NETWORK ADMINISTRATOR

Quantum Research International Inc•Colorado Springs, CO

1d•$90,000 - $120,000•Onsite

About The Position

Quantum Research International, Inc. (Quantum) is seeking an experienced Network Administrator to join their team in a Sensitive Compartmented Information Facility (SCIF) environment. This role is crucial for managing and maintaining virtual and physical IT infrastructure, ensuring strict adherence to DoD cybersecurity policies and standards. Quantum supports national defense, federal civilian, and industry customers across various domains including Cybersecurity, Space Operations, Aviation Systems, Ground/Air/Missile Defense, Intelligence Programs, Experimentation and Test, Program Management, and Audio/Visual Technology Applications. While the corporate office is in Huntsville, AL, Quantum hires nationwide and internationally, with additional physical locations in Colorado Springs, CO; Crestview, FL; Orlando, FL; and Tupelo, MS. The company prides itself on delivering high-quality support to the U.S. Government and its Warfighters.

Requirements

Must possess active DoD Secret clearance with the ability to upgrade to TS/SCI
Must have experience in installing, testing, and supporting information systems and/or networks.
Must possess specific experience in administration and/or support of computer operating systems and/or network operating systems.
Must be able to communicate effectively verbally and in writing.
Must have and maintain an appropriate DoDI 8570.01-M (Information Assurance Workforce Improvement Program) certification for the appointed duty level
Solid understanding of TCP/IP networking (subnetting, routing, switching, DNS/DHCP, common protocols).
Hands-on experience managing multiple Palo Alto firewalls — security rules, policies, and zones.
Experience configuring and troubleshooting Cisco Catalyst 3850/9300 switches.
Experience with Cisco 4311 (ISR) routers.
Ability to apply STIGs to network devices and maintain compliance baselines.
Hyper-V networking: virtual switches, VLAN tagging, and virtual network adapters.
Experience upgrading Palo/Cisco devices
Work with other teams to assist and troubleshoot network related issues.
Familiarity with networking packet capture tools
Familiarity with standard TCP/UDP ports
Creating and maintaining network diagrams and documentation.

Nice To Haves

Understanding of - Analytics and providing findings in presentation.
AWS networking: VPCs, subnets, route tables, security groups, NACLs, Transit Gateway, and VPN.
Terraform / Infrastructure as Code
Familiarity with DoD/government compliance processes (audits, hardening, remediation, CTOs).
Experience with DNS manager.
Familiarity with SolarWinds SEM/Kiwi Syslog
Experience working with a CSD

Responsibilities

Manage, configure, and maintain network infrastructure in compliance with DoD cybersecurity requirements and SCIF operating standards.
Configure, administer, and troubleshoot routers, switches, firewalls, VPNs, and other network infrastructure devices.
Monitor network availability, performance, capacity, and security to ensure reliable and continuous operations.
Collaborate with the Cybersecurity Team to implement DISA STIG requirements, remediate vulnerabilities, and maintain network security compliance.
Configure and maintain network services and protocols including TCP/IP, DNS, DHCP, VLANs, routing, switching, NAT, and access control lists (ACLs).
Diagnose and resolve network connectivity, latency, routing, switching, and performance issues across classified and unclassified environments.
Administer network authentication and access controls, including Active Directory integration, RADIUS, 802.1X, PKI, and role-based access.
Configure and maintain firewalls, security policies, network segmentation, and boundary protection controls in accordance with DoD security requirements.
Support network vulnerability assessments, ACAS scans, patching, configuration management, and remediation activities.
Maintain network device configurations, firmware, software updates, backups, and recovery procedures.
Support implementation and maintenance of secure remote-access and site-to-site VPN solutions.
Perform network traffic and packet analysis using tools such as Wireshark to identify and troubleshoot network and application communication issues.
Support network infrastructure modernization, lifecycle replacement, and implementation of new network technologies.
Develop and maintain network diagrams, configuration baselines, standard operating procedures (SOPs), troubleshooting guides, and other technical documentation.
Support RMF, ATO, inspection, audit, and continuous-monitoring activities by providing required network configuration and security evidence.
Coordinate with system administrators, cybersecurity personnel, DevSecOps engineers, and external network providers to resolve infrastructure and connectivity issues.
Respond to network outages and incidents, perform root-cause analysis, and implement corrective actions to minimize operational impact.