Information Systems Security Officer (ISSO), Master

Overview: AMERICAN SYSTEMS, a 100% employee-owned federal contractor, is seeking a highly experienced Information Systems Security Officer (ISSO), Master to provide cybersecurity architecture, security engineering, and risk management support for complex systems in Dallas, TX . This role performs senior-level ISSO and ISSE duties , supporting system security engineering, assessment, authorization, and continuous monitoring under the JSIG, RMF, and applicable NIST SP 800-series guidance in a Special Access Program (SAP) environment .

Overview: Responsibilities:

• Develop and integrate cybersecurity architectures for systems and networks processing multiple classification levels
• Perform senior-level ISSO and ISSE duties throughout the system development, authorization, and continuous monitoring life cycles
• Apply JSIG, RMF, and NIST SP 800-series requirements to system design, control implementation, assessment, and authorization
• Manually develop and maintain authorization artifacts and bodies of evidence, including SSPs, control narratives, POA&Ms, inventories, diagrams, and assessment evidence
• Evaluate security architectures and system changes for impacts to security controls, authorization boundaries, and risk posture
• Perform hands-on security assessments using command-line audits, compliance scans, configuration analysis, log reviews, and control validation
• Identify security gaps and develop actionable risk management, remediation, and POA&M plans
• Determine protection needs and coordinate the allocation of system-specific, hybrid, and common controls
• Implement secure configuration processes and assess compliance with STIGs and Security Requirements Guides
• Use Tenable, Trellix, SolarWinds, SIEM, SCAP, OpenSCAP, and Evaluate-STIG to assess vulnerabilities, configurations, and controls
• Review system diagrams, data flows, inventories, interconnections, and configurations for accuracy and security compliance
• Coordinate with program security, authorization officials, assessors, system owners, engineers, and administrators
• Provide technical leadership for complex SAP cybersecurity, incident response, remediation, and authorization activities

Qualifications:

• Active Top Secret/SCI clearance with SAP eligibility
• Bachelor’s degree in Cybersecurity, Computer Science, Information Systems, Engineering, Information Technology, or a related field
• 11–12 years of relevant experience in cybersecurity, information assurance, systems security engineering, or ISSO support
• DoD 8140 IAM-III level certification (e.g. CISM, CISSP, GSLC, or CCISO)
• Experience performing combined ISSO and ISSE duties for classified systems in a SAP environment
• Advanced knowledge of the JSIG, RMF, and applicable NIST SP 800-series publications
• Proven experience manually developing authorization artifacts and bodies of evidence without reliance on automated RMF tools
• Experience authoring SSPs, control narratives, POA&Ms, inventories, architecture diagrams, and assessment evidence
• Hands-on experience assessing Linux and Windows systems through command-line validation, compliance scanning, configuration reviews, and log analysis
• Experience implementing and assessing STIGs, Security Requirements Guides, and secure configuration baselines
• Knowledge of enterprise architecture, firewalls, remote access, network infrastructure, and systems integration
• Experience preparing systems for authorization, reassessment, continuous monitoring, and security inspections
• Ability to identify deficiencies, assess risk, and provide actionable remediation recommendations
• Ability to coordinate with customers, security officials, system owners, engineers, and administrators

Pay Transparency Statement: AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $180,000.00/Yr. - USD $200,000/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance. EEO Statement: EEO Race/Sex/Disability Status/Veteran Status