Manager, Information Security – Systems Engineer

L3Harris Technologies

. Lead the Accreditation, Authorization and Audit team in managing and implementing secure systems .

Posted 11/3/2026full-timeGreenville • Texas • United StatesSeniorLeadWebsite

Core Competencies

Role fit

Core Competencies

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

Demonstrates expertise in leading security engineering initiatives, ensuring compliance with relevant standards, and managing the Authority to Operate (ATO) processes. Proficient in developing security solutions and fostering collaboration with engineering teams to meet security objectives.

Highest-signal resume keywords

ISSE ExperienceCompTIA Sec+ CertificationRisk Management Framework (NIST 800-53)Authority to Operate (ATO) ProcessesXacta or eMASS Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Security EngineeringVulnerability ManagementNetworkingApplication HardeningPOA&M ManagementA&A DocumentationAudit Program DevelopmentProcess ImprovementRequirements ManagementLinux Audit and Logging

Soft Skills

LeadershipCommunicationInfluencingTeam Consensus BuildingRelationship Cultivation

Tools & Technologies

XactaEMASSActive DirectoryLDAPCoverityFortify

Certifications & Qualifications

CompTIA Sec+CySACASPCISSP

Industry Keywords

AccreditationAuthorizationAuditComplianceRisk Management FrameworkNIST PublicationsSecurity Relevant ChangesAssessment and AuthorizationGovernment Security StandardsTS/SCI Clearance

Tech Stack

Tools & technologies

LinuxTypeScript

About the role

Key responsibilities & impact

Lead the Accreditation, Authorization and Audit team in managing and implementing secure systems
Ensure the security of information systems, networks, and data throughout their lifecycle
Lead security engineering activities and develop and implement security solutions
Ensure compliance with relevant standards and regulations
Work closely with Government customers and engineering development teams to define and implement security protection needs, concerns, and requirements
Support obtaining an Authority to Operate (ATO)
Communicate within and outside the organization to influence leadership to accept new practices, approaches, and concepts
Track assigned systems for Assessment and Authorization status and oversee accreditation and re-accreditation actions
Establish a rigorous audit program for assigned programs
Improve existing processes or establish new processes and systems
Cultivate relationships with engineering teams to determine implementation paths that meet security objectives
Forecast systems engineering manpower needs based on program and potential demand forecasts
Establish training requirements for continued team professional development
Create workforce and staffing plans
Socialize ideas, make recommendations, and gain team consensus

Requirements

What you’ll need

Ability to obtain a US TS/SCI security clearance
Bachelor’s Degree and minimum 9 years of prior ISSE experience, or Graduate Degree and minimum 7 years of prior ISSE experience, or in lieu of a degree, minimum 13 years of prior ISSE experience
CompTIA Sec+ certification
Demonstrated experience leading and establishing guidance and accountability
Experience with Xacta or eMASS
Demonstrated understanding of Risk Management Framework processes and vulnerability management and compliance best practices
Demonstrated experience with Risk Management Framework based on NIST 800-53 documentation
Demonstrated experience overseeing ATO (Authority to Operate) processes
Demonstrated experience developing and managing POA&Ms associated with A&A processes
Demonstrated experience authoring and updating A&A body of evidence (BOE) documentation and Security Relevant Changes
Demonstrated understanding of networking
Preferred: Requirements Management
Preferred: Proposal Development
Preferred: Linux audit and logging system architecture
Preferred: Directory services, including Active Directory and LDAP
Preferred: Computer networking and familiarity with NIST publications
Preferred: Application hardening through code scanning with tools such as Coverity/Fortify and mitigating findings
Preferred certifications: Sec+, CySA, CASP, CISSP
Preferred: TS/SCI and CI Poly

Benefits

Comp & perks

9/80 work schedule: employees work 9 out of every 14 days, totaling 80 hours, with every other Friday off
10% travel based on business needs
Professional development and team training opportunities
Reasonable accommodation for individuals with disabilities