Senior Network & Security Administrator (Hybrid/Cloud)

Dominium Management Services; Dallas (TX); On-site; USD 90,000 - 120,000; Full time

Job summary

Dominium is seeking an IT Network Administrator to secure, monitor, and optimize our network and related infrastructure across corporate and branch locations in Dallas and beyond.

You will support routing, switching, firewalls, SD-WAN, cloud networking, servers, and connectivity services while ensuring availability, performance, and security. Collaboration with internal stakeholders is essential.

Qualifications

• Bachelor's in IT/CS or equivalent experience.
• 4+ years in network administration, infra support, server and security ops.
• Experience with DNS, DHCP, VPN, LAN, WAN, Wi‑Fi, VoIP.
• Routing, switching, VLANs, OSPF/BGP/EIGRP knowledge.
• Firewall configuration and security controls.
• Experience with monitoring tools for network health.
• Azure networking, SD‑WAN, automation/Scripting preferred.

Responsibilities

• Administer and support enterprise network infrastructure across sites.
• Configure routing, switching, and SD-WAN; manage VLANs and subnetting.
• Manage firewall policies, NAT/PAT, IPSec VPNs; central management.

Skills

Network administration

Analytical skills

Communication

Independent work

Documentation

Education

Bachelor's degree in IT/CS

Tools

Cisco Meraki

Azure networking

PowerShell

Python

Okta

Job description

Dominium is seeking an IT Network Administrator to secure, monitor, and optimize our network and related infrastructure across corporate and branch locations in Dallas and beyond.

You will support routing, switching, firewalls, SD-WAN, cloud networking, servers, and connectivity services while ensuring availability, performance, and security. Collaboration with internal stakeholders is essential.