Information System Security Officer – ISSO

CACI International Inc

. Serve as the single point of contact on all systems security matters .

Posted 9/25/2026full-timeRemote • United StatesSeniorLead💰 $90,300 - $189,600 per yearWebsite

Tech Stack

Tools & technologies

CloudCyber Security

About the role

Key responsibilities & impact

Serve as the single point of contact on all systems security matters
Lead cybersecurity engineering efforts for assigned Program Management Organizations
Provide direct support to the Compliance Branch Lead
Spearhead systems' Authority to Operate (ATO) efforts
Maintain security posture in compliance with FISMA, DHS 4300 Series, NIST, and DHS and Component Directives
Execute complete Risk Management Framework (RMF) activities for ATO decisions
Perform system categorization, security control selection and implementation, self-assessments, POA&M development, and continuous monitoring
Develop and maintain System Security Plans (SSPs), including control baselines, inheritance, Business Impact Analyses, implementation statements, technical and system descriptions, and hardware and software inventories
Create and maintain Configuration Management Plans
Conduct Security Impact Analyses, approve Change Requests, and document security impacts of configuration changes
Develop and test Contingency Plans and Incident Response Plans
Conduct annual risk assessments and support security and vulnerability assessments
Advise system owners and senior executives on cybersecurity matters
Develop remediation work plans for assessment and audit findings
Maintain Hardware and Software Inventory Lists
Conduct FISMA Scorecard Analysis
Ensure proper access controls for system access
Track and suggest technologies, processes, and practices to protect networks, devices, programs, and data
Research and maintain proficiency in tools, techniques, countermeasures, and trends related to computer and network vulnerabilities, data hiding, network and device security, and encryption

Requirements

What you’ll need

U.S. Citizenship required
DHS EOD suitability or Current DHS EOD preferred
BS/BA + 8 years of applicable experience in information security
7+ years of experience in information security
Demonstrated expertise in RMF, Information Security processes, audits, tools, implementation, FISMA, NIST, IT security
Experience developing System Security Plans, POA&Ms, and Configuration Management Plans
Knowledge of NIST SP 800-37, NIST SP 800-53, and DHS 4300 Series requirements
One of the following Information Assurance Technician (IAT) Level III qualifications preferred: CISSP, CISM, or CompTIA Advanced Security Practitioner (CASP+)
Previous DHS experience preferred
Experience with CSAM, RegScale, eMASS, or similar GRC tools preferred
Experience supporting emergency operations or disaster response missions preferred
Knowledge of cloud security and FedRAMP authorization processes preferred
Experience with continuous monitoring preferred

Benefits

Comp & perks

Flexible time off benefit
Robust learning resources
Learning and development opportunities
Healthcare benefits
Wellness benefits
Financial benefits
Retirement benefits
Family support benefits
Continuing education benefits
Time off benefits