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PayU Payments Senior Software Engineer Interview Questions and Answers

Updated 13 Feb 2025

PayU Payments Senior Software Engineer Interview Experiences

2 interviews found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I appeared for an interview in Jan 2025.

Round 1 - One-on-one 

(1 Question)

  • Q1. Deep dive into java concepts. Max diameter of a tree in java.
  • Ans. 

    Max diameter of a tree in Java is the longest path between any two nodes in a tree.

    • The diameter of a tree can be calculated by finding the longest path between any two nodes in the tree.

    • This can be done by finding the longest path from the root to a leaf node, and then finding the longest path from another leaf node to the root.

    • The sum of these two paths gives the diameter of the tree.

  • Answered by AI
Round 2 - One-on-one 

(1 Question)

  • Q1. Lld of loan and borrower design. Design dbs schema. About connection pool, db isolation.
Round 3 - One-on-one 

(1 Question)

  • Q1. Hiring manager round, more about previous experience and some hypothetical questions.
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Coding Test 

Search in Rotated sorted array

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Interview Preparation Tips

Round: Technical Interview
Tips: Have a good grasp of DS algo, java, etc.(Here CGPA doesn't matter)

General Tips: Do’s and Don’ts :
1. Be confident and to be confident prepare well.
2. Set the priority of your companies 
3. Don't start preparation at end. Don't ignore the content of resume.

Be confident and start preparation as soon as possible.
College Name: IIT Kanpur
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
Not Selected
Round 1 - Coding Test 

Implement thread safe load balancer.
focus on input validations and cover all corner cases in tests

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

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

Round 1 - HR 

(2 Questions)

  • Q1. Explain Concurrency
  • Ans. 

    Concurrency is the ability of a system to execute multiple tasks simultaneously.

    • Concurrency allows multiple tasks to run concurrently, improving performance and efficiency.

    • Concurrency can be achieved through multithreading or multiprocessing.

    • Example: A web server handling multiple requests simultaneously using multithreading.

  • Answered by AI
  • Q2. Explain Acid principles
  • Ans. 

    ACID principles are a set of properties that guarantee database transactions are processed reliably.

    • Atomicity: Transactions are all or nothing. If one part of the transaction fails, the entire transaction is rolled back.

    • Consistency: Transactions bring the database from one valid state to another. All constraints are satisfied.

    • Isolation: Transactions are isolated from each other until they are completed.

    • Durability: Once...

  • Answered by AI

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I applied via Approached by Company

Round 1 - Technical 

(1 Question)

  • Q1. Low Level Design: How to do rate limiting for a platform serving 100K requests per second.
  • Ans. 

    Implement rate limiting for a platform serving 100K requests per second.

    • Use a token bucket algorithm to limit the rate of incoming requests.

    • Set a maximum number of tokens in the bucket to control the rate.

    • Refill the bucket at a constant rate to allow bursts of requests.

    • Track the timestamp of the last request to enforce the rate limit.

    • Consider using a distributed rate limiting system for scalability.

    • Monitor and adjust t...

  • Answered by AI

Skills evaluated in this interview

I applied via Recruitment Consultant and was interviewed in Sep 2021. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. Hackkerrank (3 questions 90 (LC-Medium &Easy)).
  • Q2. Round 1 DS&Alog Problem solving (LC- Medium) .Round 2 DS & Algo LC-Medium.Round 3 design LinkedIn Data modelling and HLD. Round 4 HLD+LLD+Data modelling for restaurant reservation system.

Interview Preparation Tips

Interview preparation tips for other job seekers - Practice Practice & Practice.Be prepared for a System design interview.Trust me it will be easy
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
Round 2 - One-on-one 

(1 Question)

  • Q1. Easy question from leetcode.
Round 3 - One-on-one 

(1 Question)

  • Q1. Just normal questions based on resume and previous projects
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Jan 2024. There were 2 interview rounds.

Round 1 - Coding Test 

Codility Test with leetcode medium questions

Round 2 - Technical 

(4 Questions)

  • Q1. Built a react feature
  • Ans. 

