Jobs and Careers

Human Resources Subject Matter Expert (HR SME)

Washington, United Statesfull_timeVerifiedPosted 5 Aug 2026

💰 $210,000/yr($180,000/yr – $210,000/yr)

About the role

MTSI is seeking a Human Resources Subject Matter Expert (HR SME) that will provide expert-level support for the full range of workforce planning, staffing, personnel management, and organizational development activities required by a Defense Agency. The position will support a complex, blended workforce consisting of DoW civilian employees, military personnel from all services, Joint Duty Assignees, detailees, and contractor personnel.

The successful candidate will possess extensive knowledge of DoW human resources policies, processes, systems, and documentation requirements. This individual will manage and coordinate HR actions throughout the employee lifecycle, maintain accurate workforce and position-management records, and advise leadership on staffing, organizational structure, performance management, and workforce-related risks.

Key Responsibilities

Provide subject matter expertise on DoW civilian and military personnel policies, workforce planning, staffing, position management, and organizational design
Support the management of a blended workforce that includes:
DoW civilian employees
Active-duty and reserve military personnel from all services
Joint Duty Assignees
Detailees
Contractor personnel
Manage and coordinate the DoW civilian hiring process from initiation through onboarding, including:
Identifying and validating staffing requirements
Reviewing organizational structures and position requirements
Developing or updating position descriptions
Preparing and coordinating recruitment and hiring packages
Tracking vacancy announcements, certificates, selections, and personnel actions
Coordinating preemployment and onboarding activities
Monitoring hiring timelines and resolving process delays
Establish, review, and maintain manpower and personnel documentation, including:
Unit Manning Documents (UMDs)
Position descriptions (PDs)
Organizational charts and staffing plans
Billet and position-control records
Performance plans and appraisal documentation
Workforce rosters and personnel-status reports
Support the development, administration, and maintenance of employee performance-management and appraisal systems
Advise supervisors and employees on performance plans, progress reviews, ratings, awards, and related documentation requirements
Monitor staffing levels, vacancies, gains, losses, hiring actions, military rotations, joint-duty assignments, details, and contractor support
Reconcile authorized, assigned, and onboard staffing data across manpower, personnel, and organizational records.
Identify workforce gaps, staffing risks, hiring delays, documentation deficiencies, and potential corrective actions
Prepare workforce analyses, staffing reports, decision memoranda, briefings, executive summaries, and responses to senior-leader data calls
Coordinate HR activities with manpower offices, servicing human resources organizations, military personnel offices, security offices, hiring managers, supervisors, and other stakeholders
Use and maintain HR-related software and personnel systems, including MyBiz+, the Defense Civilian Personnel Data System (DCPDS), the DoW Manpower Management System (MMS), and other applicable workforce-management tools
Ensure HR actions and records comply with applicable statutes, regulations, policies, classification standards, merit-system principles, and records-management requirements
Protect sensitive personnel information and ensure appropriate handling of personally identifiable information

Organizational Stand-Up and Change Management Responsibilities

Support the establishment of new organizations, offices, divisions, or functional capabilities
Develop workforce and staffing plans aligned with approved missions, functions, organizational structures, and resource levels
Identify required civilian positions, military billets, joint-duty assignments, details, and contractor support
Coordinate the creation, classification, transfer, realignment, or elimination of positions and billets
Develop and maintain organizational charts, manpower documentation, position descriptions, staffing rosters, and transition plans
Track and coordinate personnel actions resulting from organizational changes, including reassignments, details, promotions, hiring actions, management-directed moves, and reporting-chain changes
Assess the workforce impacts of reorganizations and advise leadership on implementation risks, sequencing, communications, and required approvals
Ensure that organizational changes are accurately reflected in HR, manpower, personnel, and performance-m