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Network Administrator
Job
Robert Half
Irving, TX (In Person)
Full-Time
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Job Description
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.