Who can work as auditor at corporates?

1-Who can work as auditor at corporates?
Auditor can be people or stock corporations composed of the people, authorized by public oversight, accounting and auditing standards authority and obtaining license according to the law of certıfıed publıc accountancy and sworn ın certıfıed publıc accountancy numbered 3568 and dated 01.06.1989.When one of the below mentioned situations exist