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American Express Senior Engineer Interview Questions and Answers

Updated 19 Jul 2024

American Express Senior Engineer Interview Experiences

2 interviews found

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Project related
Round 2 - Technical 

(1 Question)

  • Q1. Scenario based question on kafka
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Design a system like youtube
  • Ans. 

    Design a system similar to YouTube for video sharing and streaming

    • Implement user authentication and authorization for uploading and viewing videos

    • Create a database to store video metadata, user information, and comments

    • Develop a recommendation algorithm based on user preferences and viewing history

    • Utilize a content delivery network (CDN) for efficient video streaming

    • Include features like video monetization, live stream

  • Answered by AI

Skills evaluated in this interview

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Interview questions from similar companies

I applied via Walk-in and was interviewed before Oct 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Asked about career expectations

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep Calm and be confident

I was interviewed before Jan 2021.

Round 1 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

I couldn't find an optimal approach to the first question, so she skipped that question and proceeded to next questions. Remaining questions I have answered satisfactorily.

  • Q1. 

    Subset Sum Equal To K Problem Statement

    Given an array/list of positive integers and an integer K, determine if there exists a subset whose sum equals K.

    Provide true if such a subset exists, otherwise r...

  • Ans. 

    Given an array of positive integers and an integer K, determine if there exists a subset whose sum equals K.

    • Use dynamic programming to solve this problem efficiently

    • Create a 2D array to store if a subset with a particular sum exists

    • Iterate through the array and update the 2D array accordingly

    • Check if the value at the end of the iteration is true for the given K

  • Answered by AI
  • Q2. 

    BFS Traversal in a Graph

    Given an undirected and disconnected graph G(V, E) where V vertices are numbered from 0 to V-1, and E represents edges, your task is to output the BFS traversal starting from the ...

  • Ans. 

    BFS traversal in a disconnected graph starting from vertex 0.

    • Implement BFS algorithm to traverse the graph starting from vertex 0.

    • Use a queue to keep track of visited nodes and their neighbors.

    • Ensure to print the traversal sequence in the correct order.

    • Handle disconnected components by checking for unvisited nodes.

    • Follow the BFS approach of exploring neighbors before moving to the next level.

  • Answered by AI
Round 2 - HR 

(1 Question)

Round duration - 60 minutes
Round difficulty - Easy

I told that my strength is problem solving and I can always find a way when there is a bottle-neck. Gave some examples of my experiences while doing my assignments.

  • Q1. 

    Replace Spaces in a String

    Given a string STR consisting of words separated by spaces, your task is to replace all spaces between words with the characters "@40".

    Input:

    The first line contains an integ...
  • Ans. 

    Replace spaces in a string with '@40'.

    • Iterate through each character in the string

    • Replace spaces with '@40'

    • Return the modified string

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAPaypal interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 6 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 was interviewed before Jan 2021.

Round 1 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical Interview Round with questions based on Data structures, OOPS and SQL.

  • Q1. 

    Delete a Node from a Linked List

    You are provided with a linked list of integers. Your task is to implement a function that deletes a node located at a specified position 'POS'.

    Input:

    The first line co...
  • Ans. 

    Implement a function to delete a node from a linked list at a specified position.

    • Traverse the linked list to find the node at the specified position.

    • Update the pointers of the previous and next nodes to skip the node to be deleted.

    • Handle edge cases such as deleting the head or tail of the linked list.

    • Ensure to free the memory of the deleted node to avoid memory leaks.

  • Answered by AI
  • Q2. Write an SQL query to find the nth highest salary.
  • Ans. 

    SQL query to find the nth highest salary

    • Use the ORDER BY clause to sort salaries in descending order

    • Use the LIMIT and OFFSET clauses to skip the first n-1 highest salaries

    • Combine the above steps in a single query to find the nth highest salary

  • Answered by AI
  • Q3. Can you explain the concepts of Object-Oriented Programming (OOP)?
  • Ans. 

    OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

    • OOP focuses on creating objects that interact with each other to solve problems.

    • Key concepts include encapsulation, inheritance, and polymorphism.

    • Encapsulation involves bundling data and methods that operate on the data into a single unit.

    • Inheritance allows classes to inherit at...

  • Answered by AI
Round 2 - Face to Face 

(4 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Was asked me about my favorite technologies, What i liked about Facebook. And asked me to design a cinema ticket reservation web site­ like the one satyam has.

  • Q1. 

    Kth Largest Element Problem

    Given an array containing N distinct positive integers and a number K, determine the Kth largest element in the array.

