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Amazon ml engineer Interview Questions and Answers

Updated 7 Oct 2024

Amazon ml engineer Interview Experiences

1 interview found

ml engineer Interview Questions & Answers

user image Anonymous

posted on 7 Oct 2024

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via campus placement at International Institute of Information Technology (IIIT), Allahabad and was interviewed before Oct 2023. There was 1 interview round.

Round 1 - Aptitude Test 

Two questions asked which have difficulty level is high

Interview Preparation Tips

Interview preparation tips for other job seekers - Work on DSA leetcode medium to hard question

ml engineer Jobs at Amazon

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Interview questions from similar companies

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Oct 2024. There were 3 interview rounds.

Round 1 - Coding Test 

Test contains 26 questions for me 13 are java based 13 are c++ based

Round 2 - Technical 

(2 Questions)

  • Q1. Indexing in dbms
  • Ans. 

    Indexing in DBMS is a technique to improve the performance of queries by creating a data structure that allows for faster retrieval of data.

    • Indexes are created on columns in a database table to speed up the retrieval of rows that match a certain condition.

    • Types of indexes include clustered, non-clustered, unique, and composite indexes.

    • Examples of indexing techniques include B-tree, hash, and bitmap indexes.

    • Indexing can...

  • Answered by AI
  • Q2. Find whether two strings are or not anagrams
  • Ans. 

    Check if two strings are anagrams by comparing the sorted characters in each string.

    • Sort the characters in both strings and compare if they are equal.

    • Ignore spaces and punctuation when comparing the strings.

    • Example: 'listen' and 'silent' are anagrams.

    • Example: 'hello' and 'world' are not anagrams.

  • Answered by AI
Round 3 - Technical 

(2 Questions)

  • Q1. Inorder traversal without recursion
  • Ans. 

    Use a stack to simulate the recursive inorder traversal process

    • Create an empty stack to store nodes

    • Start with the root node and push it onto the stack

    • While the stack is not empty, keep traversing left and pushing nodes onto the stack

    • Once you reach a leaf node, pop it from the stack, print its value, and move to its right child

    • Repeat the process until all nodes have been visited

  • Answered by AI
  • Q2. How to make a class final
  • Ans. 

    To make a class final, use the 'final' keyword in the class declaration.

    • Use the 'final' keyword before the 'class' keyword in the class declaration

    • A final class cannot be subclassed or extended

    • Final classes are often used for utility classes or classes that should not be modified

  • Answered by AI

Skills evaluated in this interview

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

(4 Questions)

  • Q1. Data structure and algorithm
  • Q2. Some tricky logical question
  • Q3. Stack and queue
  • Q4. Some basic question about system Design
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
-

I applied via Referral and was interviewed in Jun 2024. There were 3 interview rounds.

Round 1 - Coding Test 

Hackerrank Coding Test, Leetcode medium questions

Round 2 - Coding Test 

HLD test, was asked to design an online coding platform like leetcode

Round 3 - Technical 

(2 Questions)

  • Q1. Most interesting project you have worked on
  • Q2. How do you handle conflict at workplace

Interview Preparation Tips

Interview preparation tips for other job seekers - - Prepare leetcode medium
- Prepare HLD well
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Find the leaves of the tree.
  • Ans. 

    Leaves of a tree are the nodes with no children in a tree data structure.

    • Traverse the tree and identify nodes with no children.

    • Use depth-first search or breadth-first search algorithms to find leaves.

    • Examples: In a binary tree, leaves are nodes with no left or right child.

    • In a general tree, leaves are nodes with no children in their child list.

  • Answered by AI
  • Q2. Find the LCA of tree.
  • Ans. 

    The Lowest Common Ancestor (LCA) of a tree is the shared ancestor of two nodes farthest from the root.

    • Start from the root and traverse the tree to find the paths from the root to the two nodes.

    • Compare the paths to find the last common node between them, which is the LCA.

    • If one of the nodes is an ancestor of the other, then the ancestor node is the LCA.

  • Answered by AI
Round 2 - HR 

(2 Questions)

  • Q1. What projects you worked upon?
  • Ans. 

