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WSFx Global Pay Flutter Developer Interview Questions and Answers

Updated 11 Sep 2023

WSFx Global Pay Flutter Developer Interview Experiences

1 interview found

Interview experience
3
Average
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Aug 2023. There were 2 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 tips
Round 2 - One-on-one 

(2 Questions)

  • Q1. Basic flutter questions
  • Q2. Intermediate questions

Interview questions from similar companies

I appeared for an interview in Dec 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 60 minutes
Round difficulty - Medium

test timing: 7-8 pm
2 programming questions
webcam proctored

  • Q1. 

    Minimum Cost to Reach End Problem

    You are provided with an array ARR of integers of size 'N' and an integer 'K'. The goal is to move from the starting index to the end of the array with the minimum possib...

  • Ans. 

    Find minimum cost to reach end of array by jumping with constraints

    • Use dynamic programming to keep track of minimum cost at each index

    • Iterate through the array and update the minimum cost based on reachable indices within K steps

    • Calculate cost to jump from current index to reachable indices and update minimum cost accordingly

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in BangaloreEligibility criteria7 CGPA and above, no dead backlogsVisa interview preparation:Topics to prepare for the interview - Data Structures, Dynamic Programming, OOPS, Computer Architecture, Algorithms, Bit Manipulation, Operating System, Computer Networking, Cloud conceptsTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Ability to apply data structures in questions(practice graph and Tree questions)
Tip 2 : Thorough knowledge of the projects done
Tip 3 : Good knowledge about computer science concepts

Application resume tips for other job seekers

Tip 1 : Mention projects that you have done yourself and are thorough with 
Tip 2 : mention soft skills

Final outcome of the interviewRejected

Skills evaluated in this interview

I appeared for an interview before Sep 2020.

Round 1 - Coding Test 

(2 Questions)

Round duration - 90 Minutes
Round difficulty - Medium

The test was organized online on Amcat and there were 3 coding problems. There were no MCQs in this round.

  • Q1. 

    Ninja Technique Problem Statement

    Implement a function that determines whether a given numeric string contains any substring whose integer value equals the product of two consecutive integers. The functio...

  • Ans. 

    Implement a function to determine if a numeric string contains a substring whose value equals the product of two consecutive integers.

    • Iterate through all substrings of the input string and check if their integer value equals the product of two consecutive integers.

    • Use nested loops to generate all possible substrings efficiently.

    • Check if the product of two consecutive integers matches the integer value of the substring.

    • ...

  • Answered by AI
  • Q2. 

    Find Nodes at a Specific Distance from Target in a Binary Tree

    Given a binary tree, a target node within this tree, and an integer K, identify and return all nodes that are exactly K edges away from the t...

  • Ans. 

    Find nodes at a specific distance from a target node in a binary tree.

    • Traverse the binary tree to find the target node.

    • Perform a depth-first search to identify nodes at distance K from the target node.

    • Return the values of nodes found at distance K in an array.

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 50 Minutes
Round difficulty - Medium

This round was scheduled by the college Training and Placement team virtually. The interviewer asked me questions pertaining mainly to DSA and we discussed my projects.

  • Q1. 

    Segregate Even and Odd Nodes in a Linked List

    You are given the head node of a singly linked list head. Your task is to modify the linked list so that all the even-valued nodes appear before all the odd-v...

  • Ans. 

    Reorder a singly linked list so that all even-valued nodes appear before odd-valued nodes while preserving the original order.

    • Create two separate linked lists for even and odd nodes

    • Traverse the original list and move nodes to respective even or odd lists

    • Merge the even and odd lists while maintaining the original order

  • Answered by AI
Round 3 - Video Call 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Easy

Again, the round was virtual. This was a Tech + Managerial round organized by the college T & P cell. The interviewer asked questions related to fundamental subjects such as Operating Systems, Object-oriented programming, and DBMS. There was one coding round at the end.

  • Q1. 

    Diagonal Traversal of a Binary Tree

    Given a binary tree of integers, find its diagonal traversal. Refer to the example for clarification on diagonal traversal.

