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L3Harris Technologies

Global defense contractor delivering aerospace tech

Lead Information Security Systems Engineer

Security Engineering & ArchitectureConfirmed live in the last 24 hours
Full-timeWaco, TX, USANo salary listed

About the Job

Requirements

  • Hold a Department of Defense 8570/8140-approved baseline certification; Security+ or equivalent is required.
  • Be well versed in National Institute of Standards and Technology (NIST) 800-53 standards.
  • Have a Bachelor's degree in STEM and at least 9 years of related Information Security experience, or a graduate degree in STEM and at least 7 years of related Information Security experience.
  • Hold an active Top Secret/Sensitive Compartmented Information (TS/SCI) government security clearance.

Responsibilities

  • Execute program work directly, interact with customers, and improve processes as the Information System Security Engineer (ISSE) subject matter expert for systems, software, and networks.
  • Ensure delivered information systems meet security standards in accordance with ICD 503 and the Risk Management Framework (RMF).
  • Interact with customers and accreditation officials to define, execute, and achieve required cybersecurity objectives, and provide Cyber Security as a Service (CSaaS) support alongside customers.
  • Identify information protection needs for systems, software, and networks, and assist design engineers with system design focused on cybersecurity.
  • Support steps one through six of the RMF security life cycle and ensure information assurance is included in the design architecture.
  • Document security controls and requirements in System Requirements Specifications, and assist ISSEs with analysis of user and system requirements and constraints.
  • Work with the software development team on secure software development practices to address software vulnerabilities early in development; perform dynamic and static code analysis using code analysis tools.
  • Develop a secure, hardened Linux-based operating system.
  • Use vulnerability scanning tools to scan target networks and applications, identify weaknesses, and track software vulnerability findings and patches.
  • Develop Risk Assessment Reports (RAR), System Security Plans (SSP), Security Control Traceability Matrices (SCTM), and other materials needed to obtain an Authorization to Operate (ATO) for fielded systems.
  • Review ISSE work products for completeness and quality.
  • Support travel up to 15% within and outside the continental United States.

Desired Qualifications

  • CISSP or equivalent certification.
  • Understand the INCOSE Systems Engineering V-model and be able to oversee work products and coach direct reports through requirements capture, design, purchasing, build, and test.
  • Previous experience analyzing system specifications and translating them into Information Security system requirements.
  • Previous accreditation Information Security experience.
  • Experience working in Xacta or eMASS.
  • Experience obtaining authorization for systems on or in support of an aircraft.

About the Company

L3Harris Technologies

Global defense contractor delivering aerospace tech

L3Harris Technologies provides advanced aerospace, defense, and space systems for governments and commercial customers. Its products include sensors, communications, and propulsion—such as tactical radios, night-vision gear, satellite payloads, missile defense, and space propulsion—delivered as integrated systems for operations across air, land, sea, space, and cyber domains. The company blends legacy technologies from two joining giants with newer capabilities, faster acquisition cycles, and a focus on missiles, space, and resilient communications to field solutions quickly. Its goal is to be a trusted, scale-ready provider of next‑generation defense and intelligence capabilities for national security and related customers.

Company size
10,001+
Company stage
IPO
Headquarters
Melbourne, FL
Founded
1895

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