Global Payments Senior Site Reliability Engineer Interview Questions and Answers

They asked me about a coding problem related to string parsing. It was to formate the string with brackets. I completed both parts of the solution, and asked relevant questions, but got a rejection mail.

Q1. Comparison between REST and SOAP
Ans. 
REST is lightweight and flexible, while SOAP is more structured and standardized.
• REST uses HTTP methods for communication, while SOAP uses XML messaging.

• REST is better suited for mobile and web applications, while SOAP is better for enterprise-level applications.

• REST is stateless, while SOAP can maintain state between requests.

• REST is easier to implement and understand, while SOAP has a steep learning curve.

• REST is mor
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Q2. Java Fibonnaci series using recursion, questions on complexity
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Hacker rank test - 2 medium questions

Q1. Create and implement product management system with APIs and test case
Ans. 
Design and implement a product management system with APIs and test cases
• Create a database schema to store product information

• Develop RESTful APIs for CRUD operations on products

• Implement authentication and authorization for API access

• Write unit tests and integration tests for APIs

• Use tools like Postman for API testing
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Q1. Low level design - parking lot
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Q1. High level design - streaming platform
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Q1. Basic questions on past experiences, projects and scenario based questions on how will you handle this and that
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Two sum related problem and advanced Priority Queue related questions

Q1. LLD and class diagram for Minesweeper game
Ans. 
LLD and class diagram for Minesweeper game
• Create classes for Board, Cell, Game, Player

• Use composition to represent relationships between classes

• Implement methods for revealing cells, flagging cells, checking for game over

• Consider using enums for cell states (covered, uncovered, flagged)

• Use UML notation to draw class diagram
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Javascript Internals

React Fundamentals, Machine coding

Q1. Why do u want to work with us, Behavioral questions
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Q1. Performance tuning
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Q2. Advance sql queries
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Q3. Subqueries in oracle
Ans. 
Subqueries in Oracle are queries nested within another query to retrieve data from multiple tables.
• Subqueries can be used in SELECT, INSERT, UPDATE, and DELETE statements.

• Subqueries can return a single value, a single row, multiple rows, or a table.

• Subqueries can be correlated or non-correlated, depending on whether they reference columns from the outer query.

• Example: SELECT * FROM employees WHERE department_id = (SELE...read more
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Q1. Reason for change
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Q2. Situational questions
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Hackerrank questions

Q1. Coding through screen sharing
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Q1. Discussion on previous projects
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Q1. Behavioural analysis
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Q1. Behavioural questions and discussions
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Q1. Design Rate Limiter LLD
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Q2. What are SOLID Principles? Springboot questions
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