If you are applying for this role in global payments, get ready for a lengthy interview process (5 rounds + Case study) where the interviewer shows very little interest in your answers. The tech/behavioural interview questions are relatively doable, but beware that the HM will most definitely be based in China. That being said, bringing your ACS best-is-yet-to-be English into the interview is like bringing a gun to a knife fight. Be prepared for interviewers to not get you at least 70% of the time in English. So, you MOST definitely will have to be business proficient in Mandarin to get this role.