonstrate rigorous root-cause analysis alongside validated engineering remediations.
Software Engineering FundamentalsOnsiteGenerative AISystem DesignRCA - AmazonMediumSoftware EngineerExplain a Project That Could Not Meet a Tight Deadline
Explain a missed or renegotiated deadline with early risk signals, personal accountability, explicit scope trade-offs, and a concrete planning improvement.
Behavioral & LeadershipTechnical Screen - AmazonMediumSoftware EngineerExplain an AI-Agent Project and Its Adoption
Tests your ability to communicate end-to-end technical leadership for an AI agent system, covering technical architecture, stakeholder collaboration, and concrete user-adoption metrics.
Behavioral & LeadershipTechnical ScreenBehavioralAI AgentsSystem Design - AmazonMediumSoftware EngineerExplain conflict, ownership, and AI use
An Amazon-style behavioral interview prep set for early-career software engineers, spanning multiple conflict-resolution stories, deep root-cause investigation, ownership beyond your formal role, and responsible use of generative AI. It teaches a STAR-plus-reflection framework, what each prompt is really evaluating, and how to stay consistent under heavy follow-up questioning.
Behavioral & LeadershipOnline Assessment - AmazonMediumSoftware EngineerExplain deadlines, going beyond, and persuasion
Explain deadlines, going beyond, and persuasion 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 - AmazonMediumSoftware EngineerExplain how you use AI tools to learn and code, and defend a past AI project
A hiring-manager discussion for an entry-level software engineer about working with AI tools. It asks how the candidate uses AI to learn and to code, then probes a past AI project: whether AI was truly needed, how its output is verified, and how it would scale in a very large organization.
Behavioral & LeadershipOnsite - AmazonMediumSoftware EngineerExplain overfitting, regularization, and LLM techniques
This question tests the conceptual understanding of model generalization trade-offs, the mathematical mechanics of regularization, and the practical application of modern LLM architectures.
Machine LearningTechnical ScreenRegularizationLLMRAG - AmazonHardSoftware EngineerExplain the Most Complex Problem You Solved
This question tests your ability to structure a high-stakes technical narrative using the STAR (Situation, Task, Action, Result) method while demonstrating depth of engineering judgment.
Behavioral & LeadershipHR ScreenBehavioralLeadershipSystem Design - AmazonMediumSoftware EngineerExplain work-simulation approach under ambiguity
This question evaluates a software engineer's ability to prioritize tasks, manage multiple stakeholders' requests, document assumptions and decisions, and deliver incremental value within a time-boxed, ambiguous assignment.
Behavioral & LeadershipTechnical Screen - AmazonHardSoftware EngineerFewest Severity Inversions When Interleaving Two Patch Queues
Merge two severity-labeled patch queues into one install order that keeps each queue's internal order, and return the minimum number of severity inversions over every valid merge. Tests DP over two sequences and efficient counting with letters as priorities.
Coding & AlgorithmsOnline Assessmentdynamic-programmingstringsinversions - AmazonHardSoftware EngineerFind Longest Activatable Server Streak
This problem tests your ability to use the sliding window technique to find the longest contiguous subarray that satisfies a specific count-based constraint.
Coding & AlgorithmsOnline AssessmentSliding WindowTwo PointersArray - AmazonHardSoftware EngineerFind Two-Word Compound Words
This problem tests string manipulation, hash set lookups, and the ability to efficiently identify compound words formed by the concatenation of exactly two distinct words from a provided collection.
Coding & AlgorithmsTechnical ScreenStringsHash SetAlgorithms - AmazonHardSoftware EngineerFind a Maximum-Sum Window in a Sparse Array
This problem tests the ability to optimize sliding window calculations for extremely large arrays by leveraging compressed data structures (run-length encoding) rather than materializing the full array.
Coding & AlgorithmsOnline AssessmentSliding WindowArraysOptimization - AmazonHardSoftware EngineerFind a Valid Course Order
This problem tests your ability to detect cycles in a directed graph and perform a topological sort to resolve dependencies.
Coding & AlgorithmsOnsiteGraphsTopological SortKahn's Algorithm - AmazonMediumSoftware EngineerFind a valid dependency order
This question evaluates understanding of directed graphs, dependency resolution and cycle detection, and the ability to reason about valid ordering constraints within a graph representation.
Coding & AlgorithmsOnline Assessment - AmazonEasySoftware EngineerFind all cells reachable by downhill flow
This question evaluates graph traversal and reachability reasoning on a 2D elevation grid, testing algorithmic problem-solving, complexity analysis, and handling of monotonic flow constraints.
Coding & AlgorithmsTechnical Screen - AmazonMediumSoftware EngineerFind concatenated words in list
This question evaluates proficiency in string manipulation, efficient lookup structures (e.g., hashing/trie) and dynamic programming or recursion for word segmentation, testing algorithmic efficiency and data-structure selection within the Coding & Algorithms domain.
Coding & AlgorithmsTechnical Screen - AmazonMediumSoftware EngineerFind first unique character
Find first unique character 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 - AmazonMediumSoftware EngineerFind longest common contiguous subarray
This question evaluates a candidate's proficiency in array and substring algorithm design, including concepts such as dynamic programming, hashing, and efficient search techniques.
Coding & AlgorithmsOnsite - AmazonMediumSoftware EngineerFind longest segment with dominant ends
This question evaluates algorithmic problem-solving with arrays and complexity-aware design, testing skills in efficient subarray identification, boundary reasoning, and performance analysis within the Coding & Algorithms domain.
Coding & AlgorithmsOnline Assessment - AmazonMediumSoftware EngineerFind longest segment with endpoints > interior
This question evaluates algorithmic design and array-processing skills, specifically reasoning about subarray endpoint vs interior relationships, range comparisons, and designing solutions with subquadratic time and space complexity.
Coding & AlgorithmsOnline Assessment - AmazonMediumSoftware EngineerFind max equal-frequency block count for each prefix
This problem tests your ability to efficiently manage character frequency tracking while processing string prefixes, using hash maps or frequency arrays to validate partitioning conditions.
Coding & AlgorithmsTechnical ScreenStringsDynamic ProgrammingHash Map - AmazonMediumSoftware EngineerFind minimum days to deliver all orders
This question evaluates algorithm design and combinatorial optimization skills, focusing on scheduling and load-balancing under per-center capacity constraints and frequency-based counting.
Coding & AlgorithmsOnline Assessment - AmazonMediumSoftware EngineerFind minimum time for irrecoverable password
This question evaluates string-processing skills, combinatorial counting of substrings, simulation of time-based state changes, and algorithmic complexity analysis.
Coding & AlgorithmsOnline Assessment
Amazon