Does this sound ok for a subject verb agreement? Either the interviewer or the committe members usually begin by asking simple questions.

It's correct, yes.

The subject "members" (plural word) is nearer the verb, so the verb needs to be in plural form.

=)

Yes, you are correct. The subject-verb agreement in the sentence is accurate. When using the words "either...or," the verb should agree with the subject that is closer to it. In this sentence, the subject "members" is plural, so the verb "begin" is also in the plural form "begin." Well done!