Senior Network Administrator

Las Vegas-Clark County Library District•Las Vegas, NV

2d•$86,277 - $115,620•Onsite

About The Position

Under general direction from the IT Network & Cybersecurity Manager, the Senior Network Administrator is responsible for the design, administration, security, and ongoing optimization of the Las Vegas Clark County Library District's (District) enterprise network infrastructure. This position provides advanced technical leadership for the District's wired and wireless networks, perimeter and internal security systems, and hybrid identity/network integration with Microsoft Azure and Entra ID.

Requirements

Bachelor’s Degree in Information Technology, Computer Science, Cybersecurity, or a related field.
Five (5) to seven (7) years of progressively responsible experience in network administration, network security, or infrastructure engineering.
Possess, or have the ability to obtain a valid Nevada Driver's License at the time of hire.
Demonstrated experience administering enterprise firewalls, preferably Fortinet FortiGate solutions in a production environment.
Experience with FortiAnalyzer, FortiManager, FortiAuthenticator, or other Fortinet ecosystem tools.
Microsoft Intune, Conditional Access, MFA, and secure identity/access governance in Microsoft 365 environments.
Strong experience with core networking technologies and protocols, including TCP/IP, DNS, DHCP, VLANs, routing, switching, VPNs, NAT, wireless networking, and network segmentation.
Hands-on experience with network monitoring, diagnostics, log analysis, and performance tuning.
Experience supporting Microsoft Azure environments and Microsoft Entra ID integration in hybrid enterprise settings.
Ability to identify security risks, propose mitigations, and implement best practices in a methodical and well-documented manner.
Ability to collaborate at a high level and customer-service mindset in supporting District operations, including analytical, troubleshooting, documentation, and communication skills, including work within public sector, education, or multi-site enterprise environments.
Strong understanding of cybersecurity principles related to network infrastructure, secure access, hardening, least privilege, identity integration, and threat mitigation.
Familiarity with compliance-driven security controls, audit support, and business continuity/disaster recovery planning.
Virtualization, cloud migrations, or hybrid infrastructure modernization initiatives.

Nice To Haves

Industry certifications such as Fortinet NSE / FCF / FCA, CCNA, CCNP, Network+, Security+, AZ-104, AZ-700, SC-300, or equivalent.

Responsibilities

Designs, implements, administers, and supports enterprise LAN, WAN, VPN, SD-WAN, and wireless network infrastructure across the District.
Serves as the primary administrator for Fortinet security platforms, including FortiGate firewalls, security policies, NAT, IPS, web filtering, SSL inspection, VPN configuration, high availability, logging, and firmware lifecycle management.
Monitors, analyzes, and optimizes network and firewall performance to ensure maximum uptime, resilience, and security.
Leads the implementation and maintenance of network security controls, including segmentation, access control lists, secure remote access, intrusion prevention, and zero-trust-aligned network practices.
Administers and supports hybrid identity and access solutions involving Microsoft Entra ID, including secure authentication integration, conditional access dependencies, identity-aware networking, and cloud-connected access control.
Supports and maintains Microsoft Azure network-related resources, such as virtual networks, network security groups, private connectivity, and secure communication between cloud and on-premises systems.
Investigates and resolves complex network, firewall, and connectivity issues using packet analysis, system logs, monitoring platforms, and structured troubleshooting methodologies.
Collaborates with cybersecurity, systems, and support teams to strengthen the District’s overall security posture and ensure secure delivery of technology services.
Participates in vulnerability remediation efforts related to network infrastructure, firewall exposures, access control weaknesses, and configuration hardening.
Develops and maintains standards for secure network architecture, firewall rule management, VPN deployment, and administrative access control.
Performs routine maintenance, upgrades, patching, configuration backups, and disaster recovery readiness for network and security infrastructure.
Maintains comprehensive and accurate documentation of network topology, firewall configurations, IP schema, VPN tunnels, cloud connectivity, and operational procedures.
Evaluates emerging technologies and makes recommendations for improvements to network performance, security, redundancy, and scalability.
Provides advanced technical guidance and mentorship to IT staff and assist with escalation support for network-related incidents.
Participates in after-hours maintenance windows, emergency response, and on-call support as needed to maintain critical infrastructure operations.
Performs other duties as assigned.