    Example:

    Explanation:
    Consider lines at a...
  • Ans. 

    Diagonal traversal of a binary tree involves printing nodes at 135 degree angle in between lines.

    • Traverse the tree in a diagonal manner, starting from the root node.

    • Maintain a map to store nodes at each diagonal level.

    • Print the nodes at each diagonal level in the order of traversal.

  • Answered by AI
Round 4 - HR 

Round duration - 40 Minutes
Round difficulty - Easy

The round was virtual and was organized by the T & P cell of the college. The interviewer asked some behavioural and situation-based questions. There was one puzzle at the end.

Interview Preparation Tips

Professional and academic backgroundI applied for the job as Software Engineer in NoidaEligibility criteriaAbove 7 CGPAPaytm (One97 Communications Limited) interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, Web Development, Operating Systems, Object-oriented Programming, PuzzlesTime required to prepare for the interview - 3 MonthsInterview preparation tips for other job seekers

Tip 1 : For a product-based company, the first important thing is to solve as many DSA problems as possible. I solved problems mainly on GeeksforGeeks, LeetCode, and Coding Ninjas.
Tip 2 : Prepare 2-3 good projects based on your technical skillset. Prepare it very well as there is a high chance that projects would be discussed in the interview.
Tip 3 : Prepare fundamental college subjects like Operating systems, Object-oriented Programming, Database Management.

Application resume tips for other job seekers

Tip 1 : Keep it short and concise
Tip 2 : Describe your projects very specifically

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Naukri.com and was interviewed before Jun 2021. There were 2 interview rounds.

Round 1 - Coding Test 

Hacker rank long coding questions with questions for python,c++,javascript , data bast related questions

Round 2 - Technical 

(1 Question)

  • Q1. Javascript related some coding questions and some data base related

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well.good luck for your journey, prepare coding

I appeared for an interview in Jun 2017.

Interview Questionnaire 

11 Questions

  • Q1. How does ajax call work
  • Ans. 

    Ajax calls allow for asynchronous communication between client and server without reloading the page.

    • Ajax stands for Asynchronous JavaScript and XML

    • Uses XMLHttpRequest object to send and receive data

    • Allows for partial page updates without reloading the entire page

    • Can handle data in various formats such as JSON, XML, HTML, and plain text

    • Example: $.ajax({url: 'example.com', success: function(data){console.log(data)}});

  • Answered by AI
  • Q2. Difference between REST and SOAP
  • Ans. 

    REST is lightweight and uses HTTP while SOAP is XML-based and has more features.

    • REST uses HTTP methods like GET, POST, PUT, DELETE while SOAP uses XML messaging.

    • REST is stateless while SOAP can maintain state.

    • REST is faster and easier to use while SOAP is more secure and reliable.

    • REST is used for web services while SOAP is used for enterprise-level services.

    • Example of REST: Twitter API. Example of SOAP: Amazon Web Serv

  • Answered by AI
  • Q3. What is GET and POST
  • Ans. 

    GET and POST are HTTP methods used for sending data to a server.

    • GET is used to retrieve data from a server

    • POST is used to submit data to a server

    • GET requests can be cached and bookmarked

    • POST requests are not cached and cannot be bookmarked

    • GET requests have length restrictions

    • POST requests have no length restrictions

    • GET requests are less secure than POST requests

  • Answered by AI
  • Q4. What is observer pattern
  • Ans. 

    Observer pattern is a design pattern in which an object maintains a list of its dependents and notifies them automatically of any state changes.

    • Also known as publish-subscribe pattern

    • Used in event-driven systems

    • Allows loose coupling between objects

    • Example: A weather station broadcasts weather updates to multiple displays

    • Example: A stock market ticker notifies multiple investors of stock price changes

  • Answered by AI
  • Q5. What is singleton
  • Ans. 

    Singleton is a design pattern that restricts the instantiation of a class to a single object.

    • Singleton ensures that only one instance of a class exists in the entire application.

    • It provides a global point of access to the instance.

    • Commonly used in scenarios where a single instance needs to coordinate actions across the system.

