For GS-13: One year of specialized experience equivalent in level of difficulty and responsibility to that of the next lower grade (GS-12) within the federal service, which demonstrates the ability to perform the duties of the position, is required. Specialized experience at the GS-12 level is defined as: Demonstrate mastery of the concepts and practices of Military pay operations to resolve broad and difficult technical and policy problems with DoD-wide impact. Understanding of the overall DFAS mission, its relationship with other government agencies, and the ability to standardize customer service policies across all payroll sites. Expertise in interpreting complex policies and provide authoritative functional recommendations. You may qualify for consideration if meeting specialized experience, education requirement, 90 days after competitive appointment requirement, and all other qualification requirements within 30 calendar days after the closing date of the announcement, unless otherwise indicated on the announcement. This position requires you to obtain and maintain a Level 2 Certification under the DoD Financial Management (FM) Certification Program as a condition of employment. If you are selected, you will have to obtain this certification within two (2) years of your entry on duty in the position unless you are already in a position that requires a Level 2 Certification in which case you must complete the certification within the original 2-year period. Failure to become certified within the required time-frame may be grounds for removal from the position and/or from Federal service. Information about the DoD FM Certification Program is available at FM Certification.