Senior Information Systems Security Officer – TS Clearance, SCI Eligibility

AMERICAN SYSTEMS

. Maintain the security posture and operational readiness of assigned information systems .

Posted 10/2/2026full-timeJacksonville • Florida • United StatesSenior💰 $140,000 - $165,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive knowledge of the DoD RMF process, including authorization and continuous monitoring, while effectively managing security documentation and compliance for classified information systems. Proficient in preparing authorization packages and conducting security assessments to ensure operational readiness and security posture.

Highest-signal resume keywords

DoD RMF ProcessCISSP CertificationSecurity Impact AnalysisBodies of Evidence CreationContinuous Monitoring

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Security AssessmentSystem AdministrationNetwork AdministrationVulnerability ManagementAccess ControlAudit LoggingConfiguration ManagementSecurity DocumentationAuthorization Packages PreparationSecurity Plans Development

Soft Skills

Strong Written CommunicationStrong Verbal CommunicationIndependent WorkPriority ManagementAttention to Detail

Certifications & Qualifications

DoD 8140 IAM Level III CertificationCISM CertificationC-CISO CertificationGSLC Certification

Industry Keywords

TOP SECRET/SCI ClearanceSAP EligibilityNIST SP 800-37NIST SP 800-53NIST SP 800-53ADoDI 8510.01JSIGSTIGsSRGsContinuous Monitoring Reports

Tech Stack

Tools & technologies

Cyber Security

About the role

Key responsibilities & impact

Maintain the security posture and operational readiness of assigned information systems
Partner with ISSMs, ISOs, system owners, administrators, engineers, assessors, and Authorizing Officials
Prepare and maintain RMF authorization packages and supporting security documentation
Conduct system reviews, self-inspections, continuous monitoring, and security assessments
Develop and maintain system descriptions, network topologies, security plans, POA&Ms, and assessment artifacts
Create, organize, and maintain Bodies of Evidence manually without GRC tools
Apply RMF, JSIG, SAP, DoD, NIST, and applicable STIG requirements
Review system changes and conduct security impact analyses for hardware, software, firmware, configuration, and authorization boundary changes
Coordinate proposed changes with the ISSM, ISO, AO, or DAO before implementation
Monitor system recovery activities to ensure security protections are restored and functioning properly
Ensure proper procedures are followed for clearing, sanitizing, storing, transporting, and destroying media and hardware
Review audit records, document anomalies, and support vulnerability remediation efforts
Support assessments, audits, inspections, ATO activities, design reviews, and corrective action tracking
Prepare security status reports, briefings, and other program documentation
Maintain accurate, current, and accessible security records
Provide RMF support to DoD, National Agency, SAP, and contractor organizations

Requirements

What you’ll need

U.S. citizenship required to obtain and maintain a security clearance
Active TOP SECRET/SCI clearance with SAP eligibility
8–10 years of relevant experience in ISSO, ISSM, system administration, network administration, cybersecurity analysis, security engineering, or similar roles
DoD 8140 IAM Level III certification, such as CISSP, CISM, C-CISO, or GSLC, or ability to obtain certification within 6 months of hire
Experience supporting classified or mission-critical information systems
Deep knowledge of the DoD RMF process, including authorization and continuous monitoring activities
Working knowledge of DoDI 8510.01, NIST SP 800-37, NIST SP 800-53, NIST SP 800-53A, CNSSI 1253, DoDM 5205.07, JSIG, STIGs, and SRGs
Demonstrated JSIG experience supporting Special Access Program information systems
Experience manually creating, compiling, and maintaining Bodies of Evidence without GRC tools
Experience preparing authorization packages, POA&Ms, control documentation, assessment artifacts, and continuous monitoring reports
Experience conducting security impact analyses for system changes and configuration management activities
Strong understanding of system and network administration, access control, audit logging, vulnerability management, and secure configurations
Strong written and verbal communication skills
Ability to work independently, manage competing priorities, and produce accurate, inspection-ready documentation
Ability to travel within CONUS, generally up to 10 days annually

Benefits

Comp & perks

Comprehensive healthcare benefits for employees and dependents
Paid leave
Retirement plans
Insurance programs
Education and training assistance
100% employee-owned company