Senior Administrative Officer – TS/SCI, Executive Support

Coreone; Virginia (MN); On-site; USD 90,000 - 130,000; Full time

Job summary

Core One is seeking a highly organized Administrative Specialist with a TS/SCI clearance to support senior leadership and manage complex travel and tasking across Defense Travel System (DTS) and CONUS/Overseas TDYs.

The role requires coordinating with military and government partners, maintaining calendars, and ensuring regulatory compliance while delivering high-quality, mission-focused support in a fast-paced environment.

Qualifications

• Bachelor's degree or 10 years prior military experience in HR/administrative roles.
• 5 years’ experience as administrative, action, or staff officer within HQ USSOCOM or equivalent.
• 5 years’ experience communicating to senior leaders and across organizations.
• 5 years’ experience with USSOCOM, DOD, and knowledge of military branches' missions.
• 3 years’ experience as a Government Travel Card Agency Coordinator (GTC/ODTA).
• Active TS/SCI clearance.

Responsibilities

• Support daily operational functions of staff, routing and tasking via EWMS and TMT; track taskers to completion.
• Provide on-site executive assistance and protocol coordination with military and government partners.
• Maintain long-range calendars and coordinate conferences, briefings, and meetings.
• Serve as liaison for deployments, TDYs, and travel management.
• Manage Defense Travel System duties and travel authorizations.
• Ensure regulatory compliance and process travel vouchers and ITOs.
• Coordinate with Foreign Disclosure and partner nations as needed.

Skills

Communication skills

Written and verbal communication

Interagency liaison

Task management

Education

Bachelor’s degree

10 years military experience

Tools

Defense Travel System (DTS)

ODTA experience

EWMS familiarity

Job description

Core One is seeking a highly organized Administrative Specialist with a TS/SCI clearance to support senior leadership and manage complex travel and tasking across Defense Travel System (DTS) and CONUS/Overseas TDYs.

The role requires coordinating with military and government partners, maintaining calendars, and ensuring regulatory compliance while delivering high-quality, mission-focused support in a fast-paced environment.