Round 1 - Was conducted by a third party company authorized by Atlassian - mostly a screening round. Had a couple of common theoretical questions and an easy programming question which uses stack
Round 2 - Simple coding round to evaluate code cleanliness and OOPS mainly.
Round 3 - Was asked to solve a real-life problem like a rate-limiter.
Round 4 - Design round. Given a real-life example build a system/service to serve the purpose. Focuses on overall knowledge on each aspect of any service.
Round 5 - Values round. Was more of a discussion and was asked to real life examples to that align with the company's values.
Round 6 - Manager round. Again, was more of a discussion to know more about working style and attitude.