Information Systems Security Officer II​/III

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Full Time San Diego, CA, US 2 Attachments

5 days ago Requisition

Salary Range: $95,000.00 To $ Annually

Position: Information Systems Security Officer (ISSO)
Level: Mid to Senior
Location: San Diego, CA (Hybrid/Remote Considered)
Telework: Hybrid remote/onsite, with typical set schedule at Government facility
Travel: Less than 10%
Salary:$95,000–$141,000, depending on experience, clearance, certifications, and contract requirements

XSITE LLC is looking for an Information Systems Security Officer (ISSO) to join our team in San Diego, CA in support of the anticipated PMW/A 170 office/contract
. This position is contingent upon contract award and Government approval, with award anticipated within the next few weeks.

We are a Service-Disabled Veteran-Owned Small Business headquartered in San Diego. We provide full-spectrum systems and systems-of-systems engineering and integration services and solutions for space, C5

ISR, cyber, and enterprise information systems. Our core capabilities include AI/ML, Software Development & Sustainment, Systems Engineering, including MBSE, and Modeling & Simulation.

• Support Risk Management Framework (RMF), Assessment & Authorization (A&A), and Authorization to Operate (ATO) activities for Navy/DoD information systems.
• Develop, review, maintain, and update cybersecurity documentation, including System Security Plans (SSPs), Security Assessment Reports (SARs), Plans of Action & Milestones (POA&Ms), Security Categorization documentation, Privacy Impact Assessments, and related A&A artifacts.
• Support continuous monitoring, annual security reviews, control validation, and audit-readiness activities.
• Coordinate with system owners, engineers, administrators, Security Control Assessors, Authorizing Officials, and other stakeholders to support cybersecurity compliance and risk management.
• Track, document, and support remediation of vulnerabilities, STIG findings, POA&M items, and other cybersecurity risks.
• Use cybersecurity and information assurance tools such as eMASS, ACAS/Nessus, STIG Viewer, and related DoD/Navy systems as required.
• Support configuration management and baseline change activities to ensure cybersecurity impacts are identified, documented, and addressed.
• Assist with cybersecurity inputs for system changes, boundary updates, hardware/software lists, network diagrams, and authorization packages.
• Maintain awareness of applicable DoD, Navy, and federal cybersecurity policies, including RMF, NIST SP 800-53, DoDI 8510.01, and DoD 8140/8570 workforce requirements.

• Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, Engineering, Mathematics, Business, Management, or a related technical or managerial field preferred. Additional relevant cybersecurity, military, Navy, RMF, A&A, or information assurance experience may be considered in lieu of degree.
• 3–10 years of practical experience in cybersecurity, information assurance, engineering, test and evaluation, RMF, A&A, C&A, or related information system security support.
• Experience supporting RMF, A&A, ATO lifecycle, cybersecurity compliance, or Navy/DoD information system security activities.
• Experience preparing, maintaining, or reviewing cybersecurity artifacts and compliance documentation in support of ATO requirements.
• Experience with Information Assurance tools such as eMASS and ACAS/Nessus.
• Working knowledge of RMF, ATO requirements, POA&M tracking, vulnerability management, security controls, and information system security posture maintenance.
• Active U.S. Secret clearance preferred; ability to obtain and maintain required clearance is required.
• Strong written and verbal communication skills, with the ability to coordinate across technical teams, Government stakeholders, and program leadership.

• Prior experience supporting PMW/A 170, PEO C4I, NAVWAR, NIWC, Navy PNT systems, or other Navy…