IT SECURITY NETWORK ADMINISTRATOR (ON-SITE)

Santa Clara Development Corporation•Espanola, NM

1d•Onsite

About The Position

Under the general direction of the IT Manager, the IT Security Network Administrator administers, secures, monitors, maintains, and optimizes the organization’s network and network-security infrastructure. The role combines network administration with cybersecurity responsibilities, including access controls, firewall administration, network segmentation, threat monitoring, vulnerability remediation, and secure infrastructure operations. The position works with IT leadership, systems administrators, cybersecurity personnel, vendors, and business stakeholders to maintain a secure, reliable, and resilient network. The administrator manages network and security infrastructure and services; monitors performance, availability, capacity, and security events; troubleshoots complex issues; investigates and supports response to network-security incidents; and helps maintain secure configurations, access controls, vulnerability-remediation efforts, and regulatory compliance. The role also supports network-related systems and infrastructure, provides advanced and second-level technical support, coordinates vendors and projects, and maintains accurate technical documentation and change records. This is an on-site role involving work at network-equipment locations, telecommunications rooms, server rooms, data centers, and other infrastructure locations as required. The position requires availability for rotating schedules, after-hours on-call support, overtime, and response to maintenance, emergencies, or critical incidents as needed. The employee frequently lifts or moves up to 50 pounds and may encounter electrical-shock or radiation hazards, loud noise on the casino floor, and secondhand cigarette smoke.

Requirements

Associate degree in Computer Science or a related field and two years of hands-on network-engineering experience in an enterprise environment, or an equivalent combination of education, training, and experience.
Three to five or more years of progressively responsible experience in network administration, network security, cybersecurity, infrastructure administration, or a related field; the technical-expertise section specifies three to five years of hands-on Windows Server administration experience.
Demonstrated experience administering enterprise network infrastructure.
Strong knowledge of TCP/IP, routing, switching, VLANs, DNS, DHCP, VPN, and wireless networking.
Experience administering or supporting enterprise firewalls and network-security technologies, including intrusion-detection tools and network-monitoring suites.
Experience with network monitoring and troubleshooting, and the ability to troubleshoot complex network and security issues independently.
Understanding of network-security principles, vulnerabilities, attack methods, and secure infrastructure operations.
CCNA or an equivalent mix of education, training, and experience.
Knowledge of Microsoft operating systems, including Windows 11 and later versions, and Windows Server 2012 and later versions.
Knowledge of Windows Server components, including Active Directory, DHCP, DNS, and Group Policy controls.
Knowledge of network design principles and practices, including administration of VLANs and routers in complex, security-conscious networks.
Familiarity with regulatory-compliance governance and knowledge of applicable Santa Clara Pueblo Gaming and Regulatory Commission requirements.
Ability to analyze network performance and implement improvements; strong research, analytical, problem-solving, task-prioritization, and organizational skills.
Ability to manage multiple priorities, work effectively in a business and small-team environment, and perform in a fast-paced, high-pressure setting.
Strong written, verbal, interpersonal, and customer-service skills, including the ability to communicate effectively with technical and nontechnical audiences and handle conflict professionally.
Ability and initiative to learn new systems, software, and communication platforms through self-study, on-the-job training, and vendor-led coursework.
Knowledge of telephony systems such as VoIP and PBX; server operating systems such as Windows and Linux; and virtualization.
Ability to maintain confidentiality, attention to detail, regular attendance, and professional conduct in stressful situations.
Ability to work at network-equipment locations, telecommunications rooms, server rooms, data centers, and other infrastructure locations as required.
Ability to lift and move networking and related equipment; the employee is frequently required to lift or move up to 50 pounds.
Availability for rotating schedules, overtime, odd hours, after-hours on-call support, and response to critical network or cybersecurity incidents as required.

Nice To Haves

Bachelor’s degree in Information Technology, Cybersecurity, Computer Science, Network Engineering, Information Systems, or a related technical discipline.
Unix/Linux administration experience.
Experience supporting VMware vSphere 7.0 or the current supported version.
Experience configuring and administering Microsoft Office 365 Exchange and SharePoint.
Experience with database administration, including a currently supported version of SQL Server.
Experience with Fibre Channel or iSCSI SAN solutions and blade-systems infrastructure.
Experience with data-center infrastructure, including UPS management.
Cisco networking experience.

Responsibilities

Administer and maintain LAN, WAN, wireless, VPN, Internet, and related network infrastructure.
Configure and maintain switches, routers, firewalls, wireless infrastructure, VPN systems, and network-management platforms.
Administer VLANs, routing, switching, DNS, DHCP, IP addressing, and related network services.
Monitor network performance, availability, capacity, utilization, and security events; troubleshoot network connectivity, performance, routing, switching, wireless, and VPN issues.
Perform network upgrades, configuration changes, infrastructure maintenance, and scheduled or emergency maintenance activities.
Administer firewalls, network-security appliances, VPN infrastructure, intrusion-detection systems, and related security technologies.
Implement network segmentation, access-control policies, secure remote access, authentication requirements, and infrastructure hardening standards.
Review firewall rules, network-access permissions, privileged access, and other access for appropriateness, least privilege, and ongoing business need.
Identify network-security weaknesses, vulnerabilities, misconfigurations, abnormal activity, indicators of compromise, unauthorized access, and policy violations; support vulnerability remediation and security assessments, audits, and compliance activities.
Investigate network-security alerts and incidents; prepare incident reports and supporting documentation; assist with containment, remediation, recovery, and post-incident reviews; coordinate with IT and organizational personnel and escalate significant events.
Administer network-related user, device, and administrative access; support access-control technologies, authentication systems, and multi-factor authentication where applicable; assist with access reviews and removal of unnecessary access.
Maintain secure configurations for routers, switches, firewalls, wireless controllers and access points, and other network devices; coordinate operating-system and firmware updates; track device lifecycle and identify operational or security risks.
Support network business-continuity and disaster-recovery planning; identify single points of failure and security weaknesses in network architecture.
Maintain network diagrams, device inventories, IP-addressing and firewall documentation, configuration records, security-control documentation, policies, procedures, standards, and change records; follow change-management processes and keep critical technical knowledge accessible.
Work with Internet, telecommunications, managed-security, hardware, software, and other technology vendors; coordinate troubleshooting and support; evaluate products and services; review vendor recommendations; and participate in technology implementation and acceptance.
Provide advanced technical support for network and security issues; work with systems administrators and application teams to resolve connectivity and security problems; assist departments with secure connectivity; and explain technical issues to nontechnical stakeholders.
Diagnose, resolve, and document network hardware and software problems; provide end-user training and support where required.
Manage assigned projects and program components using project-management standards such as Agile or PMP.
Provide management with reports and updates on network performance, outages, and maintenance activities.
Ensure network equipment and communications software are properly licensed and assigned systems comply with applicable regulatory frameworks.
Assist the IT Systems Administrator with applications and storage infrastructure, including DNS, DHCP, Active Directory, VMware, and SANs.
Provide second-level support for network-system operations escalated by IT staff; support installation, maintenance, and troubleshooting of enterprise and desktop hardware and software.
Provide backup support for IT team members, including incoming support calls, emails, and walk-ins as needed to maintain department SLAs.
Participate in rotating after-hours on-call support and work rotating schedules, overtime, and odd hours as needed for projects, maintenance, critical issues, and emergencies.
Maintain confidentiality, regular attendance, and effective working relationships; perform other duties as assigned.