Examiner

One who examines, tries, or inspects; one who interrogates; an officer or person charged with the duty of making an examination; as, an examiner of students for a degree; an examiner in chancery, in the patent office, etc.

Life and Health: physician appointed by an insurance company to examine applicants for insurance. See also Examined Business.

Regulatory: representative of the Commissioner of Insurance who conducts an audit of the insurance company's records. See also Convention Examination.

An official or other person empowered by another — whether an individual, business, or government agency — to investigate and review specified documents for accuracy and truthfulness.

A court-appointed officer, such as a master or referee, who inspects evidence presented to resolve controverted matters and records statements made by witnesses in the particular proceeding pending before that court.

A government employee in the Patent and Trademark Office whose duty it is to scrutinize the application made for a patent by an inventor to determine whether the invention meets the statutory requirements of patentability.

A federal employee of the Internal Revenue Service who reviews income tax returns for accuracy and truthfulness.

The noun has 2 meanings:

Meaning #1: someone who administers a test to determine your qualifications
  Synonyms: tester, quizzer

Meaning #2: an investigator who observes carefully
  Synonym: inspector

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