GlobalData Senior Software Engineer Interview Questions and Answers

They will ask some simple algorithmic questions.

Q1. Very friendly face to face interview simple questions will be asked base on your level of expertise
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Q1. Java basics, String, logic coding (for loop sand if conditions), arrays.
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Q2. AWS basics - VPC, Subnet, Step functions, ELB
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Q1. Trick questions, leading a team, working in a team related.
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Q2. Having a good and friendly attitude will help.
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Q1. Salary negotiation
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Mix of coding, aptitude, java, javascript

Q1. Resume based questions on project
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Q2. Basic SQL, Java streams questions
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Q1. Project related questions
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Q2. Internal working of hashmap
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.

• If multiple keys hash to the same index, a collision occurs and the pairs are stored in a linked list at that index.

• To...read more
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Q3. Design patterns I've used
Ans. 
I have used design patterns such as Singleton, Factory, and Observer in my projects.
• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Factory pattern creates objects without specifying the exact class of object that will be created.

• Observer pattern defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and
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Q4. Print whole Fibonacci series using recursion.
Ans. 
Print Fibonacci series using recursion
• Define a recursive function to calculate Fibonacci numbers

• Base case: return 0 if n is 0, return 1 if n is 1

• Recursive case: return sum of previous two Fibonacci numbers

• Print each Fibonacci number in the series
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Q5. Show my Github projects, and the interviewer didn't even properly looked into the code.
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Q1. Explain how you read messages from google cloud pusub
Ans. 
Reading messages from Google Cloud Pub/Sub involves creating a subscription and pulling messages from the subscription.
• Create a subscription to a Google Cloud Pub/Sub topic

• Use the subscription to pull messages from the topic

• Process the messages received from the subscription
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Aptitude test will a hackerrank test where it might have technical MCQ and/or coding test.

Q1. Interviewer will test your logic building capability with puzzel/coding and technical questions and experience discussion.
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Q1. Its a normal discussion with HR about CTC and all.
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Q1. Monolithic and microservice architecture difference and how will you migrate.
Ans. 
Monolithic architecture is a single large application while microservice architecture is a collection of small, independent services.
• Monolithic architecture is a single, tightly coupled application where all components are interconnected.

• Microservice architecture breaks down the application into smaller, loosely coupled services that communicate through APIs.

• Migrating from monolithic to microservices involves breaking ...read more
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Q1. Managerial round few technical questions followed by team building and leadership related questions asked.
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Q1. Basic leadership related questions and few questions on why job change etc
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