    • Example: Database connection manager, logger, configuration manager.

  • Answered by AI
  • Q6. What is immutable in java
  • Ans. 

    Immutable in Java refers to objects whose state cannot be changed after creation.

    • String, Integer, and other wrapper classes are immutable in Java.

    • Immutable objects are thread-safe and can be shared without synchronization.

    • To create an immutable class, make all fields final and private, and don't provide setters.

    • Examples of immutable classes in Java include LocalDate, LocalTime, and LocalDateTime.

  • Answered by AI
  • Q7. How do you create immutable in java
  • Ans. 

    Creating immutable in Java

    • Use final keyword to make variables immutable

    • Use private constructor to prevent object modification

    • Use defensive copying to prevent modification of mutable objects

    • Use enum to create immutable objects

    • Use String class to create immutable strings

  • Answered by AI
  • Q8. Where have you used immutable in java
  • Q9. What is dependency injection
  • Ans. 

    Dependency injection is a design pattern that allows objects to receive dependencies rather than creating them internally.

    • It helps to decouple the code and makes it more testable and maintainable.

    • It allows for easier swapping of dependencies without changing the code.

    • There are three types of dependency injection: constructor injection, setter injection, and interface injection.

    • Example: Instead of creating a database co...

  • Answered by AI
  • Q10. What is CORS
  • Ans. 

    CORS stands for Cross-Origin Resource Sharing. It is a security feature implemented in web browsers to restrict access to resources from different origins.

    • CORS allows web servers to specify which origins are allowed to access its resources

    • It is implemented using HTTP headers

    • CORS prevents malicious websites from accessing sensitive data from other websites

    • Examples of resources that may be restricted by CORS include cook

  • Answered by AI
  • Q11. How do you overcome CORS
  • Ans. 

    CORS can be overcome by configuring the server to allow cross-origin requests.

    • Configure the server to include the Access-Control-Allow-Origin header

    • Use JSONP (JSON with Padding) to bypass CORS restrictions

    • Use a proxy server to make the request on behalf of the client

    • Use a browser extension to disable CORS restrictions during development

    • Use a server-side proxy to forward requests to the target server

  • Answered by AI

Interview Preparation Tips

Skills: Java Programming

Skills evaluated in this interview

I appeared for an interview in Dec 2017.

Interview Questionnaire 

3 Questions

  • Q1. You need to find the maximum water pond formed in bw the building
  • Ans. 

    To find the maximum water pond formed between buildings.

    • Identify the lowest point between the buildings.

    • Calculate the area of the pond using the distance between the buildings and the depth of the pond.

    • Consider any obstacles or uneven ground that may affect the pond's shape.

    • Use a surveying tool or satellite imagery to get accurate measurements.

    • Take into account any drainage systems or natural water flow that may affect

  • Answered by AI
  • Q2. On mars you have to place n robots and they are connected via GPS. now you need to move each robot such that the whole mars is visited and each robot visit the minimum area(meaning no overlapping of area)...
  • Q3. Design dictionary using trie....having operations of inserting a word, updating and deleting (needed to write full running code)
  • Ans. 

    Design a dictionary using trie with insert, update and delete operations.

    • Implement a Trie data structure with nodes containing a character and a boolean flag to indicate end of word

    • For insert operation, traverse the trie and add nodes for each character in the word

    • For update operation, delete the existing word and insert the updated word

    • For delete operation, mark the end of word flag as false and delete the node if it ...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Simple questions
Duration: 1 hour 10 minutes
Total Questions: 3

College Name: IIT Guwahati

Skills evaluated in this interview

I applied via Campus Placement and was interviewed in Sep 2016. There were 4 interview rounds.

Interview Questionnaire 

7 Questions

  • Q1. Tell me about yourself
  • Ans. 

    I am a passionate software developer with experience in Java, Python, and web development.

    • Experienced in Java, Python, and web development technologies

    • Strong problem-solving skills

    • Team player with excellent communication skills

  • Answered by AI
  • Q2. Explain your resume
  • Ans. 

    My resume highlights my experience in software development and showcases my skills in various programming languages and technologies.

