We are looking for a Network Administrator to support and strengthen a complex enterprise network environment in DFW. This position focuses on building reliable Cisco-based infrastructure, improving connectivity across cloud and on-premises systems, and helping maintain secure, high-performing communications platforms. The ideal candidate brings strong technical depth in networking, voice, and infrastructure operations, along with the ability to resolve issues that affect critical business services. Responsibilities:• Architect, deploy, and refine Cisco network solutions spanning routing, switching, and firewall technologies to ensure dependable enterprise connectivity.• Manage SD-WAN implementation efforts and continuously improve performance, resiliency, and overall network efficiency.• Administer and support VoIP platforms, with an emphasis on maintaining stable voice services and addressing service disruptions promptly.• Oversee highly available network operations across hybrid cloud environments, including platforms integrated with Azure and on-premises infrastructure.• Work closely with cybersecurity stakeholders to apply network protection standards, strengthen access controls, and support compliance objectives.• Investigate and resolve advanced infrastructure incidents affecting business-critical systems, using a methodical and service-focused approach.• Execute lifecycle maintenance activities such as patching, hardware and software upgrades, and ongoing capacity or performance improvements.• Participate in an on-call rotation to provide timely support for urgent infrastructure events in a fast-moving operational setting.

• At least 5 years of hands-on experience managing Cisco networking environments, including routers, switches, and firewalls. • Minimum 3 years of experience working with SD-WAN technologies in an enterprise setting. • At least 3 years of VoIP administration or support experience, preferably within Cisco-based voice environments. • Solid knowledge of network architecture, LAN design, and security principles for enterprise infrastructure. • Experience supporting hybrid cloud connectivity across cloud and on-premises systems. • Proven ability to diagnose and resolve complex network and infrastructure issues with minimal supervision. • Familiarity with related infrastructure technologies such as Active Directory, Windows Server services, VMware, Nutanix, or Microsoft 365. • Cisco certifications or prior experience guiding projects or mentoring others would be considered an advantage.

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Irving, TX
onsite
Permanent / Full Time
90000 - 105000 USD / Yearly
We are looking for a Network Administrator to support and strengthen a complex enterprise network environment in DFW. This position focuses on building reliable Cisco-based infrastructure, improving connectivity across cloud and on-premises systems, and helping maintain secure, high-performing communications platforms. The ideal candidate brings strong technical depth in networking, voice, and infrastructure operations, along with the ability to resolve issues that affect critical business services. Responsibilities:• Architect, deploy, and refine Cisco network solutions spanning routing, switching, and firewall technologies to ensure dependable enterprise connectivity.• Manage SD-WAN implementation efforts and continuously improve performance, resiliency, and overall network efficiency.• Administer and support VoIP platforms, with an emphasis on maintaining stable voice services and addressing service disruptions promptly.• Oversee highly available network operations across hybrid cloud environments, including platforms integrated with Azure and on-premises infrastructure.• Work closely with cybersecurity stakeholders to apply network protection standards, strengthen access controls, and support compliance objectives.• Investigate and resolve advanced infrastructure incidents affecting business-critical systems, using a methodical and service-focused approach.• Execute lifecycle maintenance activities such as patching, hardware and software upgrades, and ongoing capacity or performance improvements.• Participate in an on-call rotation to provide timely support for urgent infrastructure events in a fast-moving operational setting.
2026-05-28T00:00:00Z

Network Administrator Job in Irving, TX | Robert Half