    Example:

    Input:
    N = 6, K = 3, array = [2, 1, 5, 6, 3, ...
  • Ans. 

    Find the Kth largest element in an array of distinct positive integers.

    • Sort the array in non-increasing order and return the Kth element.

    • Handle multiple test cases efficiently.

    • Ensure all elements in the array are distinct.

  • Answered by AI
  • Q2. What are virtual functions?
  • Ans. 

    Virtual functions are functions in a base class that are overridden in derived classes to achieve runtime polymorphism.

    • Virtual functions are declared in a base class with the 'virtual' keyword.

    • They are overridden in derived classes using the 'override' keyword.

    • They allow a function to be called based on the runtime type of an object.

    • Virtual functions enable dynamic binding and late binding in C++.

    • Example: virtual void ...

  • Answered by AI
  • Q3. Design a Cinema Ticket Reservation System.
  • Ans. 

    Design a Cinema Ticket Reservation System

    • Use a database to store movie information, showtimes, and seat availability

    • Allow users to search for movies, select showtimes, and choose seats

    • Implement a payment system for ticket purchases

    • Send confirmation emails with QR codes for ticket validation

  • Answered by AI
  • Q4. In how many attempts can you find a defective ball among 10 given balls using a two-pan balance scale?
  • Ans. 

    You can find a defective ball among 10 given balls in 2 attempts using a two-pan balance scale.

    • Divide the 10 balls into two groups of 5 each.

    • Weigh the two groups on the balance scale.

    • If one group is heavier, it contains the defective ball. If they are equal, the defective ball is in the remaining 5 balls.

    • Divide the group of 5 balls with the defective one into two groups of 2 and 3 balls.

    • Weigh the two groups on the bala...

  • Answered by AI
Round 3 - HR 

(1 Question)

Round duration - 30 minutes
Round difficulty - Easy

HR round that lasted for about 30 minutes. The interviewer asked me questions to know more about me and a puzzle.

  • Q1. Can you tell me about your projects and your extracurricular activities?

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAPaypal interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 3 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 was interviewed before Jan 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 90 minutes
Round difficulty - Medium

It was conducted in Hacker rank which consisted of 10 aptitude questions that included C, C++, Java MCQ. 2 programming questions were also given.

  • Q1. 

    Minimum Cost Path Problem Statement

    Given an N x M matrix filled with integers, determine the minimum sum obtainable from a path that starts at a specified cell (x, y) and ends at the top left corner of t...

  • Ans. 

    The problem involves finding the minimum sum path from a specified cell to the top left corner of a matrix.

    • Start from the specified cell and calculate the minimum sum path to reach the top left corner using dynamic programming.

    • Consider the three possible moves: down, right, and down-right diagonal.

    • Keep track of the minimum sum at each cell and update it based on the minimum of the three possible moves.

    • Finally, the mini...

  • Answered by AI
  • Q2. 

    Balanced Parentheses Combinations

    Given an integer N representing the number of pairs of parentheses, find all the possible combinations of balanced parentheses using the given number of pairs.

    Explanati...

  • Ans. 

    Generate all possible combinations of balanced parentheses for a given number of pairs.

    • Use backtracking to generate all possible combinations of balanced parentheses.

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

    • Recursively generate combinations by adding open parentheses if there are remaining, and closing parentheses if the number of open parentheses is greater than the number of clo...

  • Answered by AI
Round 2 - Face to Face 

(4 Questions)

Round duration - 60 minutes
Round difficulty - Medium

Technical round with questions based on data structures, oops and networking.

  • Q1. 

    Character Counting Challenge

    Create a program that counts and prints the total number of specific character types from user input. Specifically, you need to count lowercase English alphabets, numeric digi...

  • Ans. 

    Create a program to count lowercase alphabets, digits, and white spaces from user input until '$' is encountered.

    • Read characters from input stream until '$' is encountered

    • Count lowercase alphabets, digits, and white spaces separately

    • Print the counts of each character type as three integers separated by spaces

  • Answered by AI
  • Q2. 

    K Largest Elements Problem Statement

    Given an unsorted array containing 'N' integers, you are required to find 'K' largest elements from the array and return them in non-decreasing order.

    Input:

    The fir...
  • Ans. 

    Find K largest elements in an unsorted array and return them in non-decreasing order.

    • Sort the array in non-decreasing order.

    • Return the last K elements of the sorted array.

  • Answered by AI
  • Q3. How can you check whether you have an internet connection on your system?
  • Ans. 

