Luma Financial Technologies Software Development Engineer III interview questions

I applied & soon got the response about the process. First round was coding round & interviewer was supportive & engaging & asked the basic question to code for. Second round was for System Design where 3 people were there and I was asked to design Amazon kind of e-commerce system excluding payment part. Here I failed as didn't mention many important points which need to be taken care-of but still interviewer calmly asked about whatever I put on the screen. I didn't ask hypothetical questions about the usage , DAU, memory, etc, as context was given to make the design scalable, highly available etc. Note : If you don't get any response within 8 days then consider that you are not selected, as they don't contact if not moving ahead with your profile.