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Assistant Facility Security Officer (AFSO)

Core One
Sterling, VA$70k – $75kPosted 15 days ago

Role Overview

Core One is hiring a mid-level Assistant Facility Security Officer (AFSO). This is a contract role in Sterling. posted 2 weeks ago. The posted range is $70k to $75k. Full responsibilities, required qualifications, and the apply link are listed in the description below.

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Job description

Join our team at Core One! Our mission is to be at the forefront of devising analytical, operational and technical solutions to our Nation's most complex national security challenges. In order to achieve our mission, Core One values people first! We are committed to recruiting, nurturing, and retaining top talent! We offer a competitive total compensation package that sets us apart from our competition. Core One is a team-oriented, dynamic, and growing company that values exceptional performance!

*This position requires Top Secret (TS) Clearance* 

Salary Range: $70,000 - 75,000

Job Summary:

The Assistant Facility Security Officer (AFSO) supports the Senior Facility Security Officer in administering personnel and facility security functions for a cleared defense contractor. Responsibilities include processing security clearances, maintaining security records, coordinating access and visit requests, conducting security briefings, and assisting with compliance requirements. The position requires an active Top Secret clearance, strong attention to detail, and the ability to handle sensitive information with discretion.

 

Responsibilities:

  • Assist the Facility Security Officer (FSO) in administering the company's industrial security program in accordance with NISPOM requirements.
  • Process and maintain personnel security clearance records, including onboarding, updates, transfers, and periodic reinvestigations.
  • Utilize DISS, NBIS, and other government security systems to manage personnel security actions.
  • Coordinate and process visit requests, incoming visitor notifications, and access authorizations.
  • Conduct employee security briefings, debriefings, and annual security awareness training.
  • Maintain accurate security files, records, and documentation in accordance with DCSA requirements.
  • Assist with classified material accountability, inventory, storage, transmission, and destruction activities.
  • Support the administration of facility access controls, badges, visitor logs, and secure areas.
  • Track and maintain security training records and compliance requirements.
  • Assist with preparation for DCSA assessments, self-inspections, and internal security reviews.
  • Review and maintain DD254 security requirements and related contract security documentation.
  • Coordinate with Human Resources, Contracts, IT, and Program Management regarding security-related matters.
  • Assist in documenting and reporting security incidents, violations, and suspicious activities.
  • Provide administrative support for the overall security program and perform other security duties as assigned.

Qualifications:

  • Active Top Secret security clearance required.
  • 1–3 years of industrial security, personnel security, or related experience, preferably as an Assistant FSO. 
  • Facility Security Officer (FSO) Certification. 
  • Familiarity with DISS, NBIS, NISPOM, and DD254 requirements preferred.
  • Strong organizational, communication, and administrative skills.
  • Proficiency with Microsoft Office applications.

Security Clearance: Top Secret (TS)

 

Core One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

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About Core One

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Core One

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Frequently Asked Questions

How do I apply for the Assistant Facility Security Officer (AFSO) position at Core One?

Use the Apply button above to submit your application directly to Core One. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.

Where is the Assistant Facility Security Officer (AFSO) position at Core One located?

This position is based in Sterling. Core One has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.

How much does the Assistant Facility Security Officer (AFSO) role at Core One pay?

Core One has posted a compensation range of $70k to $75k for this position. Final offers typically vary based on candidate experience, location, and internal salary bands.

When was the Assistant Facility Security Officer (AFSO) role at Core One posted?

This role was posted on July 8, 2026 (15 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.

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