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Amazon Software Developer Interview Questions and Answers
383 Interview questions
Design a data structure for O(1) create/delete and random number generation using a hash map and an array.
Use a hash map to store elements with their indices for O(1) access.
Maintain an array to store the actual elements for O(1) random access.
On insertion, add the element to the array and update the hash map.
On deletion, swap the element with the last element in the array, remove it, and update the hash map.
To ge...
MySQL is an open-source relational database management system used for storing and managing data.
MySQL uses Structured Query Language (SQL) for database operations.
It supports various data types, including INT, VARCHAR, and DATE.
MySQL is widely used in web applications, such as WordPress and Joomla.
It allows for data manipulation through commands like SELECT, INSERT, UPDATE, and DELETE.
MySQL can handle large datab...
Java is a versatile, object-oriented programming language used for building platform-independent applications.
Developed by Sun Microsystems in 1995.
Java runs on the Java Virtual Machine (JVM), enabling cross-platform compatibility.
It supports Object-Oriented Programming (OOP) principles like inheritance, encapsulation, and polymorphism.
Java is widely used for web applications, mobile applications (Android), and en...
PHP is a popular server-side scripting language designed for web development, enabling dynamic content creation and database interaction.
PHP stands for 'Hypertext Preprocessor'.
It is widely used for building web applications, such as WordPress and Facebook.
PHP code is embedded within HTML, allowing for seamless integration.
It supports various databases, including MySQL, PostgreSQL, and SQLite.
PHP is open-source an...
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CSS (Cascading Style Sheets) is a stylesheet language used to describe the presentation of a document written in HTML or XML.
CSS controls layout, colors, fonts, and overall visual appearance of web pages.
It allows for responsive design, enabling websites to adapt to different screen sizes (e.g., using media queries).
CSS can be applied inline, embedded in the head of an HTML document, or linked as an external style...
URL stands for Uniform Resource Locator, a reference to a web resource that specifies its location on a computer network.
A URL is used to access web pages, such as 'https://www.example.com'.
It consists of several components: protocol (http), domain (example.com), and path (/page).
URLs can also include query parameters, like 'https://www.example.com/search?q=keyword'.
They are essential for web navigation and linkin...
HTML (HyperText Markup Language) is the standard language for creating web pages and web applications.
HTML uses tags to structure content, e.g., <h1> for headings, <p> for paragraphs.
It allows embedding multimedia elements like images (<img>) and videos (<video>).
HTML forms (<form>) enable user input, such as text fields and buttons.
HTML documents are structured with a doctype declara...
Dynamic Programming (DP) approach to solve problems by deciding to pick or not pick an item based on constraints.
DP is used to optimize problems with overlapping subproblems and optimal substructure.
Common examples include the Knapsack problem, where you decide to include or exclude items based on weight and value.
The decision to pick or not pick can be represented using a binary choice at each step.
Memoization or...
Check if two strings are equal after processing backspaces represented by '#'.
Use two pointers to traverse both strings from the end to the beginning.
Skip characters when encountering a '#', which represents a backspace.
Compare characters from both strings after processing backspaces.
Example: s = 'ab#c', t = 'ad#c' -> both result in 'ac', so return true.
Example: s = 'a##c', t = '#a#c' -> both result in 'c', ...
Designing a cart feature for an e-commerce site involves user experience, data management, and integration with payment systems.
User Interface: Simple and intuitive design for adding/removing items.
Data Storage: Use a database to store cart items, e.g., MongoDB or MySQL.
Session Management: Store cart data in user sessions or cookies for persistence.
Real-time Updates: Use WebSockets or AJAX for real-time cart updat...
Amazon Software Developer Interview Experiences
197 interviews found
Anonymous
I appeared for an interview in Feb 2025.
(2 Questions)
- Q1. Self introduction
- Q2. Hi , good morning this is kamakshi from someswaram Dr br Ambedkar konaseema district Andhra
Coding questions about our technical skills
(1 Question)
- Q1. About our skills
(1 Question)
- Q1. According to the skills to move hr
I applied via Company Website and was interviewed in Nov 2024. There was 1 interview round.
(5 Questions)
- Q1. Why Amazon Software Developer?
- Ans.
Amazon offers challenging projects, innovative technologies, and a collaborative work environment.
Opportunity to work on cutting-edge projects like Amazon Web Services (AWS) or Alexa
Access to vast resources and tools for development
Collaborative work culture that encourages learning and growth
Opportunity to impact millions of customers worldwide
Competitive compensation and benefits package
- Q2. Why do you want to work at amazon ?
- Ans.
I want to work at Amazon because of their innovative culture, vast resources, and opportunities for growth.
Amazon is known for its innovative culture and cutting-edge technology.
They have vast resources and a global reach, providing opportunities to work on impactful projects.
Amazon offers great career growth and development opportunities for software developers.
I admire Amazon's customer-centric approach and focus on ...
- Q3. What are your strengths and weakness?
- Ans.
My strengths include problem-solving skills and attention to detail. My weakness is sometimes being too critical of my own work.
Strengths: problem-solving skills
Strengths: attention to detail
Weakness: being too critical of my own work
- Q4. How would you solve?
- Ans.
I would solve the problem by breaking it down into smaller tasks, analyzing requirements, designing a solution, coding, testing, and debugging.
