Specialist, Information Security Systems Engineer (ISSE)

Job Description

L3Harris is looking for an experienced Information Security Systems Engineer (ISSE) to join the Engineering team in Palm Bay, FL supporting the design, implementation, and sustainment of secure information systems across enterprise and program environments. This role is responsible for applying cybersecurity engineering principles throughout the system lifecycle, helping ensure systems meet security, compliance, and mission requirements.

Essential Functions

• Prepare and manage Assessment and 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 principles and security-by-design practices 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 4 years of prior relevant experience.
• Graduate Degree and a minimum of 2 years of prior related experience.
• In lieu of a degree, minimum of 8 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 (e.g. Understanding of security control inheritance in cloud-based systems.)
• 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.