Information Assurance, Lead

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L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Lead, Information Security System Engineer

Job Code: 40592

Job Location: Nashville, TN

Job Schedule: 9/80 Every other Friday off!

The Lead Cybersecurity Engineer serves as the accountable owner for cybersecurity implementation and validation across the program and broader product line. This role partners with program leadership, systems engineering, software, hardware, integration and test, network engineering, and government stakeholders to translate contractual, mission, and regulatory requirements into secure architecture, secure network designs, verifiable technical requirements, and objective evidence needed for authorization and operational use. The ideal candidate brings deep experience applying NIST SP 800-53, NIST SP 800-171, and RMF principles in complex DoD or national security environments and can drive cybersecurity execution from design through deployment and sustainment.

• Own cybersecurity implementation and validation for the program, ensuring security requirements are decomposed into system, software, hardware, and network designs and verified through analysis, inspection, testing, continuous monitoring, and closure of assessment findings.

• Lead secure network architecture and interface protection activities across the product line, including boundary protection, segmentation, routing and switching design considerations, access control, logging, encryption, secure remote access, firewall rules, and integration with mission networks.

• Define, allocate, and trace cybersecurity requirements for product line components and interfaces, and ensure alignment with NIST SP 800-53, NIST SP 800-171, program security requirements, and customer expectations.

• Develop, maintain, and deliver authorization artifacts including the System Security Plan (SSP), Security Assessment Report, Plan of Action and Milestones (POA&M), network diagrams, data flow artifacts, and privileged user guidance.

• Coordinate vulnerability management, hardening, STIG implementation, scan execution, remediation planning, and closure of cybersecurity findings across development, integration, test, deployment, and sustainment.

• Partner with engineering and program leadership to assess risk, recommend secure design decisions, and drive timely resolution of cybersecurity issues that affect cost, schedule, performance, or authorization posture.

• Support cybersecurity test planning and execution, requirements verification, and evidence collection to demonstrate implementation effectiveness and readiness for customer review and operational acceptance.

• Brief customers and program leadership on cybersecurity status, residual risk, compliance … [truncated]