First round was with hiring team member who asked about my current job, challenges, problems that I have solved in the past and experience in the relevant areas to their project. Second round was a coding challenge on hacker rank. 2 hrs. I really liked the problem & its scope. Then there was onsite. Had like 6 rounds. First was whiteboard coding and API design round. Questions were very relevant to the project. The following round was about my experience, roles & responsibilities, technical skills & challenges from recent projects. Then there was a lunch and I believe it was a cultural fit sort of discussion. Then there was a coding round which again was highly relevant to the project and hardcore computer science distributed systems fundamentals. Then the architect round was where I had to solve distributed systems design challenges and share about some the distributed problems in my recent projects and how we solved them. Final round was kind of problem solving round again relevant to the project which I believe was picking my brains on some of the challenges they have & how would I solve those problems. Overall, it was one of the best interview experiences I had as the problems, discussions & assessments were highly relevant to the projects & problems at hand rather than some random template based or leet code questions. All my interactions with individuals were warm & enjoyable.