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PayPal Interview Questions, Process, and Tips

Updated 2 Mar 2025

Top PayPal Interview Questions and Answers

  • Q1. Cycle Detection in a Singly Linked List Determine if a given singly linked list of integers forms a cycle or not. A cycle in a linked list occurs when a node's next poin ...read more
    asked in Software Engineer interview
  • Q2. Maximum Path Sum in a Matrix Given an N*M matrix filled with integer numbers, determine the maximum sum that can be obtained from a path starting from any cell in the fi ...read more
    asked in Software Developer interview
  • Q3. Sum Queries in a Sorted Array Given two arrays arr and queries , your task is to determine the sum of all elements in arr that are less than or equal to each element in ...read more
    asked in SDE-2 interview
View all 177 questions

PayPal Interview Experiences

Popular Designations

207 interviews found

I was interviewed in Aug 2017.

Interview Questionnaire 

17 Questions

  • Q1. Input a file. Select first 3 lines of the file. Select the longest line and count the number of words in that line. It was easy. I used Java methods to solve the problem. I explained the logic and he accep...
  • Ans. 

    The program reads a file and selects the first 3 lines. It then identifies the longest line and counts the number of words in that line.

    • Read the file using appropriate file handling methods

    • Store the first 3 lines in an array of strings

    • Iterate through the array to find the longest line

    • Count the number of words in the longest line using string manipulation methods

  • Answered by AI
  • Q2. Given an array of strings, find the shortest length palindrome. I solved it in O(n2)
  • Q3. There exists a 3x3 matrix, start from the first element reach the last element of the matrix, between each edges there exists a weight. Reach the destination such that the sum of weights should be small. I...
  • Ans. 

    The question is about finding the shortest path in a 3x3 matrix with weighted edges.

    • This is a graph traversal problem.

    • Use a graph algorithm like Dijkstra's algorithm or A* search to find the shortest path.

    • Assign weights to the edges and calculate the sum of weights for each possible path.

    • Choose the path with the smallest sum of weights as the shortest path.

  • Answered by AI
  • Q4. Application of Fibonacci series in day-to-day life.
  • Ans. 

    The Fibonacci series can be applied in day-to-day life for various purposes.

    • Financial planning: Fibonacci numbers can be used to calculate investment growth and determine optimal investment strategies.

    • Architecture and design: Fibonacci ratios can be used to create aesthetically pleasing designs and layouts.

    • Nature and biology: Fibonacci patterns can be observed in the growth of plants, arrangement of leaves, and formati...

  • Answered by AI
  • Q5. Balancing parantheses – I defined my own algorithm. He tested it for all test cases. He told me some modifications and I rectified my algorithm.
  • Q6. There was a discussion about my projects and he was quite satisfied with it.
  • Q7. He asked me what happens when I type www.google.com in the web browser. -----/
  • Q8. He asked me how I will check whether I have internet connection in my system? ping www.google.com will respond.
  • Q9. Find the kth largest element in an array. I used MaxHeap concept but he asked me to define it using MinHeap. I modified the code and he accepted it.
  • Q10. When you search for a particular product in amazon, it displays some of the search results. But, only few particular products which are available in amazon are displayed, not all. How does this happen? I ...
  • Ans. 

    Amazon displays only a subset of search results based on various factors like relevance, popularity, and user preferences.

    • Amazon uses algorithms to determine which products to display in search results.

    • Factors considered include product relevance, customer reviews, sales rank, and availability.

    • Machine learning techniques may be used to personalize search results based on user behavior and preferences.

    • Amazon also consid...

  • Answered by AI
  • Q11. What data structure do they use? Hash tables.
  • Ans. 

    Hash tables are a data structure that uses a hash function to map keys to values, providing efficient lookup, insertion, and deletion.

    • Hash tables use a hash function to convert keys into array indices.

    • They provide constant-time average case complexity for search, insert, and delete operations.

    • Collisions can occur when different keys map to the same index, which can be resolved using techniques like chaining or open add...

  • Answered by AI
  • Q12. What will be the key and what will be the values? The product will be the key. The brands will be the values.
  • Ans. 

    The product will be the key and the brands will be the values.

    • The key in this case refers to the unique identifier for each product.

