Senior Cyber Security Engineer

L3Harris Technologies

. Apply Systems Security Engineering methods, practices, and technologies to system and network architecture, design, development, evaluation, and integration .

Posted 11/12/2026full-timeUnited StatesSenior💰 $92,500 - $197,500 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Systems Security Engineering, including the development and implementation of security measures throughout the systems lifecycle. Proficient in RMF accreditation processes, vulnerability assessments, and the integration of security methods into system architectures.

Highest-signal resume keywords

Systems Security EngineeringRMF AccreditationVulnerability AssessmentHigh Assurance Device CertificationNIST 800-53 Compliance

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Encryption TechnologyVulnerability AnalysisSecurity Management MethodsCyber Defense Tools ConfigurationA&A Package ProcessingProgram Protection Plans DevelopmentSecurity Classification GuidesSystem Security Engineering PlansCOTS, GOTS, and FOSS ApprovalCritical Program Information Assessment

Soft Skills

CollaborationMentoringLeadershipTask Assignment TrackingIndependent Operation

Tools & Technologies

ACASSCCDoD 5200.39NIST 800-160Cybersecurity Strategies

Certifications & Qualifications

Collateral Secret Security Clearance

Industry Keywords

Certification and Accreditation DocumentationDOD 8510JSTIGICD-503CNSSI 1253Embedded Systems SecurityTrade StudiesAttack/Countermeasure AnalysisVerification and Validation ActivitiesSystem Development Lifecycle

Tech Stack

Tools & technologies

Cyber Security

About the role

Key responsibilities & impact

Apply Systems Security Engineering methods, practices, and technologies to system and network architecture, design, development, evaluation, and integration
Work with Government customers to define and implement security protection needs, concerns, and requirements throughout the systems lifecycle
Work with systems developers and commercial vendors to design and evaluate secure systems, networks, and database products
Use encryption technology, vulnerability analysis, and security management methods
Integrate security methods into a cohesive system security perimeter and environment
Develop policies and procedures to monitor and maintain secure environments
Prepare Certification and Accreditation documentation under RMF and derivative processes, including DOD 8510, JSTIG, ICD-503, and CNSSI 1253
Represent program security needs and requirements in customer meetings
Certify Cryptographic High Assurance Devices
Conduct vulnerability assessments and configure cyber defense tools
Assess security and privacy controls in embedded systems
Execute RMF steps 1–4 and develop standard Body of Evidence packages
Process A&A packages and accredit Platform IT systems
Provide DoD software selection and approval for COTS, GOTS, and FOSS
Support security engineering activities including estimates, requirements, design, testing, configuration management, and maintenance
Assist with policies and procedures for emerging security technologies
Evaluate and deliver security architecture improvements, obsolescence replacements, and vulnerability response projects
Collaborate with customers, program teams, and leadership
Perform all work 100% onsite in a lab environment

Requirements

What you’ll need

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
Strong knowledge of the job area and specialty within the discipline
Minimum of Collateral Secret security clearance required
Experience with High Assurance products, IASRD and SERD requirements
Experience configuring and using ACAS and SCC
Experience assessing security and privacy controls in embedded systems using NIST 800-53
Experience with RMF accreditation and authorization processes and BoE package development
Experience with A&A package processing
Experience with RMF accreditation of Platform IT systems
Prior or current experience with High Assurance Device certification on embedded systems
Prior or current experience with RMF A&A on embedded systems
Experience developing and implementing System Security Engineering for CPI protection throughout the System Development Lifecycle
Experience assessing systems for Critical Program Information (CPI)
Experience conducting trade studies, attack/countermeasure analysis, and Verification and Validation activities
Experience using DoD 5200.39 and NIST 800-160
Experience developing Program Protection Plans, Cybersecurity Strategies, Security Classification Guides, and System Security Engineering Plans
Experience leading small product development teams and mentoring engineers
Successful track record planning, executing, and tracking personal task assignments
Ability to operate with little supervision in diverse environments

Benefits

Comp & perks

Health and disability insurance
401(k) match
Flexible spending accounts
Employee assistance program (EAP)
Education assistance
Parental leave
Paid time off
Company-paid holidays
9/80 schedule with every other Friday off