Role - Java Backend Developer
Experience - 3 years 10 months
Location - Bangalore

Round 1 - DSA Round

• https://leetcode.com/problems/group-anagrams/
• https://leetcode.com/problems/longest-substring-without-repeating-characters/
  Verdict - Strong Positive

Round 2 - Design Round

• Project discussion
• Full working code of LRU Cache implementation - each operation should have O(1) time complexity
• Modify the code to add generics as the data type of key-value pairs.
  Verdict - Strong Positive

Round 3 - Managerial Round (F2F)

• Project discussion, follow up questions
• In-depth questions related to each and every skill mentioned in resume.
• What approach can you think of to auto-scale your current project?
• Write a regex expression to match user data from sample logging data
• Write a sample code using spring boot annotations to connect Java program to database
• Questions related to JDBC driver
• Write sample Java code using strategy design pattern to connect Java program to either Oracle or SQL database, based on input. Also design the APIs for the same.
• What is optimistic and pessimistic locking, microservices, dirty write, dependency injection?
• Write sample java code to call a method present in 2nd class from the 1st class
• What is kafka and pub-sub model?
• How is partitioning done in kafka and how can we scale up our project in Kafka?

Verdict - Negative as I couldn't answer 1-2 questions.

Overall - Rejected due to negative feedback in the last round.