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Lead Systems Administrator
L3Harris Technologies. Serve as the dedicated systems administrator for Waco’s secure, isolated lab and air-gap environments .
Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates extensive experience in systems administration, particularly with Red Hat-based Linux and Windows environments, while ensuring security compliance and operational integrity in isolated lab settings. Proficient in managing identity and access administration, system hardening, and supporting secure development infrastructures.
Highest-signal resume keywords
Linux AdministrationWindows AdministrationActive Directory ManagementSystem HardeningSecurity+ Certification
ATS Keywords
Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills
Shell ScriptingNetwork ServicesStorage ServicesSTIG ImplementationVulnerability RemediationDevOps PlatformsCI/CD PipelinesVirtualizationMonitoring ServicesBackup Solutions
Soft Skills
Incident ResponseVendor CoordinationDocumentation SkillsCollaboration with Security Stakeholders
Tools & Technologies
AnsiblePuppetChefGitLabGitHubSVNFreeIPALDAPKerberosSMB/Samba
Certifications & Qualifications
Security+ Certification
Industry Keywords
CMMCATOContinuous MonitoringRegulated EnvironmentsDefense Sector
Tech Stack
Tools & technologiesAnsibleChefCloudDistributed SystemsDNSLinuxNFSPuppetShell ScriptingSubversion
About the role
Key responsibilities & impact- Serve as the dedicated systems administrator for Waco’s secure, isolated lab and air-gap environments
- Administer Red Hat-based Linux servers and workstations and Windows servers and workstations
- Provision, troubleshoot, patch, secure, configure, and provide lifecycle support for systems across secure lab and isolated network environments
- Manage privilege, identity, and access administration
- Build and maintain DNS, DHCP, NFS, automounts, SMB/Samba, Windows domain services, Active Directory, FreeIPA or LDAP, NTP, virtualization, storage, backup, and monitoring services
- Document and maintain recoverable infrastructure services for air-gap environments
- Support software engineers with secure development infrastructure, controlled remote access, standardized images, source-code platforms, and DevOps platforms
- Translate engineering needs into supportable services and clear ownership boundaries
- Partner with information security stakeholders to harden and audit systems
- Implement or sustain STIG baselines, patching, vulnerability remediation, endpoint protection, centralized logging, security-tool integration, and evidence for CMMC, ATO, continuous monitoring, and program accreditation
- Maintain asset and service inventories, ownership records, network and configuration diagrams, standard operating procedures, change records, and audit artifacts
- Report open gaps, owners, aging, and next actions
- Provide on-site operational response for incidents, outages, recovery activities, vendor coordination, emergency coverage, and closeout actions
- Help stabilize local support for the Waco secure-area environment and progress it toward an accredited sustainment model
Requirements
What you’ll need- Bachelor’s Degree in Computer Science, Information Technology, or a related field and minimum 9 years of prior relevant experience
- Graduate Degree in Computer Science, Information Technology, or a related field and minimum 7 years of prior related experience
- In lieu of a degree, minimum 13 years of prior related experience in systems administration
- Hands-on experience with Linux administration on Red Hat-based distributions
- Experience with Windows administration
- Experience with Active Directory
- Experience with shell scripting
- Experience with network and storage services
- Experience with system hardening
- Experience supporting secure environments
- Preferred: experience with Ansible, AWX, Puppet, or Chef
- Preferred: experience with Active Directory, FreeIPA, LDAP, Kerberos, or IDM
- Preferred: source code platform administration using GitLab, GitHub, or SVN
- Security+ or equivalent security certification strongly desired
- Experience with STIG implementation, audit readiness, Windows domain operations, and cross-functional support in defense or regulated environments highly valuable
- Familiarity with CI/CD pipelines, DevOps platforms, log analysis, metrics and monitoring, virtualization, multi-operating-system environments, cloud platforms, and security-focused troubleshooting in distributed systems
Benefits
Comp & perks- 9/80 work schedule: employees work 9 out of every 14 days, totaling 80 hours, with every other Friday off
- Reasonable accommodation for individuals with disabilities