Airwallex Senior DevOps Engineer interview questions

1st round is a HR screeening. 2nd is Past Experience Deep Dive. 3rd is Systems Design. Final interview is with Director of Engineering. HR was proactive and communicative. I was provided with very informative guides before each interview describing what to expect and the success criteria for each interview. After the systems design round I was informed I was unsuccessful and provided feedback. I was shocked to find the feedback recorded did not relate to the success criteria provided or the system design portion of the interview at all.