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Amazon
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I appeared for an interview before Feb 2024.
I applied via Walk-in and was interviewed in Aug 2022. There were 2 interview rounds.
I applied via Naukri.com
What people are saying about Amazon
I applied via Company Website and was interviewed in Jun 2024. There were 2 interview rounds.
Emails to the host and guests.
I have the necessary skills, experience, and passion for the role.
I have relevant experience in the industry
I possess the required skills and qualifications
I am passionate about the work and eager to contribute
I have a track record of success in similar roles
Seeking new challenges and growth opportunities in a different environment.
Desire for new challenges and learning experiences
Opportunity for career advancement
Seeking a better work-life balance
Interest in exploring different industries or sectors
I applied via Naukri.com and was interviewed in Dec 2022. There were 3 interview rounds.
I have over 8 years of experience in financial analysis, project management, and team leadership.
Managed a team of analysts to successfully implement cost-saving initiatives
Led cross-functional projects resulting in increased efficiency and profitability
Performed in-depth financial analysis to support strategic decision-making
Collaborated with senior management to develop and execute business plans
My product handling experience has been excellent, with a focus on efficiency and accuracy.
Implemented efficient product handling processes to streamline operations
Ensured accurate inventory management and tracking
Trained team members on proper product handling techniques
Utilized technology to improve product handling efficiency, such as barcode scanning systems
The customer feedback on my work was overwhelmingly positive, highlighting my attention to detail and excellent communication skills.
Received positive feedback on attention to detail
Received positive feedback on communication skills
Customers expressed satisfaction with the overall experience
Indexes in MySQL are used to improve query performance by allowing faster data retrieval.
Indexes are created on one or more columns of a table.
They work by creating a separate data structure that allows for faster data retrieval.
Indexes can be created using the CREATE INDEX statement.
Indexes can also be dropped using the DROP INDEX statement.
Indexes can be used to speed up SELECT, UPDATE, and DELETE statements.
Indexes ...
include_once and require_once are PHP functions used to include files. The difference is in how they handle errors.
include_once will only include the file once, and will not throw a fatal error if the file is not found
require_once will also only include the file once, but will throw a fatal error if the file is not found
Both functions are used to include files that contain functions or variables that are needed in the
Sessions and cookies are both used for maintaining user state, but sessions are server-side and cookies are client-side.
Sessions store user data on the server, while cookies store data on the client's browser
Sessions are more secure than cookies because the data is not accessible to the client
Cookies can be used for tracking user behavior and preferences
Sessions are typically used for authentication and authorization p...
To find missing number in an array of first n numbers.
Calculate the sum of first n numbers using formula n*(n+1)/2
Calculate the sum of given array using loop
Subtract the sum of array from sum of first n numbers to get the missing number
Design a database schema for a chat application with individual and group messaging.
Create a 'users' table with unique user IDs
Create a 'messages' table with message IDs, sender and receiver IDs, message content, and timestamp
Create a 'groups' table with unique group IDs and group names
Create a 'group_members' table with group ID and user ID to track group membership
Use foreign keys to link tables together
Consider inde
SQL query to retrieve all unread messages upon user sign in
Use a JOIN statement to combine the messages and user tables
Filter the results to only show messages that have not been read by the user
Use the user's sign in information to identify which messages are unread
I am excited to join OLX because of its innovative approach to online marketplaces and its commitment to customer satisfaction.
I am impressed by OLX's user-friendly platform and its ability to connect buyers and sellers from all over the world.
I am excited to work with a team of talented developers who are passionate about creating cutting-edge technology.
I believe that OLX's focus on customer satisfaction aligns with ...
I have faced difficulties in debugging complex code and managing project timelines.
Debugging complex code with multiple dependencies
Managing project timelines with changing requirements
Working with legacy code and outdated technologies
Collaborating with team members in different time zones
Dealing with unexpected bugs and errors
I report to the Technical Lead and am part of the development team.
I report to the Technical Lead
I am part of the development team
Our website receives an average of 10,000 unique visitors per day.
Our website has a steady flow of traffic with a consistent number of unique visitors per day.
We use Google Analytics to track our web traffic and analyze user behavior.
Our peak traffic times are during weekdays from 9am to 5pm.
We have noticed an increase in mobile traffic over the past year.
Our website's traffic is primarily driven by organic search and
I appeared for an interview before Dec 2020.
Round duration - 60 Minutes
Round difficulty - Medium
This was a Data Structures and Algorithms round with preety good questions . I was expected to come up with an efficient approach and code it as well .
