Mahindra Logistics Interview Experience | Rejected

Hi LeetCoders,

This is my interview experience post with the Mahindra Logistics, got rejected!

Company: Mahindra Logistics Location: Gurgaon Role: SDE - Java

How did I get the opportunity? HR approached me directly, via a phone call!

Round 1: DSA Round Interviewer: One year experienced SDE I

Asked two LeetCode medium questions, solved both of them.

1. Lowest Common Ancestor of a Binary Tree
2. Maximum Value at a Given Index in a Bounded Array

Round 2: High Level Design Interviewer: Engineering Manager

Asked some questions related to my work experience and skills, and a few questions on the working of Kafka. Thereafter, asked to design a notification system supporting multiple channels and scaling upto 1M QPS.

Designed a good notification system, supporitng multiple channels using message queue, load balancers etc.

Round 3: High Level Design Interviewer: Head of Engineering

Asked some questions related to my work experience, and a few questions on the architecture of Kafka. Thereafter, asked to design a ride booking platform like Uber which I failed to design properly.

I started with the very basic features thinking that I will make the design evolve to a Uber scale platform (Top-Down Approach). But the interviewer kept forcing for a complete data or DB design (or ER diagram) first (Bottom-Up Approach).

Round 3 wasn't a good interview, not bad even. Got to know that some interviewers prefer bottom-up approach as it helps them judge a candidate in the very first minutes of the interview. Bottom-up is not for begineers, as it requires lots of system and domain knowledge before-hand.

Although I am not looking for a switch, got some interview experience.

Good luck for your upcoming interviews!