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Rakuten Senior Software Engineer Interview Questions and Answers

Updated 16 Apr 2024

Rakuten Senior Software Engineer Interview Experiences

2 interviews found

Senior Software Engineer Interview Questions & Answers

user image Aayush Kumar Tiwari

posted on 16 Apr 2024

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

I applied via Approached by Company and was interviewed before Apr 2023. There were 4 interview rounds.

Round 1 - Coding Test 

1 Hour coding round on leetcode or hackerearth

Round 2 - Coding Test 

Coding round with Medium level questions

Round 3 - Technical 

(3 Questions)

  • Q1. Java related questions
  • Q2. Hashmap , treemap implementations
  • Q3. Loop in a linkedlist
  • Ans. 

    Loop in a linked list

    • Use Floyd's Cycle Detection Algorithm to detect a loop in a linked list

    • Maintain two pointers, one moving at double the speed of the other

    • If the two pointers meet at some point, there is a loop in the linked list

  • Answered by AI
Round 4 - Behavioral 

(1 Question)

  • Q1. Interview with manager where he discussed few use cases and data structures to be used

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Jun 2022. There was 1 interview round.

Round 1 - HR 

(1 Question)

  • Q1. Salary and Joining discussion

Interview Preparation Tips

Interview preparation tips for other job seekers - Informal HR. Wont release offer and if tomorrow is the joining day HR will call and tell will release the offer soon today. I rejected due to this informal HR

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Interview questions from similar companies

I applied via Naukri.com and was interviewed in Sep 2020. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. What is event loop?
  • Ans. 

    Event loop is a mechanism that allows non-blocking I/O operations in a single-threaded environment.

    • Event loop is used in programming languages like JavaScript and Python.

    • It manages the execution of multiple tasks by prioritizing them based on their priority level.

    • It continuously checks for new events and executes them in a loop.

    • It allows for efficient handling of I/O operations without blocking the main thread.

    • It is co...

  • Answered by AI
  • Q2. Difference between let var and const.
  • Ans. 

    let, var and const are used to declare variables in JavaScript with different scoping rules and mutability.

    • let and var are used to declare variables that can be reassigned later, but var has function scope while let has block scope.

    • const is used to declare variables that cannot be reassigned and have block scope.

    • Using const does not mean the value is immutable, only the variable reference is.

    • let and const were introduc...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - If going for Mean or Mern stack be very firm on JavaScript basics and ES6 concepts.

Skills evaluated in this interview

I applied via Recruitment Consulltant and was interviewed before Sep 2021. There were 3 interview rounds.

Round 1 - Coding Test 

This was a very easy test. It can be crackable easily.

Round 2 - Technical 

(2 Questions)

  • Q1. There is only 1 technical happened. Core java, angular, JUNIT
  • Ans. Basics of core java must, Angular if worked on it
  • Answered Anonymously
  • Q2. Junit test cases if worked previously.
  • Ans. 

    Junit test cases should always be re-run to ensure code quality and prevent regression.

    • Junit test cases should be run after every code change.

    • Test cases should cover all possible scenarios and edge cases.

    • Test cases should be automated to save time and ensure consistency.

    • Test cases should be reviewed and updated regularly.

    • Regression testing should be performed to ensure new changes do not break existing functionality.

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. Salary discussion, Why this company kind of question.

Interview Preparation Tips

Topics to prepare for CitiusTech Senior Software Engineer interview:
  • Core Java
  • Angular
  • JUnit
Interview preparation tips for other job seekers - Company is good in terms of policies, also there is option of onsite.

Skills evaluated in this interview

I applied via Recruitment Consultant and was interviewed in May 2021. There were 4 interview rounds.

Interview Questionnaire 

10 Questions

  • Q1. First-round was an online test on hacker rank. There were 4 questions related to the array, string, and tree.
  • Q2. Create an immutable class.
  • Ans. 

    An immutable class is a class whose instances cannot be modified after creation.

    • Make all fields private and final

    • Don't provide any setter methods

    • Ensure that any mutable objects passed to the constructor are defensively copied

    • Make the class final so that it cannot be subclassed

  • Answered by AI
  • Q3. Create a Singelton pattern.
  • Ans. 

    Singleton pattern ensures only one instance of a class is created and provides a global point of access to it.

    • Create a private constructor to prevent direct instantiation of the class.

    • Create a private static instance of the class.

    • Create a public static method to access the instance, and create the instance if it doesn't exist.

    • Ensure thread safety by using synchronized keyword or double-checked locking.

  • Answered by AI
  • Q4. Difference between Vector and ArrayList.
  • Ans. 

    Vector is synchronized and ArrayList is not. Vector is thread-safe and ArrayList is not.

    • Vector is a legacy class and ArrayList is a part of the Java Collection Framework.

    • Vector is synchronized which means only one thread can access it at a time, while ArrayList is not.

    • Vector is thread-safe which means it can be used in a multi-threaded environment, while ArrayList is not.

    • Vector is slower than ArrayList because of synch...

  • Answered by AI
  • Q5. Create Linked List without using the internal library and provide the functionality of add delete find.
  • Ans. 

    Create Linked List without using internal library and provide add, delete, find functionality.

