examiner
noun [ C ]
uk/ɪɡˈzæmɪnər/ ussomeone who is responsible for deciding the questions for a professional examination, or deciding whether people have passed it:
Examiners should be chartered members of the Institution of Occupational Safety & Health.
GOVERNMENT, FINANCE
someone whose job is to make certain that banks and other financial organizations are obeying government rules:
Independent examiners and accountants can often offer help and advice with the layout of the accounts.