Senior Cyber Security Information System Security Officer (ISSO)

CGI Federal is seeking a Senior Cyber Security / Information System Security Officer (ISSO) to provide advanced security oversight compliance monitoring and protection of mission-critical systems within a major federal modernization program. The Senior ISSO ensures all systems applications data flows and development environments adhere to federal security policies controls accreditation requirements and continuous monitoring standards. This role partners with engineering cloud DevSecOps QA and operations teams to ensure security is embedded across all phases of delivery.

Security Governance & Compliance

Implement and enforce federal security policies controls standards and procedures

Maintain security documentation including SSPs POA&Ms security checklists and control evidence

Support continuous monitoring activities vulnerability scanning and remediation tracking

Ensure systems applications and cloud environments remain compliant with applicable frameworks

System Security Oversight

Guide teams on secure architectures data-handling requirements and system hardening

Validate security controls across development testing migration and operational environments

Monitor audit logs access controls authentication mechanisms and system configurations

Support accreditation processes assessments and readiness activities

Collaboration & Advisory Support

Work closely with engineers cloud teams DevSecOps QA automation data migration and product leads

Provide security requirements design guidance and risk advisories during planning and development

Participate in sprint ceremonies technical reviews and release readiness cycles

Communicate risks incidents and mitigation strategies to leadership

Risk Management & Incident Support

Identify security risks and coordinate mitigation strategies across teams

Support incident response activities root-cause analysis and corrective action tracking

Lead remediation efforts for findings from scans audits or assessments

Documentation & Reporting

Maintain accurate and current security documentation for audits accreditation and compliance

Generate reports summarizing vulnerabilities remediation status and security posture

Support program leadership with security metrics dashboards and risk summaries

Must have an Active Top Secret Security Clearance

U.S. Citizenship

Bachelors degree and 8 years of experience in cybersecurity ISSO support or security engineering

Strong understanding of federal security frameworks and compliance requirements

Experience performing vulnerability scanning interpreting findings and driving remediation

Proficiency with identity/access management system hardening logging and auditing

Strong communication skills for partnering with technical teams and leadership

Preferred Qualifications

Experience supporting federal modernization or national-security programs

Familiarity with cloud environments (AWS strongly preferred)

Experience with DevSecOps practices CI/CD pipeline security and automated scanning

Security certifications such as CISSP CISM Security or similar

Due to the nature of this government contract US Citizenship is required.

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