Your house is located at the origin (0,0) of a 2-D plane. There are N
neighbors living at different points on the plane. Your goal is to visit exactly K
neighb...
Find the K closest points to the origin in a 2-D plane using Euclidean Distance.
Calculate the Euclidean Distance of each point from the origin
Sort the points based on their distances
Return the first K points as the closest neighbors
Given a sorted array of 'N' integers, your task is to generate the power set for this array. Each subset of this power set should be individually sorted.
A power set of a set 'ARR' i...
Generate the power set of a sorted array of integers with individually sorted subsets.
Use recursion to generate all possible subsets by including or excluding each element in the array.
Sort each subset before adding it to the power set.
Handle base cases for empty array and single element array.
Ensure the subsets are unique by using a set data structure.
Time complexity can be exponential due to the nature of generating
Round duration - 50 Minutes
Round difficulty - Hard
This was also a DSA round where I was asked to code only one of the questions but I eventually ended up coding both as I had some spare time and explained my approches very smoothly to the interviewer . This round went preety well .
Convert a string representing a Roman numeral into its integer equivalent and return the result.
Roman numerals are represented by seven different symbol...
Convert a Roman numeral string to its integer equivalent.
Create a mapping of Roman numeral symbols to their integer values.
Iterate through the input string and add the corresponding integer values.
Handle cases where subtraction is needed (e.g., IV = 4, IX = 9).
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.
Find pairs of elements in an array that sum up to a given value, sorted in a specific order.
Iterate through the array and for each element, check if the complement (S - current element) exists in a hash set.
If the complement exists, add the pair to the result list.
Sort the result list based on the criteria mentioned in the question.
Return the sorted list of pairs.
Round duration - 50 Minutes
Round difficulty - Medium
This was also a DSA round with 2 questions . One was implementation heavy and the other was related to recursion and so I handled it carefully so that my code does not run into TLE or Segmentation Fault.
You are provided with a string expression
consisting of characters '+', '-', '*', '/', '(', ')' and digits '0' to '9', representing an arithmetic express...
Evaluate arithmetic expressions in infix notation with given operators and precedence rules.
Parse the infix expression to postfix using a stack.
Evaluate the postfix expression using a stack.
Handle operator precedence and parentheses while evaluating.
Ensure no division by zero cases and operands fit in 32-bit integer.
You are given a sorted integer array ARR
of size N
. Your task is to remove the duplicates in such a way that each element appears only once. The outpu...
Remove duplicates from a sorted array in-place with O(1) extra memory.
Use two pointers - one for iterating through the array and another for placing unique elements.
Compare current element with next element to identify duplicates and skip them.
Update array in-place by moving unique elements to the front.
Return the length of the array after removal of duplicates.
Round duration - 50 Minutes
Round difficulty - Medium
This was a typical System Design round where I was asked about the various features of Facebook and what sort of data structures and algorithms are used in implementing them .
Facebook stores likes and dislikes using a combination of databases and algorithms.
Likes and dislikes are stored in databases such as MySQL or Cassandra.
Algorithms are used to analyze user behavior and recommend content based on likes and dislikes.
User interactions with posts, pages, and ads are tracked to determine likes and dislikes.
Likes and dislikes may also be used to personalize the user's feed and target ads mor
Facebook implements graph search using a graph database to efficiently search for connections between users and their interests.
Facebook uses a graph database to store connections between users, pages, groups, etc.
The graph search algorithm traverses the graph to find relevant connections based on user queries.
It takes into account factors like user relationships, interests, and interactions to provide personalized sea
Round duration - 50 Minutes
Round difficulty - Medium
This was a preety intense round as I was grilled more on my System Design concepts but eventually I was able to asnwers all the questions with some help from the interviewer.
Hadoop is a framework for distributed storage and processing of large data sets.
Hadoop is used for storing and processing big data across a distributed network of computers.
It is based on the MapReduce programming model, which allows for parallel processing of data.
Hadoop consists of HDFS for storage and YARN for resource management.
It is used for tasks like data warehousing, log processing, recommendation systems, and...
Facebook Chat works by using a combination of websockets, long polling, and push technology to deliver real-time messaging.
Facebook Chat uses websockets for real-time communication between the client and server.
Long polling is used to check for new messages when websockets are not supported.
Push technology is used to notify users of new messages even when the chat window is not open.
Messages are stored in a database an...
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
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