Coderpad round:

Squares of sorted array(multiple follow-ups)
LFU cache implementation and discussion

Superday rounds(All were eliminatory):

First Round:

First DSA Question was something around array comparision, was very open ended & didn't find it on leetcode.

Was lc medium imo.

Second One was stack based string problem, similar to this: https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii/description/

Second round:

Based on my previous experience.

Was asked Twitter Design for news feed, choice of Data Strcuture & all as well.

Haven't received updates for next round yet. Will update once i hear from them regarding next round.

Update:

Got 3rd round:

Was a High level design + Low Level Design round + DSA.

Got Parking Lot Design.

Needed to specify enitities, relationships between them, the class structure, etc, all kind of things you do before coding out things, Design patterns etc were verbally discussed, then some kind of interview questions were asked from my CV on my current project regarding Database choice & all, when you choose which DB, How much was the load on current project, what is load testing, how you do it? How would you scale this if users increase? what are different type of load balancing techniques? etc.

Now, for the same parking lot question, he introduced few constraint regaridng location storing in (x,y) form. And now he said that parking lot has multiple entries and user comes at any of the entries, we need to get him the nearest parking spot, what algorithm will you use? What Data Structure is suitable etc.

Next round was Hiring Manager:

This also was HLD + DSA + Behavioural.

Was grilled on my CV & clients i had worked with(Service based company), the product what they did, How deployment stuff works there, Docker image, Dockerhub related stuff, You wrote this improved this much, how did you optimise, query optimisation techniques, N+1 query problems, explain analyze in postgres, indexing & joins related questions, Indexing tricky questions like if i have index on field email & field phone, and if i query like phone = x & email = y, will index still work? What are the patterns you avoid while coding, How much AI do you use in your work, How do you decide what is correct given by AI, How do you review PR and stuff.

This round also had HLD:
I was asked to design Datadog related service & just focus on the log part here.

This round also had DSA.

Longest Palindromic Substring
BFS based question, not on leetcode, if you're good with Graphs & stuff, it would be cake walk.

Final Round:
Director
It was very chill & casual, more like a conversation, Nothing technical here only behavioural questions and why GS and Stuff.

Verdict: Got offered Analyst Position.
Will update comp details when i receive offer letter