    • The values are the different brands associated with each product.

    • For example, if the product is a smartphone, the key could be the model number and the values could be the different brands that manufacture that model.

  • Answered by AI
  • Q13. Do you know Radix Sort? Where it is used? Radix sort can be applied in amazon.
  • Ans. 

    Radix sort is a sorting algorithm that sorts integers by processing individual digits from least significant to most significant.

    • Radix sort is a non-comparative sorting algorithm.

    • It sorts numbers by grouping them based on each digit's value.

    • It is commonly used for sorting strings in lexicographic order.

    • Radix sort has linear time complexity, making it efficient for large datasets.

  • Answered by AI
  • Q14. Running time of Radix sort? O(nk)
  • Ans. 

    Radix sort has a running time of O(nk), where n is the number of elements and k is the length of the longest element.

    • Radix sort is a non-comparative sorting algorithm that sorts elements by their individual digits or characters.

    • It works by distributing the elements into 10 buckets based on the value of the least significant digit, then repeatedly redistributing them based on the next significant digit.

    • The process conti...

  • Answered by AI
  • Q15. But amazon can do the search in O(n). Why it has to go for O(nk)? For data structures like Hash tables and for large data, n will be large. So O(nk) is better than O(n) (former n is smaller than latter n...
  • Ans. 

    O(nk) is better than O(n) for large data and hash tables.

    • O(nk) is better because it takes into account the size of the data and the number of keys.

    • For large data and hash tables, the size of n will be large, making O(nk) more efficient.

    • O(n) assumes a constant number of keys, which may not be the case in practice.

    • Amazon may have chosen O(nk) for better scalability and performance.

  • Answered by AI
  • Q16. Tell me about your projects.
  • Ans. 

    I have worked on various projects including a web application for tracking fitness goals and a mobile app for managing personal finances.

    • Developed a web application using React and Node.js to track fitness goals and progress

    • Created a mobile app using Flutter to manage personal finances and budgeting

    • Collaborated with a team to implement features, fix bugs, and optimize performance

  • Answered by AI
  • Q17. If you don’t get selected for PayPal, what will you do?
  • Ans. 

    If not selected for PayPal, I will continue applying to other companies, improve my skills, and network with professionals in the industry.

    • Continue applying to other tech companies for similar roles

    • Work on improving technical skills through online courses or personal projects

    • Network with professionals in the industry through events or online platforms like LinkedIn

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: It was conducted in Hackerrank which consisted of 10 aptitude questions that included C, C++, Java MCQ

Skills evaluated in this interview

Top PayPal Software Engineer Level 1 Interview Questions and Answers

Q1. Input a file. Select first 3 lines of the file. Select the longest line and count the number of words in that line. It was easy. I used Java methods to solve the problem. I explained the logic and he accepted it.
View answer (1)

Software Engineer Level 1 Interview Questions asked at other Companies

Q1. Input a file. Select first 3 lines of the file. Select the longest line and count the number of words in that line. It was easy. I used Java methods to solve the problem. I explained the logic and he accepted it.
View answer (1)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I was interviewed in Jan 2025.

Round 1 - Coding Test 

One question related to object-oriented programming and one question related to data structures and algorithms.

Round 2 - Technical 

(1 Question)

  • Q1. DSA - 2 questions need to solve in 45 min with optimal solution one based on recursion and another is based on 2 pointers.
Round 3 - Technical 

(1 Question)

  • Q1. Can you describe the system design for the checkout feature on Amazon, including the request body, API calls, load balancing, database caching, and content delivery network (CDN) considerations?
  • Ans. 

    The system design for the checkout feature on Amazon involves request body, API calls, load balancing, database caching, and CDN considerations.

    • Request body includes user's selected items, shipping address, payment details, etc.

    • API calls are made to process payment, update inventory, and send confirmation emails.

    • Load balancing ensures even distribution of traffic across multiple servers to handle checkout requests effi...

  • Answered by AI
Round 4 - Behavioral 

(1 Question)

  • Q1. Questions regarding your resume, previous company project work, and behavioral topics.

