Visa Technical Program Manager Interview Questions and Answers for Experienced

Q1. 1. Brief your existing/last Project architecture ? 2. Design patterns used in microservice architecture ?(Since my last project was microservices) 3. What is saga pattern? 4. 2 Scenario based question - Da...read more
Ans. 
Answering questions related to microservice architecture, design patterns, Kafka cluster data loss prevention, and monitoring/recovery in Appdynamics.
• My last project architecture was based on microservices, utilizing design patterns such as Circuit Breaker, Service Registry, and API Gateway.

• Saga pattern is used in microservices to manage distributed transactions across multiple services.

• In the event of data loss in a K...read more
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Q1. Few more question on Architecture of application and failover scenarios How will you resolve conflict within team members ? How will you deal with the attitude of (if)any developer in the team ? Where do...read more
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Q1. Describe an end to end project cycle
Ans. 
An end to end project cycle involves planning, execution, monitoring, and closing of a project.
• Initiation: Define project scope, objectives, and deliverables.

• Planning: Create a detailed project plan, schedule, and budget.

• Execution: Implement the project plan and manage resources.

• Monitoring: Track progress, identify risks, and make necessary adjustments.

• Closing: Finalize project deliverables, obtain client approval, and
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Q2. Tools and tech stack used
Ans. 
Various tools and technologies used in the tech stack for project management.
• Jira for project tracking

• Confluence for documentation

• Slack for communication

• GitHub for version control

• AWS for cloud services
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Q1. Pl sql Unix api configuration
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Q2. Routing how to use proxy
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Routing through a proxy involves configuring the proxy server to forward requests to the destination server.
• Configure the proxy server to listen for incoming requests

• Configure the proxy server to forward requests to the destination server

• Configure the client to use the proxy server for outgoing requests

• Use a proxy server to bypass network restrictions or improve performance

• Examples: Nginx, Apache, Squid
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Round duration - 60 minutes
Round difficulty - Easy

I couldn't find an optimal approach to the first question, so she skipped that question and proceeded to next questions. Remaining questions I have answered satisfactorily.

Q1. 
Subset Sum Equal To K Problem Statement
Given an array/list of positive integers and an integer K, determine if there exists a subset whose sum equals K.
Provide true if such a subset exists, otherwise r...read more
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Given an array of positive integers and an integer K, determine if there exists a subset whose sum equals K.
• Use dynamic programming to solve this problem efficiently

• Create a 2D array to store if a subset with a particular sum exists

• Iterate through the array and update the 2D array accordingly

• Check if the value at the end of the iteration is true for the given K
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Q2. 
BFS Traversal in a Graph
Given an undirected and disconnected graph G(V, E) where V vertices are numbered from 0 to V-1, and E represents edges, your task is to output the BFS traversal starting from the ...read more
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BFS traversal in a disconnected graph starting from vertex 0.
• Implement BFS algorithm to traverse the graph starting from vertex 0.

• Use a queue to keep track of visited nodes and their neighbors.

• Ensure to print the traversal sequence in the correct order.

• Handle disconnected components by checking for unvisited nodes.

• Follow the BFS approach of exploring neighbors before moving to the next level.
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Round duration - 60 minutes
Round difficulty - Easy

I told that my strength is problem solving and I can always find a way when there is a bottle-neck. Gave some examples of my experiences while doing my assignments.

Q1. 
Replace Spaces in a String
Given a string STR consisting of words separated by spaces, your task is to replace all spaces between words with the characters "@40".
Input:
The first line contains an integ...read more
Ans. 
Replace spaces in a string with '@40'.
• Iterate through each character in the string

• Replace spaces with '@40'

• Return the modified string
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