Network / Security Administrator

Progressive IT; Irving (TX); On-site; USD 70,000 - 110,000; Full time

Job summary

Progressive IT is seeking a Network Administrator / Security Administrator to help maintain and secure our network, server, and endpoint infrastructure. You’ll work with senior IT staff and vendors on daily operations, troubleshooting, security controls, and compliance support.

This role covers LAN/WAN, VPN, Cisco devices, Windows Server/AD, and auditing against frameworks like NIST 800-171 and ISO 27001.

Qualifications

• Associate degree or equivalent experience in IT, CS, or cybersecurity.
• 3–5 years in network administration and/or cybersecurity.
• Hands-on Cisco routing, switching, and firewall experience.
• Familiarity with Windows Server and Active Directory.
• Strong troubleshooting, analytical, and communication skills.

Responsibilities

• Maintain LAN/WAN/wireless/VPN connectivity; configure switches, routers, firewalls, APs; troubleshoot performance issues and outages; keep network documentation current
• Monitor security alerts, support endpoint protection, vulnerability scanning, and patch management; assist with access reviews and incident response
• Manage AD/M365 user accounts; support server maintenance, backups, and disaster recovery; troubleshoot Windows systems
• Support compliance efforts (CMMC, NIST 800-171, ISO 27001) and assist with audits, documentation, and security training

Skills

Network administration

Troubleshooting

Analytical thinking

Communication skills

Security awareness

Education

Associate degree in IT/CS/Cybersecurity or equivalent experience

Tools

Cisco routing & switching

Firewall management

PowerShell scripting

Windows Server / Active Directory

EDR/SIEM familiarity

Job description

Network Administrator / Security Administrator

We\'re seeking a Network/Security Administrator to help maintain and secure our network, server, and endpoint infrastructure. You\'ll work alongside senior IT staff and vendors on daily operations, troubleshooting, security controls, and compliance support.

Key Responsibilities

• Maintain LAN/WAN/wireless/VPN connectivity; configure switches, routers, firewalls, and APs; troubleshoot performance issues and outages; keep network documentation current


• Monitor security alerts, support endpoint protection, vulnerability scanning, and patch management; assist with access reviews and incident response


• Manage AD/M365 user accounts; support server maintenance, backups, and disaster recovery; troubleshoot Windows systems


• Support compliance efforts (CMMC, NIST 800-171, ISO 27001) and assist with audits, documentation, and security training

Required Qualifications

• Associate degree in IT/CS/Cybersecurity or equivalent experience


• 3-5 years in network administration and/or cybersecurity


• Hands‑on Cisco routing/switching/firewall experience


• Familiarity with Windows Server and Active Directory


• Strong troubleshooting, analytical, and communication skills

Preferred Qualifications

• Experience with Trend Vision One or similar EDR/SIEM platforms


• Microsoft 365/Azure and Active Directory proficiency


• Knowledge of CMMC Level 2, NIST 800-171, or similar frameworks


• PowerShell scripting

Technical Environment

Technical Environment: Cisco (switches, routers, firewalls, Umbrella), VLANs/VPNs/DHCP/DNS/TCP-IP, 802.1x/ISE, Windows Server/AD, M365, EDR/vulnerability management tools, backup/DR systems, PowerShell, network monitoring tools