Kotak Interview Experience
Current Position: SDE-1
Current Experience: 3 years
Current Company: Product based

Round 1: Conducted by external party[Bar Raiser]: (1.5h)

[DSA,LLD,HLD] 30 Mins each

1. DSA

   1. Best Time to Buy and Sell Stock [Leetcode 121]
   2. Two Sum [Leetcode 1]

2. LLD

   1. Design the backend components for an online marketplace where users can buy and sell products. Consider features such as user authentication, product listing, search functionality, shopping cart, and order management.

3. HLD

   1. How would you design a distributed backend system that can handle large-scale data processing or analytics?
   2. Can you discuss the considerations and best practices for deploying and scaling a distributed backend system in a cloud environment?

Round 2: Problem solving[DSA]: (1h)

• Longest Increasing Path in a Matrix [Leetcode 329]
• Some questions on Exception handling,Scalability & DB replication

Round 3 (System Design - HLD+LLD): (1 h)

• Design a Fund Transfer System

Round 4 (System Design/Managerial - HM-1): (1 h)

• Current Project System Design (HLD)
• Design a User ID assigning System

Round 5 (System Design/Managerial - HM-2): (1 h)

• Current Project System Design (HLD)
• Design Credit card payment System

Result : Rejected [Interviewers expected stronger deep dives into System Design topics.]