Recruiter was fairly co-operative. They accommodated my scheduling requirements and responded respectfully and in reasonable time. First round left a good impression about the company by not focusing on details of coding but over the problem solving. They were looking at how I could adapt existing LRU cache implementation to extend for various alternative cache eviction algorithms/strategies. Next round was 2 sys design and 2 coding interviews followed by 1 round of "informational interview aka behavioral/resume".