    To check internet connection on a system, you can use various methods like pinging a website or checking network status.

    • Use ping command to check connectivity to a website (e.g. ping www.google.com)

    • Check network status using network settings or command line tools

    • Try accessing a website or online service to verify internet connection

  • Answered by AI
  • Q4. What happens when you type a URL in a web browser?
  • Ans. 

    When you type a URL in a web browser, the browser sends a request to the server hosting the website, which then responds with the necessary files to display the webpage.

    • Browser checks cache for DNS resolution

    • If not found, browser sends a DNS query to resolve the domain name to an IP address

    • Browser establishes a TCP connection with the server

    • Browser sends an HTTP request to the server for the webpage

    • Server processes the...

  • Answered by AI
Round 3 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Medium

Technical round with questions based on data structures, oops and networking.

  • Q1. 

    Counting Sort Problem Statement

    Ninja is learning about sorting algorithms, specifically those that do not rely on comparisons. Can you help Ninja implement the counting sort algorithm?

    Example:

    Input:
    ...
  • Ans. 

    Implement counting sort algorithm to sort an array of integers without comparisons.

    • Count the frequency of each element in the input array.

    • Calculate the prefix sum of frequencies to determine the position of each element in the sorted array.

    • Place each element in its correct position based on the prefix sum.

    • Time complexity of counting sort is O(n+k), where n is the number of elements and k is the range of input.

    • Example: ...

  • Answered by AI
  • Q2. What are the applications of the Fibonacci series in real life?
  • Ans. 

    The Fibonacci series has applications in various fields such as mathematics, computer science, art, and nature.

    • Used in algorithms for optimization problems and dynamic programming.

    • Found in nature, such as the arrangement of leaves on a stem, the branching of trees, and the spiral shapes of shells.

    • Applied in financial markets for predicting stock prices and analyzing market trends.

    • Utilized in art and design for creating

  • Answered by AI
Round 4 - HR 

Round duration - 30 minutes
Round difficulty - Easy

HR round where the interviewer asked questions to know more about me.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAPaypal interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 6 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 was interviewed in Oct 2016.

Interview Questionnaire 

4 Questions

  • Q1. Select any five companies you would invest in and why given the required metrics.
  • Ans. 

    I cannot provide investment advice, but here are five companies that have shown strong financial performance in recent years.

    • Apple - consistently high revenue and profit margins

    • Amazon - dominant player in e-commerce and cloud computing

    • Microsoft - strong growth in cloud computing and enterprise software

    • Alphabet (Google) - diversified revenue streams and strong advertising business

    • Visa - dominant player in the payments i

  • Answered by AI
  • Q2. Questions based on case study.
  • Q3. Detailed discussions on the indian economy?
  • Q4. Brexit vote and how it would effect the indian economy?
  • Ans. 

    The Brexit vote could have both positive and negative effects on the Indian economy.

    • Positive effects: Increased trade opportunities with the UK, potential for attracting foreign investments from companies relocating from the UK.

    • Negative effects: Uncertainty in global markets leading to volatility in exchange rates, potential decline in exports to the UK.

    • Example: Indian IT companies may face challenges due to stricter i...

  • Answered by AI

Interview Preparation Tips

Round: Case Study Interview
Experience: We were first taught the basics of operations involved in working with an investment bank. Based on the workshop we were given a case study with a list of companies to select the one's which are potencial candidates for investments. We were all divided into groups of 5 students.

Round: Test
Experience: The test was basic. Economical aptitude requires prior knowledge of economics concepts. The review topicwas GST bill.
Duration: 1 hour
Total Questions: 41

Round: Stress Interview
Tips: It is important to be aware about the current events and economies.

Skills: Economic Affairs, Financial Economics, Knowledge On Current Affairs
College Name: Thapar University, Patiala

Interview Questionnaire 

5 Questions

  • Q1. Tell me about yourself
  • Ans. 

    I am a data analyst with experience in analyzing and interpreting complex data sets to drive business insights.

    • Experienced in using statistical analysis tools such as Python, R, and SQL

    • Proficient in data visualization tools like Tableau and Power BI

    • Skilled in data cleaning, data mining, and data modeling techniques

    • Strong problem-solving and critical thinking skills

    • Effective communicator and team player

    • Example: I have w...

  • Answered by AI
  • Q2. Biggest hurdle you faced during the work you did t organise the tech fest of your college
  • Ans. 

    The biggest hurdle I faced during organizing the tech fest of my college was securing sponsorships.

