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Amazon Front end Developer Interview Questions and Answers

Updated 18 Nov 2024

Amazon Front end Developer Interview Experiences

3 interviews found

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Coding a frontend UI from provided image. And creating a fucntional star rating system

Round 2 - Technical 

(2 Questions)

  • Q1. Designing a Component API in React using Typescript.
  • Ans. 

    Designing a Component API in React using Typescript involves defining props, state, and methods for the component.

    • Define the props interface to specify the expected input data for the component

    • Use typescript types to ensure type safety and prevent runtime errors

    • Define the state interface to manage the internal state of the component

    • Implement methods to handle user interactions and component logic

    • Document the component

  • Answered by AI
  • Q2. Create a function that can clear all the timer ids at once.
  • Ans. 

    Function to clear all timer ids at once

    • Create an array to store all timer ids

    • Iterate through the array and clear each timer id using clearTimeout() function

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Given a matrix zeros and ones find minimum distance for each one to a zero.
  • Ans. 

    Given a matrix of zeros and ones, find the minimum distance for each one to a zero.

    • Use breadth-first search (BFS) to find the minimum distance from each one to a zero.

    • Start by initializing a queue with all the zeros in the matrix.

    • While the queue is not empty, dequeue a zero and enqueue its neighboring ones.

    • Keep track of the distance from each one to the nearest zero.

    • Repeat until all ones have been visited.

    • Return the ma

  • Answered by AI

Skills evaluated in this interview

Front end Developer Interview Questions Asked at Other Companies

Q1. Non-Decreasing Array Problem Statement Given an integer array ARR ... read more
Q2. Find Unique Element in Array You have been provided an integer ar ... read more
asked in JUSPAY
Q3. Dijkstra's Shortest Path Problem Statement You are given an undir ... read more
asked in JUSPAY
Q4. Encode N-ary Tree to Binary Tree Problem Statement You are provid ... read more
Q5. Sort Linked List Based on Actual Values You are given a Singly Li ... read more
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed before Aug 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

30mins aptitude test

Round 2 - Coding Test 

90 mins coding test for 3 questions

Round 3 - HR 

(2 Questions)

  • Q1. Why are you choosing this role
  • Ans. 

    I am choosing this role because of my passion for creating user-friendly and visually appealing websites.

    • Passion for front end development

    • Enjoy creating user-friendly interfaces

    • Excited about the creative aspect of web design

  • Answered by AI
  • Q2. Why should we write you
  • Ans. 

    I am a dedicated and skilled front end developer with a passion for creating user-friendly interfaces.

    • I have a strong understanding of HTML, CSS, and JavaScript

    • I have experience with responsive design and cross-browser compatibility

    • I am proficient in using front end frameworks like React and Angular

  • Answered by AI

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Feb 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. About JS in general
  • Q2. Basic JS concepts

Interview Preparation Tips

Interview preparation tips for other job seekers - Get your JS fundamentals clear
Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in May 2024. There was 1 interview round.

Round 1 - Coding Test 

There was an online coding test on signal consisting of leetcode easy medium and hard

Interview Preparation Tips

Round: Test
Experience: The written test did NOT involve general aptitude questions. Most questions were CS specific and pertained to some kind of algorithmic analysis, design of recursive solutions, designing and tracing out an algorithm on a given sample etc. About 50-60% of the candidates were eliminated in this round.

Round: Test
Experience: The next round was a coding assignment. For those familiar with code-chef, the coding assignment was similar to a medium level problem (in the practice section) and had to be done in C. The codingassignment by design, required algorithmic optimization to execute within the prescribed time limit. About 10 candidates (8 UG and 2 PG) were selected for interviews. Yahoo generally conducts 4 technical interviews and an HR interview. Typically, 2 of the 4 tech interviews will be with immediate seniors in teams that are interested in your profile. The remaining two will be with more senior engineers (in fact, one of my interviews was with the tech director of a vertical at Yahoo). Interviewers discuss with each other after each interview, and some candidates were eliminated after one poor interview. It is therefore quite important to do

