Senior Specialist, System Administration

L3Harris Technologies

. Install, configure, and maintain Linux servers and associated software in a multi-platform environment .

Posted 9/21/2026full-timeGreenville • Texas • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Linux and Windows Server management, including installation, configuration, and performance optimization. Proficient in automation, cloud platforms, and security protocols, with a strong focus on compliance and system reliability.

Highest-signal resume keywords

Linux Server ManagementWindows Server ManagementCloud Platforms (AWS, Azure, Google Cloud)Automation and Configuration Management (Ansible, Puppet, Chef)CompTIA Security+ Certification

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Linux Server ManagementWindows Server ManagementAutomation Scripting (Bash, Python, PowerShell)Virtualization Technologies (vSphere, KVM, Proxmox)Kubernetes Deployment and DebuggingInfrastructure-as-Code (Terraform, Ansible)CI/CD Tooling (GitLab CI, GitHub Actions)Disaster Recovery ProcessesMonitoring ToolsNetworking (SDN, NSX-T, Calico)

Soft Skills

Problem-SolvingVerbal CommunicationWritten CommunicationMentoringCollaboration

Tools & Technologies

AnsiblePuppetChefTerraformKubernetesAWSAzureGoogle CloudMonitoring ToolsBackup/Recovery Solutions

Certifications & Qualifications

CompTIA Security+ CertificationLPICRHCSACompTIA Linux+Microsoft Certified: Azure Administrator AssociateVMware Certified Professional (VCP)

Industry Keywords

System Performance MonitoringSecurity ProtocolsCompliance StandardsDocumentationDistributed Systems

Tech Stack

Tools & technologies

AnsibleAWSAzureChefCloudDistributed SystemsKubernetesLinuxPerlPuppetPythonTerraformVMware

About the role

Key responsibilities & impact

Install, configure, and maintain Linux servers and associated software in a multi-platform environment
Install, configure, and maintain Windows Server infrastructure and integrate it with Linux systems
Monitor system performance and troubleshoot issues to ensure high availability and optimal performance
Implement and oversee security protocols, conduct system backups, and maintain data recovery processes
Collaborate with network staff to ensure reliable operation of software and systems
Create and maintain documentation on system configuration, mapping, processes, and service records
Review system and application logs and verify completion of scheduled jobs such as backups
Automate routine tasks using Bash, Python, or Perl
Provide technical support and guidance to users and team members
Ensure compliance with internal policies and regulatory standards
Deliver adaptable support across multiple programs and locations
Address foundational networking tasks and troubleshoot end-user issues

Requirements

What you’ll need

Active CompTIA Security+ certification
Active security clearance
Bachelor’s Degree and minimum 6 years of prior relevant experience, or Graduate Degree and minimum 4 years of prior related experience, or in lieu of a degree, minimum 10 years of prior related experience
Experience with virtualization technologies and container orchestration tools
Proficiency in cloud platforms (AWS, Azure, or Google Cloud)
Proficiency in automation and configuration management using tools like Ansible, Puppet, or Chef
Expertise in Windows Server management, including configuration, patching, and performance optimization
Advanced scripting and automation skills using PowerShell, Bash, or Python
Experience with virtualization platforms (vSphere, KVM, Proxmox, etc.)
Hands-on Kubernetes experience, including deploying and debugging workloads
Familiarity with SDN and modern networking (NSX-T, Calico, Cilium, load balancers, TLS)
Proficiency with infrastructure-as-code (Terraform, Ansible) and automation scripting
Experience with CI/CD tooling and Git-based workflows (GitLab CI, GitHub Actions, etc.)
Understanding of identity and access management (OIDC, OAuth2, Keycloak or equivalent)
Experience running stateful or platform components in Kubernetes, including object storage, databases, and registries
Strong understanding of distributed systems concepts, observability, and troubleshooting
Familiarity with or knowledge of disaster recovery software, exercises, and actual events
Exceptional problem-solving, verbal, and written communication skills
Ability to work independently and collaboratively, mentor junior team members, and adapt to emerging technologies
Flexibility to participate in on-call rotations and perform after-hours work for critical incidents
A professional certification in Linux administration is preferred; LPIC, RHCSA, or CompTIA Linux+ are highly desirable
Familiarity with monitoring tools, backup/recovery solutions, and database systems is preferred
Microsoft Certified: Azure Administrator Associate and VMware Certified Professional (VCP) are preferred additional skills

Benefits

Comp & perks

9/80 regular schedule with every other Friday off, or 5/8 Monday–Friday, first shift
Reasonable accommodation for individuals with disabilities