Senior Specialist, Information Security Systems Engineer – Secret Clearance

L3Harris Technologies

. Apply systems security engineering methods, practices, and technologies to architecture, design, development, evaluation, and integration of systems and networks .

Posted 11/11/2026full-timePalm Bay • Florida • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in systems security engineering, including the application of security methods throughout the system lifecycle, and leads security assessments and compliance activities using NIST standards. Proficient in developing security documentation and implementing security policies for embedded systems.

Highest-signal resume keywords

Systems Security EngineeringNIST 800-53 ComplianceCertification and Accreditation DocumentationAnti-Tamper ExpertiseSecurity Clearance Management

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Vulnerability AnalysisEncryption TechnologySecurity Management MethodsSecurity Testing and VerificationRisk Management Framework (RMF)Configuration ManagementRequirements DevelopmentThreat AnalysisCybersecurity StrategiesDoD Software Selection

Soft Skills

LeadershipCommunicationCollaborationCustomer InteractionProblem-Solving

Tools & Technologies

ACASSCCEVMS ToolsCOTSGOTSFOSS

Certifications & Qualifications

DOD 8140 CertificationNIST 800-181NSA Type 1 Certification

Industry Keywords

DITSCAPNIACAPDCID 6/3Common CriteriaNIST 800-37Embedded SystemsCybersecurityAnti-TamperPlatform IT SystemsHigh Assurance Products

Tech Stack

Tools & technologies

Cyber SecurityTypeScript

About the role

Key responsibilities & impact

Apply systems security engineering methods, practices, and technologies to architecture, design, development, evaluation, and integration of systems and networks
Define and implement security protection needs, concerns, and requirements throughout the system lifecycle
Work with systems developers and commercial product 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
Implement policies and procedures to monitor and maintain the security environment
Prepare Certification and Accreditation documentation using DITSCAP, NIACAP, DCID 6/3, Common Criteria, and NIST 800-37
Represent program security needs, concerns, and requirements at customer meetings
Lead security and privacy control assessment activities for embedded systems using NIST 800-53
Support security engineering activities including basis of estimate development, requirements development, design, testing, configuration management, and maintenance
Assist program security with policies and procedures for emerging security technologies
Support security architecture improvement, obsolescence replacement, vulnerability response, evaluation, qualification, testing, and delivery projects
Lead Anti-Tamper activities throughout the System Development Lifecycle, including CPI assessment, trade studies, requirements, security architectures, threat analysis, and verification and validation
Serve as a subject matter expert in Anti-Tamper
Draft PPIPs, Cybersecurity Strategies, SCGs, and Anti-Tamper Plans
Interact with customers to define Anti-Tamper requirements, solutions, trade-offs, costs, implementation, system impacts, and effectiveness

Requirements

What you’ll need

Bachelor’s Degree and minimum 6 years of prior relevant experience
Graduate Degree and minimum 4 years of prior related experience
In lieu of a degree, minimum 10 years of prior related experience
Active Collateral Secret security clearance required
Ability to obtain and maintain a DOD 8140 certification (or NIST 800-181), appropriate for the position, within 6 months of start
Lead assessment activities for security and privacy controls in embedded systems using NIST 800-53
Experience leading programs through RMF accreditation and authorization processes, including RMF steps 1–4 and Body of Evidence package development
Experience with A&A package processing
Experience in RMF accreditation of Platform IT systems
Experience configuring and using ACAS and SCC
Experience with DoD software selection and approval processes for COTS, GOTS, and FOSS
Experience with security testing and verification
Experience as Control Account Manager with EVMS tools
Experience as Integrated Product Team Lead
NSA Type 1 Certification of cryptographic high assurance devices preferred
Experience with NSA High Assurance products and IASRD and SERD requirements preferred
Experience using DoD 5200.39 preferred
Experience engineering trustworthy and secure systems in accordance with NIST 800-160 preferred
Ability to obtain Top Secret clearance preferred; active TS/SCI clearance highly desired

Benefits

Comp & perks

9/80 work schedule: employees work 9 out of every 14 days, totaling 80 hours, with every other Friday off
Ability to obtain and maintain a DOD 8140 certification (or NIST 800-181), appropriate for the position, within 6 months of start
Reasonable accommodation for individuals with disabilities