General Tips: Apart from technical skills, your communication and social skills are what can make or break an interview and eventually, decide whether or not you get the job. Objectively speaking, most candidates who make it to the final round will be very technically proficient. Therefore, your aim should be to make the decision regarding your candidature anything BUT objective. The real advantage of an interview is to let the interviewer know YOU, beyond just your written test score or your academic credentials. Interviewers like confidence in a candidate and it can even make you seem better than you really are. It will also help to have a few well thought out questions in mind for your interviewer, to show him that you have put in more effort than other candidates to find out about the kind of work going on at the company. One thing youcan do is to find out who all the interviewers are during the pre-placement talk (Yes, attending the PPT CAN BE USEFUL). General Tips Preparation Look up their LinkedIn profiles and note what projects they have worked on or guided. Asking a few insightful questions about those specific projects is a good way to create a good impression of you. It is very difficult to truly judge a candidate during a 45 minute interview, so what matters a lot is the impression left in the interviewers mind about you. If possible, try to establish a social connect during your limited interaction with the interviewers, BEFORE the interviews take place. For example, one of my interviewers, a senior tech manager at Yahoo, was an NITK alumnus. Before the interviews, I spoke to him about his experience in college. As it turns out, he was one of the founders of the web club at NITK, of which I am a member. We spoke for about 15 minutes about how the club has grown and how the club has helped its members ever since.
Skill Tips: For a computer science student who intends to take up a technical job at a tier 1 company, spend as much time as possible, honing your technical skills. Start well before placement season, if possible, in 3rd year itself
College Name: NIT SURATHKAL

I appeared for an interview before Mar 2021.

Round 1 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

In first round they asked me 2 coding questions where he asked me to code as close as possible to the actual one.

  • Q1. 

    Ninja and Sorted Array Merging Problem

    Ninja is tasked with merging two given sorted integer arrays ARR1 and ARR2 of sizes 'M' and 'N', respectively, such that the merged result is a single sorted array w...

  • Ans. 

    Merge two sorted arrays into one sorted array in place.

    • Use two pointers to compare elements from both arrays and place them in the correct position in ARR1.

    • Start from the end of ARR1 and compare elements from both arrays, placing the larger element at the end of ARR1.

    • Continue this process until all elements from ARR2 are merged into ARR1.

  • Answered by AI
  • Q2. 

    Word Distance Calculation

    Given a document represented as an array/list ARR of words with length N, find the smallest distance between two given words for multiple queries. The distance is defined as the ...

  • Ans. 

    Find the smallest distance between two words in a document for multiple queries.

    • Iterate through the document array to find the indices of the two words in each query.

    • Calculate the absolute difference between the indices to get the distance.

    • If a word from the query is not present in the document, return the length of the document array.

    • Repeat the process for each query and output the smallest distance for each.

  • Answered by AI
Round 2 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Then in the second round they asked a little about tree and told me to code 2 codes.

  • Q1. 

    Level Order Traversal Problem Statement

    Given a binary tree of integers, return the level order traversal of the binary tree.

    Input:

    The first line contains an integer 'T', representing the number of te...
  • Ans. 

    The problem requires implementing a function to return the level order traversal of a binary tree.

    • Implement a function that takes the root of the binary tree as input and returns the level order traversal of the tree.

    • Use a queue data structure to perform level order traversal.

    • Process each level of the tree one by one, starting from the root node.

    • Print the node values at each level in the order they appear from left to ...

  • Answered by AI
  • Q2. 

    Combination Sum Problem Statement

    Given an array of distinct positive integers ARR and a non-negative integer 'B', find all unique combinations in the array where the sum is equal to 'B'. Numbers can be c...

  • Ans. 

    Find all unique combinations in an array where the sum is equal to a given target sum, with elements in non-decreasing order.

    • Use backtracking to generate all possible combinations.

    • Sort the array to ensure elements are in non-decreasing order.

    • Track the current combination and sum while backtracking.

    • Terminate recursion when the sum equals the target sum.

