Round 1: Coding and Problem Solving(60 mins)
This round was taken by an external agency named Interview Vector. They asked two questions:

1. LC medium level question - solved it completely with all Test cases passed.
2. Find out all the common durations of users logged in at the same time in system - had to come up with an approach stating what all data structures can be used and how will the implementation take place.

Round 2: Design(60 mins)

1. Brief intro.
2. Design a system to serve ads by advertisers on your platform. Had to give a complete design focussing a lot on LLD and ending with a high level design.

Round 3: Hiring Manager(60 mins)

1. Intro
2. Asked in depth about the current project and the work that I am doing.
3. Asked a lot of questions on LLD, SOLID design principles and some design patterns.
4. Some work related and behavioral questions like challenging tasks, etc.
5. Do you take part in code reviews, approaches that you follow
6. How do you ensure code quality

Interview wanted to focus in depth on the current work and my knowledge of my current project and a lot on low level design. We went overtime by around 15 mins.

Verdict: Selected
https://leetcode.com/discuss/compensation/1595250/cleartrip-sde-2-bangalore/1160933