question setter; examiner who prepares questions
Refers to the person who creates or sets questions for an exam, quiz, or test.
The question setter for this exam is the same teacher as last year.
I solve the problems while considering the question setter's intentions.
試験官 is a proctor or examiner who supervises the test, not necessarily the one who writes the questions.
Compound of 出題 (shutsudai, 'setting a question') + 者 (sha, 'person').