Lead, Information Security Systems Engineer – Secret Clearance

L3Harris Technologies

. Apply systems security engineering methods, practices, and technologies to architect, design, develop, evaluate, and integrate systems and networks .

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

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in systems security engineering, including the application of security methods and technologies throughout the system lifecycle. Proficient in leading security assessments, implementing security architectures, and preparing necessary documentation for compliance with established standards.

Highest-signal resume keywords

Systems Security EngineeringRisk Management Framework (RMF) AccreditationNIST 800-53 ComplianceVulnerability Assessment ToolsAnti-Tamper Development

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Encryption TechnologyVulnerability AnalysisSecurity Management MethodsSecurity Testing and VerificationConfiguration ManagementCybersecurity StrategiesProgram Protection Implementation PlansThreat AssessmentVerification and Validation ActivitiesSecurity Architecture Development

Soft Skills

Customer InteractionLeadershipCommunication

Tools & Technologies

ACASSCCEarned Value Management System (EVMS)COTSGOTSFOSS

Certifications & Qualifications

Active Collateral Secret Security ClearanceDOD 8140 CertificationNSA Type 1 Certification

Industry Keywords

DITSCAPNIACAPDCID 6/3Common CriteriaNIST 800-37NIST 800-160DoD 5200.39Critical Program InformationCyber DefenseEmbedded Systems

Tech Stack

Tools & technologies

Cyber SecurityTypeScript

About the role

Key responsibilities & impact

Apply systems security engineering methods, practices, and technologies to architect, design, develop, evaluate, and integrate systems and networks
Work throughout the system lifecycle with customers to define and implement security protection needs, concerns, and requirements
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 multiple security methods into a cohesive system security perimeter and environment
Implement policies and procedures to monitor and maintain secure environments
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 assessment activities for security and privacy controls in embedded systems using NIST 800-53
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 policies and procedures for emerging security technologies
Support evaluation, qualification, testing, and delivery of security architecture improvement, obsolescence replacement, and vulnerability response projects
Lead Anti-Tamper development and implementation throughout the System Development Lifecycle
Assess systems for Critical Program Information and conduct trade studies
Develop Anti-Tamper requirements and implement security architectures
Assess threats through attack/countermeasure analysis
Conduct Verification and Validation activities and serve as an Anti-Tamper subject matter expert
Draft Program Protection Implementation Plans, Cybersecurity Strategies, Security Classification Guides, and Anti-Tamper Plans
Interact with customers to define Anti-Tamper requirements, solutions, trades, costs, implementation, system impacts, and effectiveness
Work 100% onsite in a lab environment

Requirements

What you’ll need

Bachelor’s Degree and minimum 9 years of prior relevant experience; or Graduate Degree and minimum 7 years of prior related experience; or, in lieu of a degree, minimum 13 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
Experience leading programs through Risk Management Framework (RMF) accreditation and authorization processes, including RMF steps 1–4
Experience with A&A package processing
Experience in RMF accreditation of Platform IT (PIT) systems
Experience configuring and using ACAS and SCC cyber defense and vulnerability assessment tools
Experience in DoD software selection and approval processes for COTS, GOTS, and FOSS
Experience with security testing and verification
Experience as Control Account Manager (CAM) with Earned Value Management System (EVMS) tools
Experience as Integrated Product Team Lead (IPTL)
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 in identifying and protecting critical program information 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
Ability to obtain Top Secret clearance preferred
Active TS/SCI clearance highly desired
Reasonable accommodation for individuals with disabilities