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Visa Senior Software Engineer Interview Questions and Answers
12 Interview questions
Design an ecommerce website for online shopping
User-friendly interface for easy navigation
Secure payment gateway integration
Product categorization and search functionality
Customer reviews and ratings
Responsive design for mobile compatibility
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
U...
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
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 l...
What people are saying about Visa
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 eff...
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
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
Count the number of ways to reach target from source in a grid with 0s and 1s.
Use dynamic programming to solve the problem efficiently.
Traverse the grid using DFS or BFS to count the number of ways.
Consider edge cases like when source and target are the same or when there is no path.
Example: Given grid = [[0,0,0],[0,1,0],[0,0,0]], source = (0,0), target = (2,2), answer is 2.
Example: Given grid = [[0,1],[0,0]], sou...
Design a service to aggregate multiple sources of data/documentation centrally.
Identify sources of data/documentation
Determine data aggregation method
Design a centralized database to store aggregated data
Develop a user-friendly interface to access the data
Ensure data security and privacy
Tech stack for designing a scalable Uber-like service.
Use microservices architecture for scalability and fault tolerance.
Choose a cloud provider with auto-scaling capabilities.
Use a load balancer to distribute traffic across multiple instances.
Use a NoSQL database for high availability and scalability.
Use message queues for asynchronous communication between services.
Use containerization for easy deployment and ma...
Visa Senior Software Engineer Interview Experiences
14 interviews found
Ayushi Shah
(1 Question)
- Q1. Current company architecture and what was your role
Anonymous
I applied via LinkedIn and was interviewed in Jan 2024. There was 1 interview round.
(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
- 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 ...
- 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...
Interview Preparation Tips
- Arrays
- Trees
Skills evaluated in this interview
I applied via Referral and was interviewed in Jan 2024. There were 2 interview rounds.
Codility Test with leetcode medium questions
(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
- 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
- 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...
Interview Preparation Tips
- React
Skills evaluated in this interview
Sharoon Austin
(1 Question)
- Q1. Design an econmerce website
- Ans.
Design an ecommerce website for online shopping
User-friendly interface for easy navigation
Secure payment gateway integration
Product categorization and search functionality
Customer reviews and ratings
Responsive design for mobile compatibility
Skills evaluated in this interview
(1 Question)
- Q1. Easy question from leetcode.
(1 Question)
- Q1. Just normal questions based on resume and previous projects
Selected
I applied via LinkedIn and was interviewed before Oct 2023. There were 4 interview rounds.
Online assessment and coding test
(2 Questions)
- Q1. System Design related question to understand e2e picture of a working system in prod.
- Q2. DS-Algo based question not remember now, but easy one
(3 Questions)
- Q1. Prior project based System Design and questions around it
- Q2. Design a custom data structure based on requirement
- Ans.
Custom data structure for array of strings
Use a trie data structure to efficiently store and search for strings
Implement methods for adding, removing, and searching for strings in the trie
Consider optimizing the trie for memory usage and performance
- Q3. Internal working - of DB structures and indices etc
- Ans.
Understanding internal workings of DB structures and indices is crucial for optimizing database performance.
DB structures refer to how data is organized within a database, such as tables, columns, and relationships.
Indices are data structures that improve the speed of data retrieval operations by providing quick access to specific data values.
Understanding how indices work can help in optimizing query performance by re...
(2 Questions)
- Q1. Past Experience based questions
- Q2. Behavioral/Attitude observational Questions
Skills evaluated in this interview
I applied via Approached by Company and was interviewed in Jul 2022. There was 1 interview round.
(4 Questions)
- Q1. Given a grid containing 0s and 1s and source row and column, in how many ways, could we reach form source to target. ( 1's represents a blockade and 0's represent accessable points)
- Ans. Medium level Leetcode question ( Could be done by applying DFS and moving in 4 directions).
- Q2. 1. High Level System Design -> Design Uber like Service. Follow up -> What would be your tech stack for designing such a service to make sure it could scale when needed.
- Ans. Multiple Youtube Videos and Blogs out there that cover different aspects of such a system
- Q3. (HLD) -> Design a service which combines multiple sources of data/documentation and aggregates it such that all info is available centrally.
- Ans.
Design a service to aggregate multiple sources of data/documentation centrally.
Identify sources of data/documentation
Determine data aggregation method
Design a centralized database to store aggregated data
Develop a user-friendly interface to access the data
Ensure data security and privacy
- Q4. (Behavioral) Describe a scenario in which you went above and beyond your regular assigned tasks and responsibilities to help out the Team/Colleague/Organization.
- Ans.
I took on additional responsibilities to help a colleague with a tight deadline.
Assisted a colleague with a project that had a tight deadline
Took on additional tasks outside of my regular responsibilities
Worked extra hours to ensure the project was completed on time
Provided guidance and support to the colleague throughout the project
Interview Preparation Tips
Also, and this is very important -> I am not sure if this company has problem at the recruiter level or this is the general outlook of this company.... if at all you didn't perform well in any of the rounds... say final round or even managerial round. They won't tell you that they have decided to drop your profile or any such thing. A week after the final interview I contacted the recruiter who used to be readily available with all the info and feedbacks was least interested and told me she haven't heard back from the manager whether to drop my case or move forward.
It has been 3 weeks now and no info from them.
And this is not just my experience, many candidates complain about the same kind of behaviour from VISA on various other platforms
Skills evaluated in this interview
Selected
I applied via Company Website and was interviewed before Apr 2023. There were 3 interview rounds.
Two string related questions were there. One was to use stream api and another one was just to do perform operations on top of that.
(1 Question)
- Q1. It was technical, mostly related to your tech stack and some questions on technology your are applying for
(1 Question)
- Q1. Some basic techno managerial round. Mostly to check problem solving skills
Interview Preparation Tips
Selected
I applied via Recruitment Consulltant and was interviewed before Oct 2023. There was 1 interview round.
DSA round on graph . String questions were asked
I applied via LinkedIn and was interviewed in Sep 2022. There were 4 interview rounds.
Online assesment . 5 coding question in 90 minutes
Hackerrank coding test with paired screen. They give problem we have to write the logic
Again hacker rank code pair. the give problem and have to write logic. this round with staff senior engineer
Interview Preparation Tips
Visa Interview FAQs
Some of the top questions asked at the Visa Senior Software Engineer interview -
The duration of Visa Senior Software Engineer interview process can vary, but typically it takes about less than 2 weeks to complete.
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Visa Senior Software Engineer Reviews and Ratings
based on 58 reviews
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