Information System Security Engineer (ISSE)

Job Summary

This role supports information system security engineering for complex C5ISR environments, ensuring systems meet cybersecurity, compliance, and risk management requirements throughout their lifecycle. The position focuses on implementing and assessing security controls, supporting authorization activities, and guiding secure system design and operations.

Key Responsibilities

Determine and document system security control requirements

Implement and maintain security controls within compliance and authorization tools

Conduct annual security control reviews through testing, examination, and interviews

Assess the effectiveness of cybersecurity measures across systems

Analyze threats and vulnerabilities to develop system security risk profiles

Identify and guide remediation of technical security issues during system testing and deployment

Evaluate and recommend cybersecurity products that meet organizational validation requirements

Collaborate with stakeholders to define functional needs, develop secure architectures, and communicate security best practices

Document network and system security configurations for existing and emerging systems

Develop and document best practices for securing networks, applications, servers, databases, and system components

Perform cybersecurity hardening and continuous monitoring, including STIGs, patching, and vulnerability scanning

Manage security-related configurations based on operational requirements

Integrate cybersecurity vulnerability mitigations into system designs

Provide implementation guidance to customers for secure system deployment

Support Risk Management Framework (RMF) activities and associated documentation

Assist with security certification, test, and evaluation activities

Ensure all security design and development activities are thoroughly documented

Required Skills & Qualifications

Completion of a CNSSI 4014 (Information Systems Security Officer–qualified) course or equivalent

CompTIA Security+ certification

Experience with Marine Corps information security programs, authorization procedures, and compliance requirements

Active Secret security clearance

Preferred Qualifications

Bachelors degree in Cybersecurity, Information Technology, or a related field

Certified Authorization Professional (CAP) certification

GIAC Security Leadership Certification (GSLC)

Completion of CID M09BNJ1 Cybersecurity Technician course

Completion of CNSSI 4013 (System Administrators–qualified) course

NDU Chief Information Security Officer (CISO) certificate