Final answer:
The exception to Single Job Vacancy Certification at Multiple Grade Levels in the federal government is the Senior Executive Service (SES) positions.
Step-by-step explanation:
The exception to Single Job Vacancy Certification at Multiple Grade Levels in the federal government is the Senior Executive Service (SES) positions. The SES positions are filled by individuals who have demonstrated their experience in executive positions and they require certain executive core qualifications (ECQs) such as leading change, being results-driven, demonstrating business acumen, and building better coalitions.