    • Create a Node class with data and next pointer

    • Create a LinkedList class with head pointer and methods to add, delete, and find nodes

    • Use a loop to traverse the list and perform operations

    • Handle edge cases such as adding to an empty list or deleting the head node

  • Answered by AI
  • Q6. One question was related to binary search.
  • Q7. Few more questions related to java.
  • Q8. The architecture of the current system.
  • Ans. 

    The current system follows a microservices architecture.

    • The system is divided into multiple independent services.

    • Each service has its own database and communicates with other services through APIs.

    • The architecture allows for scalability and flexibility.

    • Examples of microservices used in the system include user authentication, payment processing, and inventory management.

  • Answered by AI
  • Q9. Find the total no of the island in a 2d matrix. Working code was required.
  • Ans. 

    Find the total no of islands in a 2D matrix.

    • Use DFS or BFS to traverse the matrix.

    • Mark visited cells to avoid repetition.

    • Count the number of islands found.

  • Answered by AI
  • Q10. Find loop in a linked list.
  • Ans. 

    Loop detection in a linked list.

    • Use two pointers, one moving at twice the speed of the other.

    • If there is a loop, the faster pointer will eventually catch up to the slower one.

    • If there is no loop, the faster pointer will reach the end of the list.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Before the interview brush up on the Linked list, Tree, and array. This is a common interview problem asked in Snapdeal.

Skills evaluated in this interview

Interview Questionnaire 

2 Questions

  • Q1. I interviewed for Qlikview Team, So most questions were regarding qlikview.
  • Q2. Some questions were regarding SQL also.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed in Dec 2022. There were 5 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 Resume tips
Round 2 - Technical 

(1 Question)

  • Q1. Based on core concepts of JavaScript and React fundamentals.
Round 3 - Technical 

(1 Question)

  • Q1. Advance topics of React and JavaScript and easy and medium level of DS algo
Round 4 - Technical 

(1 Question)

  • Q1. More like technical discussion on services that helps them to manage their product and problem solving if discussion not go long.
Round 5 - HR 

(1 Question)

  • Q1. Compensation and others formalities

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on core things and have in depth knowledge of your Techs
Round 1 - One-on-one 

(2 Questions)

  • Q1. Internal Working Of Hashmap, Java 8 features and two DSA questions one was based on the array and the second one was based on LinkedList. The first interview round was very excellent that's why they conduc...
  • Q2. Detect loop in a LinkedList,
  • Ans. 

    Detect loop in a LinkedList

    • Use two pointers, one moving at twice the speed of the other

    • If there is a loop, the faster pointer will eventually catch up to the slower one

    • If there is no loop, the faster pointer will reach the end of the list

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

(2 Questions)

  • Q1. System Design HLD and LLD round which was the final round.
  • Q2. HLD and LLD Designing round: Desing Architecture for ChatBot and Company Employee Data Management System.

Interview Preparation Tips

Interview preparation tips for other job seekers - Have Good Practice in DSA and System Desing, Basic and OOPS concept of any One Programming Language should be very clear

Skills evaluated in this interview

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

I applied via Recruitment Consulltant and was interviewed before Jun 2023. There were 2 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Basic js question closure, async defer and all
  • Q2. Create autosuggest debounce, pollyfill
  • Ans. 

    Autosuggest debounce is a feature that delays the search suggestions until the user stops typing, and a polyfill is a piece of code that provides functionality that is not natively supported by the browser.

    • Implement a debounce function to delay the autosuggest feature until the user stops typing.

    • Use a polyfill to provide support for the autosuggest feature in browsers that do not natively support it.

    • Example: Implement ...

  • Answered by AI
Round 2 - Technical 

(4 Questions)

  • Q1. A programming question
  • Q2. React-native architecture and flatlist
  • Q3. Kadanes algorithm
  • Ans. 

    Kadane's algorithm is used to find the maximum subarray sum in an array of integers.

    • Iterate through the array and keep track of the maximum sum ending at each index.

    • At each index, choose between extending the previous subarray or starting a new subarray.

    • Example: For array [-2, 1, -3, 4, -1, 2, 1, -5, 4], the maximum subarray sum is 6 (from index 3 to 6).

  • Answered by AI
  • Q4. Scalablity, performance

Interview Preparation Tips

Interview preparation tips for other job seekers - Advance js topics and programming questions, scalablity and performance optimization

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Android activity lifecycle
  • Q2. Android MVVM architecture
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Rakuten Interview FAQs

How many rounds are there in Rakuten Senior Software Engineer interview?
Rakuten interview process usually has 2-3 rounds. The most common rounds in the Rakuten interview process are Coding Test, HR and Technical.
How to prepare for Rakuten 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 Rakuten. The most common topics and skills that interviewers at Rakuten expect are GIT, Spring Boot, Agile, Computer science and JIRA.
What are the top questions asked in Rakuten Senior Software Engineer interview?

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

  1. loop in a linkedl...read more
  2. Interview with manager where he discussed few use cases and data structures to ...read more
  3. Hashmap , treemap implementati...read more

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Rakuten Senior Software Engineer Interview Process

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Interview experience

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