Senior Specialist, Information Security Systems Engineer (ISSE)

About the role

L3Harris is seeking a Senior Specialist, Information Security Systems Engineering (ISSE) to support the design, implementation, and sustainment of secure information systems across enterprise and program environments.

Responsibilities

• Prepare and manage Assessment & Authorization documentation using RMF and derivative processes (e.g., DOD 8510, JSIG, ICD-503, CNSSI 1253) to achieve security authorization of supported systems.
• Support the design, integration, and maintenance of secure system architectures for on-premises environments.
• Apply cybersecurity engineering principles throughout the system development lifecycle.
• Analyze system requirements and derive security requirements, controls, and technical solutions.
• Perform security assessments, gap analyses, and risk evaluations for information systems and supporting infrastructure.
• Contribute to development of policies, standards, procedures, and technical documentation related to information security engineering.
• Communicate technical risks, findings, and recommendations to both technical and non-technical stakeholders.

Qualifications

• Bachelor’s Degree and minimum 6 years of prior relevant experience.
• Graduate Degree and a minimum of 4 years of prior related experience.
• In lieu of a degree, minimum of 10 years of prior related experience.
• Active clearance: TS/SCI w/CI Poly.
• Must have or be able to obtain and maintain IAT Level II minimum (Security+ CE, CCNA Security, or equivalent) within 3-months of start.

Preferred Additional Skills

• Familiarity with emerging technologies such as cloud computing, containerization, and microservices, and their security implications.
• Familiarity with STIG/SRG compliance validation and automated compliance scanning tools.
• Experience with security tools such as IDS/IPS, vulnerability scanners, and endpoint protection solutions.
• Professional certifications such as Security+, CISSP, or similar.
• Familiarity with DevSecOps practices, CI/CD pipeline security, and infrastructure as code security principles.
• Experience in regulated environments such as defense, aerospace, government contracting, or critical infrastructure.