Secure Enterprise Network & Systems Administrator

Air Combat Effectiveness Consulting Group (ACE Group), LLC; Hooksett (NH); On-site; USD 70,000 - 100,000; Full time

Job summary

Air Combat Effectiveness Consulting Group, LLC is seeking a diligent Network & Systems Administrator to maintain enterprise servers and networks, troubleshoot connectivity, and support DoD-compliant environments. You will manage domain, LAN, WAN, and wireless networks while upgrading systems and ensuring stable performance.

The role requires hands-on IT administration, knowledge of TCP/IP, VPNs, and security controls, plus experience with Cisco/Juniper/Ubiquiti/Meraki gear.

Qualifications

• CompTIA Security+ certification required.
• 2–5 years of hands-on IT system administration or network support.
• Strong understanding of TCP/IP, DNS, DHCP, VPN, VLANs, routing and switching.
• Experience with Cisco, Juniper, Ubiquiti and Meraki hardware.
• Familiarity with firewalls, ACLs and secure network configuration.
• Ability to interpret and maintain network diagrams and documentation.

Responsibilities

• Monitor, maintain, and troubleshoot Domain, LAN, WAN, and wireless networks.
• Install, configure, and support server and network hardware (DCs, switches, routers, firewalls, APs).
• Support secure network environments and RBAC; align with RMF requirements.
• Assist with system and network upgrades, patching, and modernization efforts.
• Diagnose and resolve connectivity, performance, and hardware issues.
• Perform routine administration, backups, and documentation.
• Support VoIP systems, network cabling, and infrastructure components.
• Collaborate with IT and cybersecurity teams to support mission critical operations.
• Maintain network asset documentation and change logs.
• Ensure compliance with DoD security standards and cybersecurity best practices.

Skills

IT admin experience

Network troubleshooting

TCP/IP/DNS/DHCP

VPN, VLANs, routing

Documentation

2–5 years hands-on IT admin

Education

CompTIA Security+ certification

Tools

Cisco gear

Juniper gear

Ubiquiti gear

Meraki gear

Job description

Air Combat Effectiveness Consulting Group, LLC is seeking a diligent Network & Systems Administrator to maintain enterprise servers and networks, troubleshoot connectivity, and support DoD-compliant environments. You will manage domain, LAN, WAN, and wireless networks while upgrading systems and ensuring stable performance.

The role requires hands-on IT administration, knowledge of TCP/IP, VPNs, and security controls, plus experience with Cisco/Juniper/Ubiquiti/Meraki gear.