Linux Systems Administrator / Network Administrator

Job Description

Job Description

Linux Systems Administrator / Network Administrator

Location: Harrisburg, PA
Schedule: Full-time, onsite
Compensation: $80,000-$90,000 annually

About the Role

A leading technology-driven organization in Harrisburg, PA is seeking a hands-on Linux Systems Administrator / Network Administrator to support a mixed enterprise infrastructure environment. This role requires a strong Linux administrator first — someone who can confidently troubleshoot Linux/RHEL servers , review system performance, manage services, understand permissions, review logs, and support production Linux systems.

This position also includes support across Windows Server , VMware , Active Directory , Office 365 , DNS , DHCP , Group Policy , LAN/WAN , VPNs , firewalls, switches, monitoring tools, and general enterprise infrastructure.

The ideal candidate is not just someone who has “used Linux.” This person should have real hands-on experience administering Linux systems in a business or enterprise environment.

What You’ll Do

• Administer, maintain, and troubleshoot Linux servers , with strong preference for RHEL / Red Hat Enterprise Linux
• Troubleshoot Linux performance issues involving CPU , memory , disk space , running processes, services, and system logs
• Use Linux commands and tools such as top , df -h , free -m , ps , systemctl , journalctl , tail , chmod , and chown
• Support Linux user permissions, file ownership, service failures, patching, upgrades, and server/application troubleshooting
• Maintain and support Windows Server environments
• Support virtualized infrastructure, including VMware
• Administer Active Directory , Office 365 , Exchange , DNS , DHCP , and Group Policy
• Troubleshoot LAN/WAN , VPN , VoIP, switches, firewalls, routing, and network connectivity
• Support enterprise applications, infrastructure tools, SQL Server, Citrix, and monitoring platforms where applicable
• Assist with patching, backups, upgrades, system hardening, documentation, and performance improvements
• Use monitoring tools such as SolarWinds , Zabbix , BMC Patrol , Tivoli , or similar platforms
• Participate in incident response, root cause analysis, infrastructure projects, and continuous improvement efforts
• Support occasional field work and participate in a 24/7 on-call rotation

Required Qualifications

• 5+ years of hands-on systems and network administration experience
• Strong hands-on Linux administration experience
• Experience supporting RHEL / Red Hat Enterprise Linux strongly preferred
• Ability to troubleshoot Linux servers using logs, services, permissions, processes, disk, CPU, and memory checks
• Experience with Windows Server
• Experience with VMware
• Experience with Active Directory , Office 365 , Exchange , DNS , DHCP , and Group Policy
• Network administration experience with LAN/WAN , VPN , switches, firewalls, VoIP, and connectivity troubleshooting
• Scripting or automation experience with Bash , PowerShell , VBScript , or similar tools
• Strong troubleshooting, documentation, and communication skills
• Must be able to work fully onsite in Harrisburg, PA

Preferred Qualifications

• Experience with Cisco and/or Fortinet
• Experience with Citrix
• Experience with SQL Server
• Experience with enterprise monitoring tools such as SolarWinds , Zabbix , BMC Patrol , or Tivoli
• Experience supporting regulated, high-availability, or security-sensitive environments
• Experience with system hardening, audit support, vulnerability remediation, and incident response

Why This Role

• Competitive salary of $80K-$90K
• Stable full-time opportunity
• Strong benefits package
• Excellent PTO and paid holidays
• 401(k) match
• Medical, dental, and vision coverage
• Company-paid life insurance
• Hands-on infrastructure role with Linux, systems, networking, virtualization, and security exposure
• Opportunity to support critical enterprise technology in a stable environment