Round 1 :

1. https://leetcode.com/problems/merge-intervals/
2. https://leetcode.com/problems/longest-palindromic-substring/

Round 2:

1. https://leetcode.com/problems/unique-paths/ (With DP and without DP)
2. Golang concurrency questions: goroutine, channels, pprof for memory dump
3. Golang Concurrency Coding problem: Multiple goroutine printing numbers 1 to 1000. Print them in ascending order.

Round 3:

1. Most challenging work, Project discussion
2. HTTP vs GRPC, Web 2.0, web 3.0
3. Coding Problem : With golang get makemytrip com html and search for word makemytrip and print its count.

Round 4:
Interviewer was already in the mood of rejection. In the first 5 min he said he would have rejected me in the first round itself :) . Don't know what's role of recruiter in MMT. Then he asked Uber system design and obviously didn't let me talk or make any point.
He bragged about his amazon experience ( while working in MMT :)) and also eating noodles with webcam open and in 40 mins completed the interview.

Mailed HR about this behaviour in the hope no other candidate will face this kind of humiliation.