    Built a react feature

    • Identify the specific feature to be built

    • Design the component hierarchy and state management

    • Implement the feature using React components and hooks

    • Test the feature for functionality and user experience

    • Refactor and optimize the code for performance

  • Answered by AI
  • Q2. Questions based around react
  • Q3. How to implement timer
  • Ans. 

    A timer can be implemented using a combination of system time and a loop that checks for elapsed time.

    • Get the current system time at the start of the timer

    • Enter a loop that continuously checks the difference between the current system time and the start time

    • When the desired time has elapsed, perform the desired action or trigger an event

  • Answered by AI
  • Q4. How to implement useEffect
  • Ans. 

    useEffect is a hook in React that allows you to perform side effects in functional components.

    • useEffect is used to handle side effects in React components.

    • It takes two arguments: a function and an optional array of dependencies.

    • The function inside useEffect is executed after the component renders.

    • The optional array of dependencies determines when the effect should run.

    • If the array of dependencies is empty, the effect r...

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Visa Senior Software Engineer interview:
  • React
Interview preparation tips for other job seekers - Good experience overall, rejected

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
6-8 weeks
Result
Not Selected

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

Round 1 - Technical 

(3 Questions)

  • Q1. Given two sorted arrays, a (m elements, size m+n) and b (n elements, size n) merge both the arrays into the first array a.
  • Ans. 

    Merge two sorted arrays into the first array

    • Start from the end of both arrays and compare elements

    • Place the larger element at the end of the first array

    • Continue this process until all elements are merged

  • Answered by AI
  • Q2. Given a monolith architecture, how would you scale it to handle 3x the traffic and also improve response time on API's during peak hours by using cache
  • Ans. 

    To scale a monolith architecture and improve response time, use horizontal scaling and implement caching.

    • Implement horizontal scaling by adding more instances of the monolith application behind a load balancer

    • Use a distributed cache to store frequently accessed data and reduce database queries

    • Implement caching at different levels such as application-level caching, database query caching, and HTTP response caching

    • Use a ...

  • Answered by AI
  • Q3. Class design for a cache implementation, implement get(), put(), initialization methods
  • Ans. 

    Design a cache class with get(), put(), and initialization methods.

    • Define a class with a data structure to store key-value pairs.

    • Implement a get() method to retrieve a value from the cache based on a given key.

    • Implement a put() method to add or update a key-value pair in the cache.

    • Implement an initialization method to set the initial capacity and eviction policy of the cache.

    • Consider using a hash map or a linked list t...

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Visa Senior Software Engineer interview:
  • Arrays
  • Trees

Skills evaluated in this interview

PayU Payments Interview FAQs

How many rounds are there in PayU Payments Senior Software Engineer interview?
PayU Payments interview process usually has 2 rounds. The most common rounds in the PayU Payments interview process are One-on-one Round and Coding Test.
How to prepare for PayU Payments Senior Software 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 PayU Payments. The most common topics and skills that interviewers at PayU Payments expect are Financial Services, Agile, Data Structures, MySQL and Python.
What are the top questions asked in PayU Payments Senior Software Engineer interview?

Some of the top questions asked at the PayU Payments Senior Software Engineer interview -

  1. Deep dive into java concepts. Max diameter of a tree in ja...read more
  2. Lld of loan and borrower design. Design dbs schema. About connection pool, db i...read more

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PayU Payments Senior Software Engineer Interview Process

based on 3 interviews

Interview experience

5
  
Excellent
View more
PayU Payments Senior Software Engineer Salary
based on 183 salaries
₹12.2 L/yr - ₹42 L/yr
84% more than the average Senior Software Engineer Salary in India
View more details

PayU Payments Senior Software Engineer Reviews and Ratings

based on 21 reviews

4.1/5

Rating in categories

3.5

Skill development

3.9

Work-life balance

3.7

Salary

3.5

Job security

4.0

Company culture

3.1

Promotions

3.6

Work satisfaction

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