DoD SCIF Network Administrator

Quantum-Research-International,-Inc; Colorado Springs (CO); On-site; USD 90,000 - 120,000; Full time

Job summary

Quantum Research International, Inc. seeks a Network Administrator to join our SCIF environment in Colorado Springs. You will manage and secure DoD network infrastructure, including VPNs, VLANs, and firewalls, while ensuring compliance with DISA STIGs and DoD policies.

The role requires active DoD Secret clearance (TS/SCI upgrade potential) and hands-on experience with Palo Alto firewalls, Cisco switches/routers, and TCP/IP. You will document architectures and support RMF/ATO activities.

Qualifications

• Must possess active DoD Secret clearance with the ability to upgrade to TS/SCI.
• Experience installing, testing, and supporting information systems and/or networks.
• Experience administering computer/ network operating systems; strong written and verbal communication.
• Must have and maintain DoDI 8570.01-M certification for the appointed duty level.
• Solid understanding of TCP/IP networking (subnetting, routing, switching, DNS/DHCP).
• Hands-on experience managing Palo Alto firewalls — security rules, policies, and zones.
• Experience configuring Cisco Catalyst 3850/9300 switches.
• Experience with Cisco 4311 routers.
• Ability to apply STIGs to network devices and maintain compliance baselines.
• Hyper-V networking: virtual switches and VLAN tagging.

Responsibilities

• Manage, configure, and maintain network infrastructure in DoD SCIF environments.
• Configure, administer, and troubleshoot routers, switches, firewalls, VPNs, and related devices.
• Monitor network availability, performance, capacity, and security for reliable operations.
• Collaborate with Cybersecurity Team to implement DISA STIG requirements and remediate vulnerabilities.
• Configure network services including TCP/IP, DNS, DHCP, VLANs, routing, NAT, and ACLs.
• Diagnose and resolve connectivity, latency, and performance issues across classified environments.
• Administer network authentication and access controls (AD, RADIUS, 802.1X, PKI).
• Maintain firewall rules, segmentation, and boundary protections per DoD requirements.
• Support vulnerability assessments, patching, configuration management, and remediation.
• Maintain device configurations, firmware, backups, and recovery procedures.
• Support secure remote-access and site-to-site VPNs.
• Perform packet analysis with tools like Wireshark to troubleshoot issues.
• Develop network diagrams, SOPs, and troubleshooting guides.

Skills

DoD Networking

Troubleshooting

Network Security

Active Directory

Documentation

Tools

Palo Alto Firewalls

Cisco Switches

Cisco Routers

Wireshark

Terraform

Job description

Quantum Research International, Inc. seeks a Network Administrator to join our SCIF environment in Colorado Springs. You will manage and secure DoD network infrastructure, including VPNs, VLANs, and firewalls, while ensuring compliance with DISA STIGs and DoD policies.

The role requires active DoD Secret clearance (TS/SCI upgrade potential) and hands-on experience with Palo Alto firewalls, Cisco switches/routers, and TCP/IP. You will document architectures and support RMF/ATO activities.