I applied through an employee referral and received an email from HR on the same day. The first round was telephonic, covering standard Java questions and data structure knowledge.

After that, I was invited to an onsite interview. There were four back-to-back rounds with different engineers, and the last one was with the manager. The entire process lasted for four hours.

The interview tested all concepts, including:

• Whiteboard coding of various algorithms and data structures
• Database queries and internals
• System Design and implementation
• Scenario-based questions
• Design patterns

Binary Tree Dynamic programming Recursion Design patterns