Amazon Software Engineer Interview Questions

Amazon Software Engineer interview questions typically assess both algorithmic craftsmanship and fit with Amazon’s culture. What’s distinctive is the dual emphasis: expect intense coding and problem-solving rounds (data structures, algorithms, complexity and correct edge-case handling), a system-design evaluation for more senior roles, and behavioral deep-dives tied to Amazon’s Leadership Principles. The interview loop often includes an online assessment or phone screen, followed by a multi-interviewer loop that features a Bar Raiser whose role is to ensure high hiring standards. Clear communication, tradeoff reasoning, and testable, clean code are repeatedly evaluated. For interview preparation, focus on three threads: timed coding practice on medium-to-hard problems with careful explanation of complexity and edge cases; concise STAR-format behavioral stories that map directly to Leadership Principles and show impact; and system-design sketches for senior levels that justify choices around scalability, availability, and cost. Run mock interviews to practice speaking clearly, articulate tradeoffs, and rehearse writing and testing code under time pressure. Recruiters will guide scheduling, but sustained, focused practice gives the best chance to demonstrate both technical depth and cultural fit.

362 Questions 1 Company08.11.2026
Showing 20 results
Role
Amazon logo
Amazon
Hard
Software Engineer

Design a fraud detection system

Design a Real-Time Payment Fraud Detection System Design an ML-powered system that scores each online card-not-present (CNP) payment during authorizat...

ML System Design
15
0
126 people solved
Aug 10, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design an e-commerce recommendation system

Design an Amazon-Scale E‑Commerce Product Recommendation System Context You are designing a large-scale recommendation system that powers multiple use...

ML System Design
14
0
139 people solved
Sep 6, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design a configuration subscription service

System Design: Configuration Service with Subscriptions Context Design a multi-tenant configuration service that stores key–value configuration and le...

System Design
9
0
70 people solved
Sep 6, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design real-time top-K products service

Question Design a real-time service that ingests a continuous stream of purchase events with the schema (customer_id, item_id, timestamp) and continuo...

System Design
9
0
108 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer AI

Calculate Circular Route Query Distance

You are given a circular route with n stops numbered 0 to n - 1. The array distances has length n, where distances[i] is the clockwise distance from s...

Coding & Algorithms
0
0
10 people solved
Apr 6, 2026
Amazon logo
Amazon
Medium
Software EngineerIntern Locked

Replace Delimited Tokens in a String

This question evaluates string parsing, token recognition, and dictionary lookup competencies for robust text replacement, including handling malforme...

Coding & Algorithms
2
0
15 people solved
May 28, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Schedule vector ops on heterogeneous cores

This question evaluates understanding of scheduling and load-balancing heuristics for heterogeneous processors, algorithmic complexity reasoning, and ...

Coding & Algorithms
8
0
75 people solved
Jan 2, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Design a multi-size storage locker system

This question evaluates a candidate's system-design skills, including distributed systems architecture, resource allocation/bin-packing reasoning for ...

System Design
7
0
78 people solved
Jan 2, 2026
Amazon logo
Amazon
Medium
Software Engineer

Solve three coding tasks: binary search, tree path, subarray

Solve three coding tasks: binary search, tree path, subarray Solve the following coding tasks: 1) In a sorted array, every value appears exactly twice...

Coding & Algorithms
7
0
55 people solved
Aug 10, 2025
Amazon logo
Amazon
Medium
Software Engineer

Describe projects and handle challenges

Describe projects and handle challenges Behavioral Interview Prompts — Software Engineer (Onsite) Context: In an onsite behavioral interview for a Sof...

Behavioral & Leadership
7
0
74 people solved
Aug 9, 2025
Amazon logo
Amazon
Medium
Software Engineer

Solve server updates and grid inconvenience minimization

1) You are given an integer array server of length n, where server[i] is the number of requests the i-th server can process. Over multiple days, you r...

Coding & Algorithms
5
0
78 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Maximize Value Under a Budget

This question evaluates combinatorial optimization and algorithm design skills for resource-constrained selection problems, focusing on concepts exemp...

Coding & Algorithms
1
0
12 people solved
May 22, 2026
Amazon logo
Amazon
Medium
Software EngineerIntern Locked

Count Connected Components in an Undirected Graph

This question evaluates understanding of graph connectivity and cycle detection, measuring competency in reasoning about connected components and the ...

Coding & Algorithms
1
0
16 people solved
May 19, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Build a responsive grid of fixed boxes

This question evaluates front-end layout and responsiveness skills including HTML/CSS and React component rendering, plus performance scaling for larg...