    • Difficulty in convincing companies to sponsor the event

    • Limited budget for organizing a large-scale tech fest

    • Competition with other college events for sponsorships

    • Negotiating sponsorship deals and ensuring deliverables

    • Finding sponsors aligned with the theme and objectives of the tech fest

  • Answered by AI
  • Q3. Would you go for an MBA?
  • Ans. 

    Yes, pursuing an MBA can enhance my skills and open up new career opportunities.

    • An MBA can provide a strong foundation in business and management principles.

    • It can help develop analytical and problem-solving skills.

    • An MBA can broaden my network and provide access to valuable connections.

    • It can open up leadership roles and higher-level positions in organizations.

    • Having an MBA can increase earning potential and job prosp...

  • Answered by AI
  • Q4. Reliance fresh wants to open a store in north-eastern part of India. Should it or should it not?
  • Ans. 

    Yes, Reliance Fresh should open a store in the north-eastern part of India.

    • The north-eastern part of India has a growing population and increasing consumer demand.

    • Reliance Fresh can tap into the untapped market potential in the region.

    • Opening a store in the north-eastern part of India can help Reliance Fresh expand its presence and increase its market share.

    • Reliance Fresh can leverage its existing supply chain and dist...

  • Answered by AI
  • Q5. Guesstimate the number of people travelling by local metro in mumbai
  • Ans. 

    The number of people travelling by local metro in Mumbai is estimated to be in millions.

    • Mumbai has a population of over 20 million people.

    • The local metro is a popular mode of transportation in Mumbai.

    • During peak hours, the metro trains are usually crowded.

    • The metro network in Mumbai is extensive, covering various parts of the city.

    • The number of daily commuters on the metro can be estimated based on population density a

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
Experience: cpi above 7.0

Round: Test
Experience: Basic maths, shares related questions and english
Duration: 1 hour
Total Questions: 40

Round: Technical + HR Interview
Experience: Very easy round.

Skills: Aptitude, Communication, Quantitative Aptitude, Leadership Skills, Technical Skill
College Name: IIT Kanpur

Interview Preparation Tips

Round: Resume Shortlist
Experience: Initial shortlisting was based on resume where CGPA cutoff was around 8.

Round: Test
Experience: Questions were related to Data interpretation and Aptitude,which mostly tests a person's patience too.Around 20-25 were shortlisted after this round.

Round: Case Study Interview
Experience: Questions relating to case studies and course done in your maths were asked.

Round: HR Interview
Experience: In this round,the candidate was asked to talk about himself, his qualities and mostly the activities he was involved in the past 4-5 years of his life.

Skill Tips: A proper revision of math courses will also be useful during interviews and can do much better by having preparation in case studies.
Skills: Good communication skills
College Name: IIT MADRAS

I was interviewed before Mar 2016.

Interview Questionnaire 

2 Questions

  • Q1. Some technical questions were asked
  • Q2. They spring hibernate MVC flow and core java and Oracle connectivity questions

Interview Preparation Tips

Round: Technical + HR Interview
Experience: There was a Team manager and his junior for the interview

American Express Interview FAQs

How many rounds are there in American Express Senior Engineer interview?
American Express interview process usually has 1-2 rounds. The most common rounds in the American Express interview process are Technical.
How to prepare for American Express Senior 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 American Express. The most common topics and skills that interviewers at American Express expect are Finance, Open Source, Agile, Coding and Career Development.
What are the top questions asked in American Express Senior Engineer interview?

Some of the top questions asked at the American Express Senior Engineer interview -

  1. design a system like yout...read more
  2. scenario based question on ka...read more
  3. Project rela...read more

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American Express Senior Engineer Interview Process

based on 4 interviews

Interview experience

3.8
  
Good
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American Express Senior Engineer Salary
based on 102 salaries
₹15.4 L/yr - ₹57 L/yr
318% more than the average Senior Engineer Salary in India
View more details

American Express Senior Engineer Reviews and Ratings

based on 10 reviews

4.2/5

Rating in categories

3.8

Skill development

4.2

Work-life balance

4.4

Salary

4.3

Job security

4.3

Company culture

4.1

Promotions

4.1

Work satisfaction

Explore 10 Reviews and Ratings
Senior Engineer I

Chennai

9-17 Yrs

Not Disclosed

Senior Engineer I

Gurgaon / Gurugram

9-17 Yrs

Not Disclosed

Senior Engineer I

Bangalore / Bengaluru

9-17 Yrs

Not Disclosed

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