Senior Network Administrator

About the role

Texas State University operates a large, heterogeneous network environment supporting academic, administrative, residential, research, and campus life services. The network includes equipment and platforms from multiple manufacturers, including Cisco, Juniper, HP/Aruba, and Ruckus Wireless. The team emphasizes reliable service delivery, standards-based design, operational consistency, security, documentation, and continuous improvement.

Responsibilities

• Design, administer, maintain, and troubleshoot enterprise network infrastructure, including campus routing and switching, wireless, data center networks, network fabrics, WAN/SD-WAN, and related services.
• Support network security and access control platforms, including Cisco ISE, network segmentation, authentication/authorization policies, and related security integrations.
• Diagnose and resolve complex network incidents affecting wired, wireless, data center, WAN, and security services.
• Lead and support network infrastructure projects from planning through implementation, including design, change coordination, testing, documentation, and operational handoff.
• Develop and maintain network standards, diagrams, procedures, configuration templates, and operational documentation.
• Monitor network performance, availability, capacity, and reliability; identify trends and recommend improvements.
• Automate network operations using scripting, APIs, configuration management tools, monitoring platforms, and AI-assisted workflows where appropriate.
• Provide technical leadership, mentorship, and vendor coordination; participate in a shared after-hours on-call rotation, currently one week every six weeks.

Requirements

• Five years of professional experience in network administration, network engineering, or closely related enterprise network infrastructure work.
• Professional experience administering enterprise routing and switching infrastructure in a production environment.
• Professional experience with dynamic routing protocols, such as BGP, OSPF, IS-IS, or EIGRP.
• Professional experience supporting enterprise wireless networking technologies.
• Professional experience supporting network security technologies, such as firewalls, IPS/IDS, network access control, Cisco ISE, segmentation, or related security platforms.

Preferred Qualifications

• Experience supporting data center network infrastructure.
• Experience with network fabric technologies, such as EVPN/VXLAN, Cisco SDA, ACI, virtualized routing, or comparable fabric-based architectures.
• Experience supporting MPLS, VRF, SD-WAN, or complex WAN routing environments.
• Experience with Cisco ISE, NAC, 802.1X, device profiling, guest access, posture, or network segmentation.
• Experience with network automation using Python, Ansible, APIs, Git, configuration management systems, or similar tools.
• Experience working in higher education, government, large enterprise, healthcare, or another complex multi-site environment.
• Current or prior network-related certifications, such as CCNP, CCIE, JNCIP, CWNP, Aruba, Ruckus, Fortinet, Palo Alto, or comparable credentials.

Benefits

Job Duties

• Design, administer, maintain, and troubleshoot enterprise network infrastructure, including campus routing and switching, wireless, data center networks, network fabrics, WAN/SD-WAN, and related services.
• Support network security and access control platforms, including Cisco ISE, network segmentation, authentication/authorization policies, and related security integrations.
• Diagnose and resolve complex network incidents affecting wired, wireless, data center, WAN, and security services.
• Lead and support network infrastructure projects from planning through implementation, including design, change coordination, testing, documentation, and operational handoff.
• Develop and maintain network standards, diagrams, procedures, configuration templates, and operational documentation.
• Monitor network performance, availability, capacity, and reliability; identify trends and recommend improvements.
• Automate network operations using scripting, APIs, configuration management tools, monitoring platforms, and AI-assisted workflows where appropriate.
• Provide technical leadership, mentorship, and vendor coordination; participate in a shared after-hours on-call rotation, currently one week every six weeks.

Pay

The salary range for this position is $80,000 - $100,000 annually.

Schedule

The schedule for this position is full-time, with occasional evening and weekend work as needed.