On-Site Assistant Contractor Security Officer (ACSSO)

Liberty Alliance, LLC; Bay St. Louis (MS); On-site; USD 65,000 - 95,000; Full time

Job summary

Liberty Alliance, Inc. seeks an Assistant Contractor Special Security Officer (ACSSO) to support daily classified facility operations in Mississippi.Responsibilities include access controls, safeguarding classified information, and coordination with CSSO and DoW/IC security requirements.

The role requires a TS clearance with SCI eligibility, 2–3 years of relevant experience, and ability to work on-site in Mississippi.

Qualifications

• High school diploma or equivalent; security training preferred.
• 2–3 years experience supporting DoW security operations or classified facilities.
• Active Top Secret clearance with SCI eligibility.
• Knowledge of safeguarding classified information and access controls.
• Experience maintaining security documentation and personnel access records.
• Familiarity with DISS and government security systems.
• On-site work in Mississippi.

Responsibilities

• Support daily classified facility security operations, including access controls and inspections.
• Verify clearances, SCI eligibility, and need-to-know requirements.
• Maintain security records, rosters, and visitor logs; manage security databases.
• Ensure proper handling, safeguarding, storage, transmission and destruction of classified information.
• Maintain SOPs, emergency action plans, incident reports, and compliance docs.
• Coordinate with CSSO, SSOs and program personnel on security requirements.
• Respond within 1 hour to alarms/incidents; escalate as needed.
• Assist with security awareness training and briefings.
• Support security arrangements for meetings and program activities.
• Serve as alternate on-site security representative when designated.

Skills

Security clearance

Communication

Problem solving

Independence

Education

High school diploma

Security training

Tools

DISS

Job description

Liberty Alliance, Inc. seeks an Assistant Contractor Special Security Officer (ACSSO) to support daily classified facility operations in Mississippi.Responsibilities include access controls, safeguarding classified information, and coordination with CSSO and DoW/IC security requirements.

The role requires a TS clearance with SCI eligibility, 2–3 years of relevant experience, and ability to work on-site in Mississippi.