Software Engineer2 Interview Questions asked at other Companies

Q1. - Given a water -tight orientable 2-manifold, how to find if a point is inside or outside its volume? - Given a bunch of points with their coordinates, how to merge closeby points together? - How to determine if the normals of the two trian... read more
View answer (1)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Oct 2024. There were 2 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Knn algorithm using python
  • Ans. 

    KNN algorithm is a simple and effective machine learning algorithm for classification and regression tasks.

    • KNN stands for K-Nearest Neighbors.

    • It is a non-parametric, lazy learning algorithm.

    • Works by finding the K closest training examples in feature space to a given input data point.

    • Classification: Assign the most common class among the K nearest neighbors.

    • Regression: Take the average of the K nearest neighbors' target...

  • Answered by AI
  • Q2. Some LC problem on suffix and prefix
Round 2 - One-on-one 

(2 Questions)

  • Q1. Case study on imbalanced dataset
  • Q2. Evaluation metrics

Skills evaluated in this interview

Senior Machine Learning Engineer Interview Questions asked at other Companies

Q1. Data formats in big Data, why each format.
View answer (1)
Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
-
Result
No response

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

Round 1 - Coding Test 

Data structures and algo. 2 ques were asked in hackerrank

Round 2 - One-on-one 

(1 Question)

  • Q1. Questions related to System design
Round 3 - One-on-one 

(1 Question)

  • Q1. Basic question related to Spring and Java

Senior Software Engineer Interview Questions asked at other Companies

Q1. K Largest Elements Problem Statement You are given an integer k and an array of integers that contain numbers in random order. Write a program to find the k largest numbers from the given array. You need to save them in an array and return ... read more
View answer (1)

PayPal interview questions for popular designations

 Software Engineer

 (24)

 Data Scientist

 (11)

 Software Developer

 (8)

 Senior Software Engineer

 (8)

 Risk Analyst

 (5)

 Data Analyst

 (5)

 Software Engineer2

 (5)

 SDE-2

 (4)

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

I applied via LinkedIn

Round 1 - Coding Test 

Question base on Tree data structures

Round 2 - Technical 

(2 Questions)

  • Q1. Explain GC collector in Java
  • Ans. 

    GC collector in Java is responsible for managing memory by reclaiming unused objects and freeing up memory space.

    • GC stands for Garbage Collector

    • Automatically manages memory by reclaiming unused objects

    • Prevents memory leaks and optimizes memory usage

    • Different types of GC algorithms like Serial, Parallel, CMS, G1

    • Example: System.gc() can be used to suggest garbage collection

  • Answered by AI
  • Q2. Dynamic programming algorithm question
Round 3 - Technical 

(1 Question)

  • Q1. Low level design for Car rental system
  • Ans. 

    Design a car rental system at a low level

    • Use object-oriented programming to model cars, customers, rentals, etc.

    • Implement a database to store information about available cars, customer bookings, etc.

    • Include features like booking, returning, and searching for cars

    • Consider implementing a pricing system based on factors like car type, duration of rental, etc.

  • Answered by AI
Round 4 - HR 

(1 Question)

  • Q1. Salary discussion

Skills evaluated in this interview

Software Engineer2 Interview Questions asked at other Companies

Q1. - Given a water -tight orientable 2-manifold, how to find if a point is inside or outside its volume? - Given a bunch of points with their coordinates, how to merge closeby points together? - How to determine if the normals of the two trian... read more
View answer (1)

Get interview-ready with Top PayPal Interview Questions

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

I applied via Recruitment Consulltant

Round 1 - Coding Test 

Ask about how to implement DQ

Jobs at PayPal

View all
Interview experience
3
Average
Difficulty level
Easy
Process Duration
4-6 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed in Oct 2024. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Introduction about yourself
  • Q2. Basic golang questions
Round 2 - Coding Test 

Coding questions on DSA

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well on Golang and they ask only on basic level proficiency. But interviewer is inpatient and unable to listen till we complete our topic.

Golang Developer Interview Questions asked at other Companies

Q1. can we return difference data type and how ,what architeture you worked in your project,does go have oops concepts
View answer (1)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Not Selected

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

Round 1 - One-on-one 

(2 Questions)

  • Q1. Basic Java related questions, OOPs concepts
  • Q2. Write code for encryption of the code
  • Ans. 

    Encryption of code involves converting plaintext into ciphertext to secure data.

