IT Network Administrator - Dallas Regional Office

Dominium•Dallas, TX

18d

About The Position

The IT Network Administrator administers, secures, monitors, and optimizes Dominium’s network and related infrastructure across corporate and branch office locations. The role supports routing, switching, firewalls, SD-WAN, cloud networking, servers, and connectivity services to ensure infrastructure availability, performance, security, and compliance. It performs advanced troubleshooting, manages patching and vulnerability response, develops automation to improve operational efficiency, and serves as an escalation resource for technical support staff. The position partners with internal stakeholders to design, implement, document, and support infrastructure solutions that meet business and operational needs.

Requirements

Bachelor’s degree in information technology, computer science, or a related field, or an equivalent combination of education and relevant experience.
At least four years of progressive information technology experience in network administration, infrastructure support, server administration, and security operations.
Experience administering enterprise network and infrastructure services, including DNS, DHCP, VPN, LAN, WAN, Wi-Fi, and VoIP.
Experience with routing, switching, and network segmentation technologies, including VLANs, subnetting, OSPF, BGP, and EIGRP.
Experience configuring and administering firewalls, NAT/PAT, IPSec VPNs, patching, vulnerability response, identity and access management, and related network security controls.
Experience using network monitoring and performance management tools to assess network health, availability, capacity, and performance.
Strong analytical and problem-solving skills, including the ability to evaluate complex technical issues and implement effective solutions.
Effective communication, organization, collaboration, and customer service skills; ability to manage competing priorities, work independently, and communicate technical information to people with varying levels of technical knowledge.
Ability to adapt to and quickly learn new technologies, systems, and processes while maintaining high standards for system reliability, security, and documentation.

Nice To Haves

Experience with Cisco and Meraki network equipment, Panorama, Microsoft Defender for Endpoint, Red Canary Managed Detection and Response, Okta, Microsoft Entra ID, Active Directory, VMware, Cisco Umbrella, Microsoft 365, and backup and recovery platforms.
Experience with Microsoft Azure networking, SD-WAN, and automation or scripting tools such as PowerShell and Python.
Knowledge of the National Institute of Standards and Technology Cybersecurity Framework or other applicable security and compliance standards.

Responsibilities

Administer, maintain, and support enterprise network infrastructure, including LAN, WAN, Wi-Fi, VPN, VoIP, and related connectivity services across corporate and branch office environments.
Configure and maintain routing, switching, and SD-WAN infrastructure, including VLANs, subnetting, dynamic routing protocols, network segmentation, redundancy, performance optimization, and failover.
Administer firewall policies, rules, NAT/PAT, IPSec VPN configurations, and centralized firewall management platforms.
Support cloud and hybrid networking infrastructure, including Azure virtual networks, ExpressRoute, VPN gateways, Azure Virtual Desktop environments, and connectivity between on-premises and cloud resources.
Monitor network health, availability, capacity, and performance; identify issues proactively and implement corrective improvements.
Troubleshoot complex network, server, security, performance, availability, and infrastructure issues and serve as an escalation resource.
Support network and infrastructure security technologies, including endpoint protection, managed detection and response, identity and access management, DNS security, and related security platforms.
Identify and respond to vulnerabilities, CVEs, malware, and other security threats affecting network and infrastructure systems.
Manage patches, firmware updates, and other system updates for network devices, servers, and related infrastructure.
Develop and maintain scripts and automation tools for network configuration, monitoring, reporting, and recurring operational activities.
Collaborate with stakeholders to define technical requirements, evaluate solutions, assess change impacts, and design and implement approved network and infrastructure changes.
Maintain documentation for system configurations, infrastructure changes, troubleshooting procedures, operational standards, security controls, and disaster recovery processes.
Participate in business continuity and disaster recovery planning and testing.
Perform other duties and special projects as assigned.