Analyze requirements thoroughly before starting the development process
Break down the problem into smaller tasks to make it more manageable
Design a solution architecture that meets the requirements and is scalable
Code the solution using best practices and coding standards
Test th...
- Q5. What are the short term and long-term for teame or organisation?
- Ans.
Short term goals focus on immediate tasks and objectives, while long-term goals involve strategic planning and growth.
Short term goals may include completing a specific project, improving team communication, or implementing a new software feature.
Long-term goals could involve expanding the team, increasing market share, or developing new products or services.
Short term goals help keep the team focused and motivated, wh...
Interview Preparation Tips
- Excel
- Data Entry
- Project Management
- Ms World
- Programming
- Google software developer
- Microsoft software developer
1. Understand Amazon's culture:?
2. Review job description ?
3.update your resume.? B
INTERVIEW PREPARATION
1.Research the team and role ?
2. Prepare to talk about your experience?
3.How would you solve?
4.What are your strengths and weakness?
I applied via Company Website and was interviewed in Jun 2024. There were 6 interview rounds.
It was a coding test on Hackerrank with 3 Leetcode easy to medium-level questions.
(1 Question)
- Q1. Phone Interview Round - LP-based discussion followed by an easy DSA question.
(1 Question)
- Q1. Loop Round 1 (Hiring Manager Round) - LP-based discussion followed by a system design question (HLD) which was basically around what the hiring team is working on.
(1 Question)
- Q1. Loop Round 2 (Coding Round) - LP-based discussion followed by a Leetcode medium coding question.
(1 Question)
- Q1. Loop Round 3 (Coding Round) - LP-based discussion followed by an OOD question which was fairly simple but the requirements were not clarified very well even on asking multiple times. Ask and clarify to the...
(1 Question)
- Q1. Loop Round 4 (Coding Round) (Bar Raiser) - LP-based discussion followed by a Leetcode medium coding question.
Interview Preparation Tips
- Data Structures
- Algorithms
- System Design
- Object Oriented Design
- Amazon Leadership Principles
Stay confident.
For System Design and OOD, always clarify the requirements since it's very open-ended and subjective. And do keep an eye on the clock.
I applied via Campus Placement and was interviewed in Nov 2024. There were 3 interview rounds.
Good but tough i dint do well but still qualified
Very tough only graphs dp and linked lists were asked
(2 Questions)
- Q1. Reverse a linked list
- Q2. Dfs of a graph
- Ans.
Depth-first search (DFS) is a graph traversal algorithm that explores as far as possible along each branch before backtracking.
DFS starts at a selected node and explores as far as possible along each branch before backtracking.
It uses a stack to keep track of nodes to visit next.
DFS can be implemented recursively or iteratively.
Example: DFS traversal of a graph starting from node A: A -> B -> D -> E -> C -&...
Interview Preparation Tips
Skills evaluated in this interview
(2 Questions)
- Q1. Least Common Ancestor of binary tree
- Q2. Smallest path to reach from a to b point in matrix
- Ans.
Use Dijkstra's algorithm to find the smallest path from point a to point b in a matrix.
Implement Dijkstra's algorithm to find the shortest path in a matrix
Create a matrix representation of the graph with weights on edges
Start from point a and explore all possible paths to reach point b
Hacker rank test include 2 code and mcg questions
(2 Questions)
- Q1. Coding based on linked list
- Ans.
Linked lists are dynamic data structures that consist of nodes, each containing data and a reference to the next node.
A linked list consists of nodes, where each node has data and a pointer to the next node.
Types of linked lists include singly linked lists, doubly linked lists, and circular linked lists.
Example of a singly linked list: Node1 -> Node2 -> Node3 -> NULL.
Doubly linked list allows traversal in both...
- Q2. String related coding questions
Two coding questions, both passed 100%
(1 Question)
- Q1. What is the problem of identifying duplicates in an array?
- Ans.
Identifying duplicates in an array involves finding and removing elements that appear more than once.
Iterate through the array and use a hash set to keep track of elements seen so far.
If an element is already in the hash set, it is a duplicate and can be removed.
Example: ['apple', 'banana', 'apple', 'orange'] - 'apple' is a duplicate.
Example: ['cat', 'dog', 'bird', 'cat'] - 'cat' is a duplicate.
2-3 coding questions with some mcq
(2 Questions)
- Q1. Live coding with the hr
- Q2. Binary Trees based traversal
I appeared for an interview in Apr 2025, where I was asked the following questions.
- Q1. It was a DFS based graph question [Leetcode easy]
- Q2. Could you describe the process for designing a data structure that allows for all create and delete operations in O(1) time while also implementing a function that generates a random number?
- Ans.
Design a data structure for O(1) create/delete and random number generation using a hash map and an array.
Use a hash map to store elements with their indices for O(1) access.
Maintain an array to store the actual elements for O(1) random access.
On insertion, add the element to the array and update the hash map.
On deletion, swap the element with the last element in the array, remove it, and update the hash map.
To get a r...
I appeared for an interview in May 2025, where I was asked the following questions.
- Q1. Java Sql Inheritance
- Q2. Java Polymorphism
Amazon Interview FAQs
Some of the top questions asked at the Amazon Software Developer interview -
The duration of Amazon Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.
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