    I have worked on projects involving web development, mobile app development, and data analysis.

    • Developed a web application using React and Node.js for a client in the e-commerce industry

    • Created a mobile app using Flutter for a startup in the healthcare sector

    • Performed data analysis on customer behavior using Python and SQL for a marketing company

  • Answered by AI
  • Q2. What internships you did?
  • Ans. 

    I completed internships at ABC Company and XYZ Company during my undergraduate studies.

    • Interned at ABC Company working on web development projects

    • Interned at XYZ Company assisting with software testing and quality assurance

    • Gained hands-on experience in coding, debugging, and problem-solving

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare tree and graph well.

Skills evaluated in this interview

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

Some database questions,some java questions .

Round 2 - Technical 

(3 Questions)

  • Q1. What is the difference between javascript and jQuery.
  • Ans. 

    JavaScript is a programming language used for web development, while jQuery is a library built with JavaScript to simplify HTML document traversal and manipulation.

    • JavaScript is a programming language, while jQuery is a library written in JavaScript.

    • JavaScript can be used for a wide range of tasks, while jQuery is mainly used for DOM manipulation and event handling.

    • JavaScript is a core technology for web development, w...

  • Answered by AI
  • Q2. Define different types of join
  • Ans. 

    Different types of joins are used in SQL to combine rows from two or more tables based on a related column between them.

    • Inner Join: Returns rows when there is at least one match in both tables.

    • Left Join (or Left Outer Join): Returns all rows from the left table and the matched rows from the right table.

    • Right Join (or Right Outer Join): Returns all rows from the right table and the matched rows from the left table.

    • Full ...

  • Answered by AI
  • Q3. Define multithreading concept and exception handling.
  • Ans. 

    Multithreading allows multiple threads to run concurrently, while exception handling deals with errors in a program.

    • Multithreading involves running multiple threads simultaneously to improve performance and responsiveness.

    • Threads share the same memory space but have their own program counter and registers.

    • Exception handling is a mechanism to handle errors or exceptional situations in a program.

    • It helps prevent the prog...

  • Answered by AI

Skills evaluated in this interview

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

(1 Question)

  • Q1. Tell me about yourself
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

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

Round 1 - Coding Test 

React based
problem solving round

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Nov 2023. There were 2 interview rounds.

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 - Technical 

(2 Questions)

  • Q1. Given array of integer create subarray with sum = 0
  • Ans. 

    Create subarrays with sum = 0 from given array of integers.

    • Iterate through the array and keep track of the running sum.

    • Store the running sum in a hashmap and check if the current sum - any previous sum equals 0.

    • If yes, then the subarray between those two indices has a sum of 0.

  • Answered by AI
  • Q2. Left view of binary tree
  • Ans. 

    The left view of a binary tree is the set of nodes visible when the tree is viewed from the left side.

    • Traverse the tree in a level order manner and keep track of the first node at each level.

    • Use a queue to store nodes at each level and update the left view nodes accordingly.

    • Example: For a binary tree with root node 1, left child 2, and right child 3, the left view would be [1, 2].

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
Not Selected
Round 1 - HR 

(1 Question)

  • Q1. Career planning and further plan

Amazon Interview FAQs

How many rounds are there in Amazon ml engineer interview?
Amazon interview process usually has 1 rounds. The most common rounds in the Amazon interview process are Aptitude Test.
How to prepare for Amazon ml engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Amazon. The most common topics and skills that interviewers at Amazon expect are Machine Learning, Architectural Design, CCTV Monitoring, Cloud Computing and Cloud Services.

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Amazon ml engineer Interview Process

based on 1 interview

Interview experience

3
  
Average
View more

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Amazon ml engineer Salary
based on 8 salaries
₹13.2 L/yr - ₹26.7 L/yr
103% more than the average ml engineer Salary in India
View more details

Amazon ml engineer Reviews and Ratings

based on 1 review

5.0/5

Rating in categories

5.0

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5.0

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3.0

Salary

5.0

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5.0

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5.0

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5.0

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Explore 1 Review and Rating
ML Engineer, AWS QuickSight

Bangalore / Bengaluru

2-5 Yrs

Not Disclosed

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