Role - Java Backend developer
Experience - 3 years 9 months
Location - Remote

Round 1 - AI Interview

• How is dependency injection achieved and what are its advantages?
• Difference between abstract class and interface. In what case will you use interface?
• How does Java achieve garbage collection and what will happen if it is not done?
• How do you manage exceptions in spring boot APIs?
• How will you make your system resilient and fault tolerant?
• Difference between component service and repository
• What is the advantage of spring boot over traditional spring framework?
• Discuss the database schema for an e-commerce system. How will you maintain data consistency and integrity in your design?
• Difference between left join and inner join with example
• How will you optimize a slow running MySQL query?
• How to deploy microservices on AWS and how will you make it secured?
• What is the advantage of microservices over monolith and when should monolith be preferred?
• How do you manage communication between microservices? How will you monitor and trace requests across multiple microservices?
• What is list comprehension in python?
• Discuss an instance where Python can be preferred over Java for backend development.
• How does Python handle garbage collection?
• Difference between .json() and .loads()

Round 2 -

• Project discussion and follow-up questions
• Explain inner and left join
• Write the output of a given SQL query based on joins
• Write a query to list the rows present in 1st table but not in 2nd table without using any nested query
• Discuss about the annotations - Component, Service, Repository
• Which design patterns have you used in your projects
• What is Executor Service?
• Explain the internal working of HashMap
• How will you debug and optimize a slow running query
• Why doesn't java have multiple inheritance.

Verdict - Negative (as I could write SQL query in a nested manner only)

Overall - Rejected as each round was eliminatory