    • Worked on multiple projects using Java, Python, and C++

    • Developed web applications using HTML, CSS, and JavaScript

    • Experience with databases such as MySQL and MongoDB

    • Familiarity with Agile methodology and version control systems like Git

    • Participated in hackathons and coding competitions

  • Answered by AI
  • Q3. Questions on projects mentioned
  • Q4. Why do you want to go for VISA?
  • Ans. 

    I want to go for VISA to explore new opportunities and gain international experience.

    • To gain exposure to different cultures and work environments

    • To expand my skill set and learn new technologies

    • To work on challenging projects and contribute to the growth of the company

    • To build a global network of professionals and enhance my career prospects

  • Answered by AI
  • Q5. Code a basic binary tree
  • Ans. 

    A binary tree is a data structure in which each node has at most two children.

    • Start with a root node

    • Each node has a left and right child

    • Nodes can be added or removed

    • Traversal can be done in-order, pre-order, or post-order

  • Answered by AI
  • Q6. Code a basic linked list
  • Ans. 

    Code a basic linked list

    • Create a Node class with data and next pointer

    • Create a LinkedList class with head pointer

    • Implement methods to add, delete, and search nodes in the linked list

  • Answered by AI
  • Q7. Code a circular linked list
  • Ans. 

    A circular linked list is a data structure where the last node points back to the first node, forming a loop.

    • Create a Node class with data and next pointer

    • Initialize the head node and set its next pointer to itself

    • To add a node, create a new node and set its next pointer to the head node's next pointer, then update the head node's next pointer to the new node

    • To traverse the circular linked list, start from the head nod...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: It was a programming test hosted on hackerrank. A total of 3 questions. I could solve only one of them. That too only a few test cases. Still got shortlisted for the next round. :)
Tips: Do practice a few challenges on programming platforms. Brush up your programming knowledge.
Total Questions: 3

Round: Technical Interview
Experience: It was an HR cum Technical round for me as I came from a non CS background. I was able to convince them I am a perfect fit for VISA
Tips: Do prepare your resume well. If you have coding projects, make sure you are clear with whatever you write. They might quiz you hard on them. Strong knowledge on Data structures and Algorithms will give you an edge.

Skills: Presentation Of Facts In Resume, Basic Coding, Communication, Algorithms And Data Structures
Duration: 2
College Name: IIT Madras
Funny Moments: I am a part of the sponsorship team of our technical and VISA was an associate sponsor for the same the previous year. Hence I had specified this fact in my interview. :P

Skills evaluated in this interview

I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.

Interview Questionnaire 

7 Questions

  • Q1. Given an array, Implement Binary search tree
  • Ans. 

    Implement Binary Search Tree using given array of strings.

    • Sort the array in ascending order

    • Find the middle element and make it the root of the tree

    • Recursively create left and right subtrees using the left and right halves of the array

    • Repeat until all elements are added to the tree

  • Answered by AI
  • Q2. Given the above Binary search tree, print in ascending order
  • Ans. 

    Print the given Binary search tree in ascending order

    • Traverse the left subtree recursively

    • Print the root node

    • Traverse the right subtree recursively

  • Answered by AI
  • Q3. Given an array of stock prices, find where to buy and where to sell for maximum profit in O(n)
  • Ans. 

    Find buy and sell points for maximum profit in an array of stock prices in O(n)

    • Iterate through the array and keep track of the minimum price seen so far

    • Calculate the profit at each index by subtracting the minimum price from the current price

    • Update the maximum profit and buy/sell points accordingly

    • Return the buy and sell points for maximum profit

  • Answered by AI
  • Q4. Resume based
  • Q5. What are three problems Chennai faces?
  • Ans. 

    Chennai faces problems related to water scarcity, traffic congestion, and pollution.

    • Water scarcity due to inadequate rainfall and poor management of water resources.

    • Traffic congestion due to the increasing number of vehicles and poor road infrastructure.

    • Pollution caused by industries, vehicular emissions, and improper waste disposal.