    • Choose a strong encryption algorithm like AES or RSA

    • Generate a key for encryption

    • Encrypt the plaintext using the key and algorithm

    • Store or transmit the ciphertext securely

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

(2 Questions)

  • Q1. Java Related questions, also some system design-related questions
  • Q2. Show the abstraction and write code for function overriding
  • Ans. 

    Abstraction is hiding the implementation details, function overriding is providing a new implementation for a method in a subclass.

    • Abstraction involves hiding the complex implementation details and showing only the necessary features to the user.

    • Function overriding occurs in inheritance when a subclass provides a specific implementation for a method that is already defined in its superclass.

    • Example: Parent class 'Anima...

  • Answered by AI
Round 3 - Behavioral 

(1 Question)

  • Q1. Normal questions related to projects and work ethics

Skills evaluated in this interview

Top PayPal Software Engineer Interview Questions and Answers

Q1. Cycle Detection in a Singly Linked List Determine if a given singly linked list of integers forms a cycle or not. A cycle in a linked list occurs when a node's next points back to a previous node in the list. Thus, the list does not have a ... read more
View answer (1)

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (196)
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed in Nov 2024. There were 3 interview rounds.

Round 1 - Coding Test 

Coding test was on HackerRank

Round 2 - Technical 

(1 Question)

  • Q1. Easy-Medium DSA Questions
Round 3 - HR 

(1 Question)

  • Q1. Asked from my resume

Software Engineer Intern Trainee Interview Questions asked at other Companies

Q1. find average salary of employees from given table for each designation where employee age greater than 30
View answer (1)
Interview experience
4
Good
Difficulty level
Easy
Process Duration
2-4 weeks
Result
No response

I applied via Approached by Company and was interviewed in Aug 2024. There were 2 interview rounds.

Round 1 - Coding Test 

Javascript questions on Hacker rank with pair programming

Round 2 - Technical 

(2 Questions)

  • Q1. Adv javscript questions
  • Q2. React code writing in hacker rank
  • Ans. 

    The question involves writing React code in HackerRank.

    • Understand the requirements of the task before starting to write the code.

    • Use React components to create a user interface.

    • Handle state management and user interactions using React hooks.

    • Write clean and efficient code to solve the problem.

    • Test the code thoroughly before submitting.

  • Answered by AI

Staff Software Engineer Interview Questions asked at other Companies

Q1. How will you open a file whos size is double that of RAM on your system.?
View answer (1)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
-
Result
-

I was interviewed in Oct 2024.

Round 1 - Technical 

(2 Questions)

  • Q1. Design Rate Limiter LLD
  • Q2. What are SOLID Principles? Springboot questions

Interview Preparation Tips

Topics to prepare for PayPal Senior Software Engineer interview:
  • LLD

Senior Software Engineer Interview Questions asked at other Companies

Q1. K Largest Elements Problem Statement You are given an integer k and an array of integers that contain numbers in random order. Write a program to find the k largest numbers from the given array. You need to save them in an array and return ... read more
View answer (1)

PayPal Interview FAQs

How many rounds are there in PayPal interview?
PayPal interview process usually has 2-3 rounds. The most common rounds in the PayPal interview process are Technical, Coding Test and One-on-one Round.
How to prepare for PayPal 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 PayPal. The most common topics and skills that interviewers at PayPal expect are Financial Services, SQL, Python, Wellness and Analytics.
What are the top questions asked in PayPal interview?

Some of the top questions asked at the PayPal interview -

  1. Input a file. Select first 3 lines of the file. Select the longest line and cou...read more
  2. But amazon can do the search in O(n). Why it has to go for O(nk)? For data stru...read more
  3. When you search for a particular product in amazon, it displays some of the sea...read more
How long is the PayPal interview process?

The duration of PayPal interview process can vary, but typically it takes about less than 2 weeks to complete.

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PayPal Interview Process

based on 139 interviews

Interview experience

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PayPal Reviews and Ratings

based on 919 reviews

3.9/5

Rating in categories

3.5

Skill development

4.0

Work-life balance

4.0

Salary

3.1

Job security

3.9

Company culture

3.1

Promotions

3.5

Work satisfaction

Explore 919 Reviews and Ratings
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