Atlassian P40 | Accepted

I recently interviewed at Atlassian for a P40 role. The process consisted of 5 rounds:

YOE ~ 4
Recruiter reached out through Linkedin.

1. Round 1: DSA
   Variant of all O(1). There was a followup as well but don't remember that right now.
2. Round 2: Rating System (LLD)
   The task involved designing a system to rate and calculate a list of customer care reps sorted by their avg rating.
   Followup -
   Different tie breaker conditions.
   How to handle in case of concurrent env.
3. Round 3: System Design (HLD)
   This round revolved around designing a tagging system, and extension was creating a dashboard for top k tags by popularity.
   I was grilled on API endpoints (http methods used, what and why for params/request body, pagination etc), kafka vs sqs vs rabbitmq, cassandra/dynamodb vs postgres for storing tags data.
   Was using flink + redis sorted set as the latency requirements for top k tags was < 5 mins, so had to explain those choices over alternatives.
4. Round 4: Values
   Atlassian has 5 values, 1 question from each.
5. Round 5: Managerial
   This went for 70 mins, non-technical but in depth questions on the work you do. Should highlight impact. Amazon LPs are a great resource to prep for these kind of rounds.

Outcome
Got an offer after ~2 weeks, team match took 2 days.
Atlassian's evaluation is different as they look for red flags even if solution might be correct. I was not able to complete followups for round 2 and discussed orally (concurrency), but they were looking a lot more at thought process and conceptual understanding instead of correctness of solution.