Assistant Contractor Special Security Officer (ACSSO) in Bay St. Louis, Mississippi at Liberty Alliance LLC

Liberty Alliance, Inc. is seeking an experienced Assistant Contractor Special Security Officer (ACSSO) to support security operations within a classified facility supporting Department of War (DoW) programs in Mississippi.

The ACSSO will assist the Contractor Special Security Officer (CSSO) with daily classified facility operations, personnel access management, physical security, classified information safeguarding, and compliance with applicable DoW and Intelligence Community (IC) requirements. This position will coordinate with the on-site CSSO, Government security representatives, and program personnel to maintain facility security and operational readiness.

Key Responsibilities

• Support daily classified facility security operations, including facility opening and closing procedures, physical security inspections, access controls, alarm monitoring coordination, and facility maintenance.
• Verify personnel clearances, SCI eligibility, access authorizations, and need-to-know requirements; assist with visitor certifications, indoctrinations, debriefings, and personnel security processing.
• Maintain accurate security records, personnel access rosters, visitor logs, and applicable Government security databases, including DISS.
• Ensure proper handling, safeguarding, storage, transmission, accountability, and authorized destruction of classified information and materials.
• Maintain security standard operating procedures (SOPs), emergency action plans, incident reports, and other required compliance documentation.
• Support classified facility accreditation activities, security self-inspections, Government audits, corrective actions, and compliance with ICD 705, applicable SCI requirements, and DoW security regulations.
• Respond 24/7/365 within one hour to report security alarms, incidents, suspected compromises, and violations using established escalation procedures.
• Assist with security awareness training, briefings, and reporting of suspected security incidents, violations, or compromises.
• Coordinate with Government Special Security Officers (SSOs), security authorities, program managers, and Company security personnel regarding security requirements and classified activities.
• Support security arrangements for classified meetings, visitors, exercises, and other program activities.
• Perform assigned security responsibilities independently and serve as an alternate on-site security representative when designated and authorized.
• Complete all other tasks and duties as needed to help drive Liberty Alliance's Vision, fulfill our Mission, and uphold our organization's values.

Qualifications

Required

• High school diploma or equivalent; additional education or relevant security training preferred.
• Minimum of 2–3 years of experience supporting DoW security operations, classified programs, personnel security, or classified facility operations.
• Active Top Secret security clearance with current SCI eligibility and ability to obtain required program accesses.
• Working knowledge of classified information safeguarding, personnel security, physical security, and applicable DoW and IC security requirements.
• Experience maintaining security documentation, managing personnel access, and supporting security compliance activities.
• Familiarity with DISS and other applicable Government security management systems.
• Strong organizational, communication, and problem-solving skills, with the ability to work independently and exercise sound judgment.
• Ability to work on-site in Mississippi.

Preferred

• Previous experience as an Assistant CSSO, Security Specialist, Special Security Representative (SSR), or similar role supporting classified operations.
• Experience working within or supporting a Classified facility, including security inspections, access control systems, intrusion detection systems, and classified material accountability.
• Familiarity with ICD 705, ICD 704, DoDM 5105.21, and applicable National Industrial Security Program requirements.
• Experience supporting DoW, USSOCOM, or Intelligence Community programs.
• Completion of relevant Defense Counterintelligence and Security Agency (DCSA) or Intelligence Community security training.