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L3Harris Technologies

Global defense contractor delivering aerospace tech

Senior Specialist - Information Security Systems Engineer, Secret Clearance

Security Engineering & ArchitectureUpdated on Nov 14
Full-time$92.5k - $171.5k

About the Job

Requirements

  • Bachelor’s degree and a minimum of 6 years of prior relevant experience, or a graduate degree and a minimum of 4 years of prior related experience; in lieu of a degree, a minimum of 10 years of prior related experience.
  • A minimum of Collateral Secret security clearance is required.
  • Experience with High Assurance products, IASRD, and SERD requirements.
  • Experience configuring and using cyber defense and vulnerability assessment tools such as ACAS and SCC.

Responsibilities

  • Apply Systems Security Engineering methods, practices, and technologies to the architecture, design, development, evaluation, and integration of systems and networks to maintain system security.
  • Work with Government customers to define and implement security protection needs, concerns, and requirements early and sustainably throughout the system life cycle to support security authorization.
  • Work with systems developers or commercial product vendors in the design and evaluation of secure systems, networks, and database products.
  • Use encryption technology, vulnerability analysis, and security management methods; integrate multiple methods into a cohesive system security perimeter and environment, including the policies and procedures needed to monitor and maintain the environment.
  • Prepare Certification and Accreditation documentation using standards under RMF and derivative processes, including DoD 8510, JSIG, ICD-503, and CNSSI 1253, to achieve authorization of supported systems.
  • Represent program security needs, concerns, and requirements at customer meetings.
  • Certify Cryptographic High Assurance Devices.
  • Assess security and privacy controls in embedded systems using NIST 800-53.
  • Use Risk Management Framework accreditation and authorization processes, including steps 1–4 (categorization, controls selection, control implementation, and security assessment), and develop the standard body-of-evidence package.
  • Process accreditation and authorization packages.
  • Accredit Platform IT systems through RMF.
  • Collaborate with customers, internal program teams, and leadership to address program needs.
  • Provide DoD software selection and approval processes for commercial off-the-shelf, government off-the-shelf, and free and open-source software.
  • Support security engineering activities, including basis-of-estimate development, requirements development, design, testing, configuration management, and maintenance of information systems and data.
  • Assist program security with developing policies and procedures for emerging security technologies.
  • Support evaluation, qualification, testing, and delivery of security architecture improvements, obsolescence replacements, and vulnerability response projects.
  • Perform the work 100% onsite in a lab environment, with no remote-support option.

Desired Qualifications

  • Prior or current experience developing and certifying High Assurance Devices on embedded systems.
  • Prior or current experience with Risk Management Framework accreditation and authorization on embedded systems.
  • Prior or current experience developing and implementing Systems Security Engineering to protect Critical Program Information throughout the System Development Lifecycle.
  • Assess systems for Critical Program Information.
  • Conduct trade studies and develop Systems Security Engineering requirements.
  • Assess threats through attack and countermeasure analysis.
  • Conduct Verification and Validation activities.
  • Use DoD 5200.39 to identify and protect Critical Program Information.
  • Engineer trustworthy and secure systems in accordance with NIST 800-160.
  • Develop and implement comprehensive Program Protection Plans to safeguard Critical Program Information and technologies.
  • Draft Program Protection Plans, Cybersecurity Strategies, Security Classification Guides, and Systems Security Engineering Plans.
  • Interact with customers to define Systems Security Engineering requirements, solutions, trades, costs, implementation, system impacts, and effectiveness.
  • Top Secret/SCI clearance with an active polygraph is highly desired.

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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