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Systems Administrator
L3Harris Technologies. Administer, configure, monitor, and troubleshoot Red Hat/CentOS Linux systems in secure, mission-focused environments .
Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates expertise in administering and managing Red Hat/CentOS Linux systems and AWS GovCloud/C2S infrastructure, with a strong focus on security compliance and system performance monitoring. Proficient in implementing DoD security standards and coordinating with cybersecurity teams to ensure operational reliability.
Highest-signal resume keywords
Red Hat/CentOS Linux AdministrationAWS GovCloud/C2S ManagementDoD Security Standards ComplianceVulnerability Identification and RemediationSystem Performance Monitoring
ATS Keywords
Tailor your resumeApplicant Tracking System Keywords
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Hard Skills
Linux System AdministrationAWS Cloud Infrastructure ManagementAutomation ToolsVirtualization TechnologiesJBoss Services SupportVulnerability RemediationConfiguration ManagementTechnical DocumentationIncident Response CoordinationAudit Readiness
Soft Skills
CollaborationProblem-SolvingCommunication
Tools & Technologies
Automation ToolsVirtualization TechnologiesPKIOAuthDocker
Certifications & Qualifications
Top Secret/SCI ClearanceCCNA-SecuritySecurity+ CE
Industry Keywords
DoD 8570.01-M IAT Level 2RMF ControlsPOA&M TrackingSTIGsCybersecurity Policies
Tech Stack
Tools & technologiesAWSCloudCyber SecurityDockerLinuxMicroservices
About the role
Key responsibilities & impact- Administer, configure, monitor, and troubleshoot Red Hat/CentOS Linux systems in secure, mission-focused environments
- Deploy and manage AWS GovCloud/C2S cloud infrastructure using automation tools and virtualization technologies
- Operate as an AWS Cloud Systems Administrator supporting and maintaining JBoss-based services
- Implement and sustain system hardening using DoD security standards, STIGs, and organizational cybersecurity policies
- Perform vulnerability identification and remediation to support RMF controls, POA&M tracking, and audit readiness
- Monitor system performance, availability, and operational health to ensure mission-system reliability and continuity
- Troubleshoot and resolve software, operating-system, and access-related issues according to security procedures
- Maintain system configurations, change records, and technical documentation for configuration management and compliance inspections
- Coordinate with cybersecurity, network, and program teams on accreditation activities, incident response, and secure system operations
- Travel locally from L3Harris to Patrick SFB as needed
Requirements
What you’ll need- Bachelor’s Degree with a minimum of 4 years of relevant experience, or Graduate Degree with a minimum of 2 years of relevant experience, or in lieu of a degree, a minimum of 8 years of prior related experience
- Top Secret/SCI Clearance
- DoD 8570.01-M IAT Level 2 Required Professional Certifications: CCNA-Security, Security+ CE, or higher certification
- Experience administering, configuring, monitoring, and troubleshooting Red Hat/CentOS Linux systems
- Experience deploying and managing AWS GovCloud/C2S cloud infrastructure
- Experience with automation tools and virtualization technologies
- Experience supporting and maintaining JBoss-based services
- Knowledge of DoD security standards, STIGs, and organizational cybersecurity policies
- Experience with vulnerability identification and remediation, RMF controls, POA&M tracking, and audit readiness
- Experience with system performance, availability, and operational health monitoring
- Experience troubleshooting software, operating system, and access-related issues
- Experience maintaining system configurations, change records, and technical documentation
- Ability to coordinate with cybersecurity, network, and program teams in classified or controlled environments
- Preferred: experience with PKI and/or OAuth authentication models
- Preferred: experience integrating, securing, and administering cross-domain systems
- Preferred: experience integrating, securing, and administering microservices and containers such as Docker
Benefits
Comp & perks- 9/80 work schedule: employees work 9 out of every 14 days, totaling 80 hours, with every other Friday off
- Local travel from L3Harris to Patrick SFB as needed
- Reasonable accommodation support for individuals with disabilities