PhonePe Senior Sdet Software Engineer Interview Questions and Answers

Q1. Array question from leetcode
Add your answer
Q2. Stack question from leetcode
Add your answer

Two problems each of array and stack

Data structure and algo questions from leetcode

Machine coding assignment

Q1. Design Content Delivery Network
Ans. 
Designing a Content Delivery Network (CDN) for efficient content distribution.
• Identify target audience and content types

• Select appropriate CDN providers based on needs (e.g. Akamai, Cloudflare)

• Implement caching strategies for static and dynamic content

• Optimize network routing for faster delivery

• Monitor performance and adjust as needed
Answered by AI
Add your answer
Q2. Design notification service
Ans. 
Design a notification service for sending alerts to users.
• Identify types of notifications (email, SMS, push notifications)

• Implement a notification queue to handle high volume of notifications

• Allow users to customize notification preferences

• Include monitoring and logging for tracking delivery status

• Consider scalability and reliability of the service
Answered by AI
Add your answer

Regex generator- used dp

Asked program for reverse string

Q1. Swap two numbers without using a third integer.
Ans. 
Swap two numbers without using a third integer
• Use XOR operation to swap two numbers without using a third integer

• Example: a = 5, b = 7. a = a XOR b, b = a XOR b, a = a XOR b

• After swapping: a = 7, b = 5
Answered by AI
Add your answer
Q2. Overloading & Overriding
Add your answer
Q3. TestNG annotation
Add your answer
Q4. Jenkins Setup and how to configure a job and update the report to the team.
Ans. 
Jenkins setup involves configuring jobs and updating reports for the team.
• Install Jenkins on a server or local machine

• Create a new job by selecting 'New Item' and choosing the job type

• Configure the job by setting up build triggers, source code management, build steps, and post-build actions

• Add plugins for reporting tools like JUnit or HTML Publisher to generate reports

• Update the report by viewing the job's build histor...read more
Answered by AI
Add your answer

Q1. Reverse a integer
Ans. 
Reverse an integer by converting it to a string and then reversing the string
• Convert the integer to a string

• Reverse the string

• Convert the reversed string back to an integer
Answered by AI
Add your answer

Had questions on graph

Q1. Binary Search leftmost rightmost
Add your answer

Q1. Monotonic stack question
Add your answer

Q1. System design round, discussed subscriber publisher design pattern
Add your answer

Q1. LinkedList / Tree
Add your answer
Q2. DP - Recursion - PnC
Add your answer

Q1. Projects , Last Exp
Add your answer

Aptitude questions to be asked in this round

Write a Java program to sort array in ascending order