Software Engineering Fundamentals
5
0
67 people solved
Jan 22, 2026
Amazon logo
Amazon
Hard
Software Engineer Locked

Explain Aurora-style internals: WAL, MVCC, replication, recovery

This question evaluates knowledge of database storage engine and distributed database internals, covering write-ahead logging, MVCC, replication model...

Software Engineering Fundamentals
6
0
54 people solved
Jan 22, 2026
Amazon logo
Amazon
Hard
Software Engineer

Design an online bookstore for browse and purchase

Design an online bookstore for browse and purchase System Design: Online Bookstore (Browse + Purchase) Context Design an online bookstore that allows ...

System Design
3
0
54 people solved
Jul 31, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design secure multi-tier cloud infrastructure

System Design: Multi-tier VPC Architecture for a Large-Scale Application You are designing and deploying a production-ready, multi-tier network on AWS...

System Design
6
0
71 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer

Optimize with a cache/hash map

Question This is a follow-up to your existing implementation (for example, a script that repeatedly resolves file paths or parses license strings into...

Coding & Algorithms
4
0
84 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design an OOD restaurant management system

Object-oriented design: Restaurant management system Design an object-oriented system for a dine-in restaurant that supports the following: Functional...

Software Engineering Fundamentals
9
0
94 people solved
Sep 5, 2025
Amazon logo
Amazon
Hard
Software Engineer

Minimize Branch Merge Conflicts

You are given several feature branches that must all be merged into the main branch. Each branch contains a sequence of commits, and each commit modif...

Coding & Algorithms
11
0
179 people solved
Jan 12, 2026
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Frequently Asked Questions

How difficult are Amazon Software Engineer interview questions?
The difficulty of Amazon Software Engineer interview questions varies by level and team but is generally rigorous. For entry-level SDE roles expect medium-to-hard algorithm and data-structure problems under time pressure, while more senior roles include complex system-design and architecture discussions that probe tradeoffs and scalability. Interviewers evaluate not just correct solutions but clarity of thought, communication, and how you justify design choices; behavioral evaluation against Amazon’s Leadership Principles also influences outcomes. Preparation that improves problem selection, complexity analysis, and spoken explanation will materially raise your chances of success.
What is the typical interview process for an Amazon Software Engineer, and where do coding, design, and behavioral questions appear?
Amazon’s Software Engineer hiring loop commonly begins with a recruiter screen, may include an online coding assessment, followed by one or more technical phone screens and an onsite (or virtual) interview loop of multiple interviews. Coding questions typically appear in the online assessment and technical phone/on-site algorithm rounds, design questions appear in object-oriented design or system-design interviews (more for senior levels), and behavioral questions tied to Amazon’s Leadership Principles are asked in nearly every loop, often including a Bar Raiser who evaluates long-term fit. Timing and format can vary by team.
How much time should I plan for interview preparation for Amazon Software Engineer roles?
Preparation time depends on your baseline skills and the role level, but a focused plan typically spans four to eight weeks for most candidates. Beginners should allocate time to master fundamentals in data structures, algorithms, and Big-O analysis while practicing timed coding problems and mock interviews; mid-level candidates should add system-design and architecture practice; senior candidates need deeper design, distributed systems, and leadership-story preparation. Regular timed practice, review of common patterns, and rehearsing STAR-format behavioral examples will improve performance more than ad-hoc study. Use the recruiter’s guidance to tailor your timeline.
What key subtopics should I focus on for Amazon Software Engineer interview questions?
Focus on core computer-science fundamentals first: arrays, strings, linked lists, trees, graphs, heaps, hash tables, and common algorithms for searching, sorting, traversals, and dynamic programming, with comfortable Big-O reasoning. For mid-to-senior roles add object-oriented design, system design, databases, networking basics, and distributed-systems tradeoffs including caching, consistency, and scalability. Don’t neglect coding hygiene, testing, and clear communication. Behavioral preparation should map examples to Amazon’s Leadership Principles, demonstrating ownership, bias for action, and customer obsession. Prioritize depth in areas most relevant to the role you applied for.
What are standout tips and common pitfalls when preparing for Amazon Software Engineer interviews?
Standout tips include clearly communicating your approach before coding, writing correct and readable code with edge-case checks, iterating from a simple solution to optimizations, and tying behavioral stories to concrete outcomes aligned with Amazon’s Leadership Principles. Use mock interviews to practice pacing and explanation. Common pitfalls are diving into code without outlining the plan, ignoring complexity tradeoffs, failing to test examples or handle edge cases, and giving vague behavioral answers. Be honest about unknowns and show how you would learn or validate assumptions; recruiters value candid problem-solving processes.

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