  • Answered by AI
  • Q6. Which one would you solve and how and why?
  • Ans. 

    Need more context on the question to provide an answer.

    • Please provide more information on the problem to be solved.

    • Without context, it is difficult to provide a solution.

    • Can you please provide more details on the problem statement?

  • Answered by AI
  • Q7. What is most interesting thing about Visa?
  • Ans. 

    Visa is a global payments technology company that connects consumers, businesses, banks and governments in more than 200 countries and territories.

    • Visa operates the world's largest retail electronic payments network.

    • VisaNet, the company's global processing system, handles more than 65,000 transaction messages a second.

    • Visa is constantly innovating to improve payment security and convenience, with initiatives such as Vi...

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: 4 Coding questions on Hackerrank platform, one and half hour time. I am not going to reveal the questions here, but one was a basic binary tree implementation and the other three were algorithmic and mathematical problems. They were kinda hard to solve in an hour and half. I could do only 1 and half of the other one. I got 115/300 points on that. I was one of the 16 people selected for the interview.
Tips: It all depends on how well you can focus on the test day. Just practice a lot on hackerrank.
Duration: 1 hour 30 minutes
Total Questions: 4

Round: Technical Interview
Experience: The first two questions I was able to do fast enough. I was also asked a few questions on my resume and coding-related internship. The last one, I showed an O(n*n) algorithm first and then modified it to O(n). Around 45 minutes.
Tips: Be thorough on the coding part in your resume. Think out aloud!

Round: Technical + HR Interview
Experience: Just a few normal questions regarding my projects and my favorite course and it's application to Visa. 15 minutes.
Tips: Once again, be thorough on your resume.

Round: HR Interview
Experience: Once again a normal round, just random questions as to whether I am interested and good enough in communication. 15 minutes.
Tips: Don't get shaken. Be ready for all kinds of questions. Especially about Visa relation to what you do

Skills: Smart Coding
College Name: IIT Madras

Skills evaluated in this interview

Interview Questionnaire 

1 Question

  • Q1. Tell me about your project ( written in language)?
  • Ans. 

    Developed a web application using Python and Django framework for managing inventory and sales.

    • Used Python programming language for backend development

    • Implemented Django framework for building web application

    • Designed database schema for inventory and sales data

    • Integrated frontend using HTML, CSS, and JavaScript

    • Implemented user authentication and authorization features

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: They asked 3 question on data structures .
1.Merging linekd list
2 and 3 BST related
Duration: 1 hour
Total Questions: 3

Round: Technical Interview
Experience: Interviewer asked me to explain projects which I had mentioned in Resume. Then He asked me to implement a problem on basis of my project.
It was telephonic round.
CGPA and my project mattered.

College Name: IIT Roorkee

Interview Questionnaire 

2 Questions

  • Q1. Why would you like to join Visa and why?
  • Q2. Tell me about yourself

Interview Preparation Tips

Round: Test
Experience: Coding Questions were fairly standard ones.
Duration: 75 minutes
Total Questions: 42

Round: Interview
Experience: Networks based questions, firewalls, TCP/IP and other OSI layers

Round: Interview
Experience: Coding questions. Asked to code on paper. Questions on Object Oriented Design.

Skills: Networks basics, OOPs basics, Coding Skills
College Name: IIT Guwahati
Motivation: Profiles offered, Package, Location

WSFx Global Pay Interview FAQs

How many rounds are there in WSFx Global Pay Flutter Developer interview?
WSFx Global Pay interview process usually has 2 rounds. The most common rounds in the WSFx Global Pay interview process are Resume Shortlist and One-on-one Round.
How to prepare for WSFx Global Pay Flutter Developer 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 WSFx Global Pay. The most common topics and skills that interviewers at WSFx Global Pay expect are Flutter, Java, Javascript, Microservices and Spring Boot.
What are the top questions asked in WSFx Global Pay Flutter Developer interview?

Some of the top questions asked at the WSFx Global Pay Flutter Developer interview -

  1. Basic flutter questi...read more
  2. Intermediate questi...read more

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WSFx Global Pay Flutter Developer Interview Process

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