    • Avoid duplicates by skipping elements that have been used in previou

  • Answered by AI
Round 3 - HR 

Round duration - 30 minutes
Round difficulty - Easy

HR round with typical behavioral problems.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPALinkedIn interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 5 monthsInterview preparation tips for other job seekers

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.

Application resume tips for other job seekers

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.

Final outcome of the interviewSelected

Skills evaluated in this interview

I appeared for an interview before Mar 2021.

Round 1 - Coding Test 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Medium

This was a online test round where I was given 3 DSA questions to be solved in 60 minutes.

  • Q1. 

    Count Ways to Reach the N-th Stair Problem Statement

    You are provided with a number of stairs, and initially, you are located at the 0th stair. You need to reach the Nth stair, and you can climb one or tw...

  • Ans. 

    The problem involves finding the number of distinct ways to climb to the Nth stair by taking one or two steps at a time.

    • Use dynamic programming to solve the problem efficiently.

    • The number of ways to reach the Nth stair is the sum of the number of ways to reach the (N-1)th stair and the (N-2)th stair.

    • Handle base cases for N=0 and N=1 separately.

    • Consider using modulo 10^9+7 to avoid overflow in calculations.

  • Answered by AI
  • Q2. 

    Optimal Strategy for a Coin Game

    You are playing a coin game with your friend Ninjax. There are N coins placed in a straight line.

    Here are the rules of the game:

    1. Each coin has a value associated wit...
  • Ans. 

    The problem involves finding the optimal strategy to accumulate the maximum amount in a coin game with specific rules.

    • Start by understanding the rules of the game and how players take turns to choose coins.

    • Consider the scenario where both players play optimally to maximize winnings.

    • Iterate through different strategies to determine the best approach for selecting coins.

    • Keep track of the total winnings accumulated by eac...

  • Answered by AI
  • Q3. 

    Generate All Parentheses Combinations

    Given an integer N, your task is to create all possible valid parentheses configurations that are well-formed using N pairs. A sequence of parentheses is considered w...

  • Ans. 

    Generate all possible valid parentheses configurations using N pairs.

    • Use backtracking to generate all possible combinations of parentheses.

    • Keep track of the number of open and close parentheses used.

    • Add '(' if there are remaining open parentheses, and add ')' if there are remaining close parentheses.

    • Base case: when the length of the generated string is 2*N, add it to the result array.

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPALinkedIn interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 4 monthsInterview preparation tips for other job seekers

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.

Application resume tips for other job seekers

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.

Final outcome of the interviewRejected

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview in May 2024.

Round 1 - Aptitude Test 

It was having english and maths questions

Round 2 - Coding Test 

Code was easy kindly do pratice

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

I haven't appeared but this website asking me everytime that's why giving review but I wanted to know what are the ratings for this company

Round 3 - Technical 

(2 Questions)

  • Q1. I haven't appeared but ratings it
  • Q2. Why you choose uplers

Interview Preparation Tips

Interview preparation tips for other job seekers - Know the procedure before going to assessment, learn all the things before assessment

Amazon Interview FAQs

How many rounds are there in Amazon Front end Developer interview?
Amazon interview process usually has 2 rounds. The most common rounds in the Amazon interview process are Technical, Coding Test and Aptitude Test.
What are the top questions asked in Amazon Front end Developer interview?

Some of the top questions asked at the Amazon Front end Developer interview -

  1. Create a function that can clear all the timer ids at on...read more
  2. Given a matrix zeros and ones find minimum distance for each one to a ze...read more
  3. Designing a Component API in React using Typescri...read more

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Amazon Front end Developer Interview Process

based on 6 interviews

Interview experience

4.7
  
Excellent
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Amazon Front end Developer Salary
based on 45 salaries
₹3.8 L/yr - ₹9 L/yr
49% more than the average Front end Developer Salary in India
View more details

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based on 10 reviews

3.6/5

Rating in categories

4.0

Skill development

3.3

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3.5

Salary

3.7

Job security

3.8

Company culture

3.3

Promotions

3.9

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