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Senior Network Administrator

SchoolsFirst FCU

Tustin, CA · Posted September 18, 2026

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About the job

We’re always looking for diverse, talented, service-oriented people to join our exceptional team.

Senior Network Administrator

The pay range for this position is listed below. Our pay ranges are built to allow for candidates with various levels of skill and experience to be considered, as well as for room for growth and tenure achieved in a role over time. Typical new hire salary offers fall within the minimum to midpoint of a pay range for many candidates. Any offer extended to a candidate will be based upon their unique set of knowledge, skills, education, and experience as well as internal equity.

Pay Range: $42.41 - $63.62

Scheduled Weekly Hours:

40

What You’ll Be Doing Responsible for effective administration, configuration, installation, provisioning, monitoring and troubleshooting to ensure availability, capacity and performance of network infrastructure systems is achieved. Perform assigned duties as listed in RACI model(s) under general supervision from manager. Collaborate with peers and manager on operational tasks, system enhancements and project activities.

Support enterprise Cisco network infrastructure, including routing and switching, wireless networking, SD-WAN, network monitoring, branch/ATM connectivity, and network operations.

Install, configure, maintain, patch, upgrade, and troubleshoot network systems and related infrastructure.

Develop and maintain configuration standards and operating procedures.

Coordinate with vendors for technical support and upgrades.

Monitor network health, availability, alerts, logs, performance, capacity, and system integrity; provide KPI and metrics reporting as needed.

Respond to incidents, problems, service requests, and escalations; monitor ITSM queues and prioritize resolution appropriately.

Lead root cause analysis efforts for major incidents.

Act as an escalation point for complex network issues.

Develop and maintain configuration standards, operating procedures, documentation, runbooks, and process improvements.

Conduct after-hours maintenance.

Coordinate with team members, vendors, engineering teams, and service stakeholders for support, upgrades, maintenance, and project work.

Create, change, and delete user accounts per request.

Provide assistance for support cases escalated by Network Administrators I & II

Conduct after-hours maintenance, participate in the on-call rotation supporting the production environment 24x7x365, and travel to remote office and ATM locations up to 50% of the time.

Additional Job Functions

Performs other duties as assigned

Complies with regulatory compliance and assigned training requirements including but not limited to BSA regulations corresponding to their specific job duties. Failure to do so may result in disciplinary and other employment related actions.

Qualifications

High School Diploma or GED required

Bachelor's Degree in a related field or equivalent years of experience required

3-5 years of relevant network infrastructure experience required.

Cisco CCNA Routing and switching required

Cisco CCNA Wireless preferred

Cisco CCNA Security preferred

ACMA/ACCA preferred

CCSA preferred

F5-CA preferred

Participation in the CA DMV pull program may be required depending on assignment

Knowledge, Skills, and Abilities

Intermediate knowledge of routing, switching, LAN/WAN, TCP/IP, OSI, VLANs, trunking, NAT, QoS, DHCP, DNS, HSRP, IPsec, EIGRP, OSPF, and BGP.

Foundational to intermediate knowledge of SD-WAN, branch connectivity, circuit failover, DIA, broadband, MPLS, cellular connectivity, and enterprise network monitoring.

Foundational to intermediate knowledge of Python and Ansible.

Foundational to intermediate knowledge of monitoring applications: Live Action, Thousand Eyes, Solarwinds, and other products.

Foundational to intermediate knowledge of wireless networking, including Aruba, Cisco Wireless, access point monitoring, client troubleshooting, and RF basics.

Foundational to intermediate knowledge of incident, request, task, and change management workflows; device lifecycle support; configuration validation; backup review; and standardization efforts.

Foundational to intermediate knowledge of network documentation, configuration checklists, diagrams, branch/ATM support documentation, standard operating procedures, automation, reporting, and operational efficiency practices.

Intermediate knowledge of SNMP, logging, packet capture, operating systems, servers, storage, audit/security best practices, and data center standards including cabling, power, fire suppression, and safety.

SchoolsFirst FCU is committed to Diverse, Equitable, and Inclusive Hiring

At SchoolsFirst FCU we are dedicated to building and growing a diverse, inclusive, and authentic Dream Team, so if you’re excited about a position or wanting to make a career change but your past experience doesn’t align perfectly with every qualification in the job description, we encourage you to apply anyway. Many skills are transferrable and you may be just the right candidate for the position, or for other roles we are working on.

SchoolsFirst Federal Credit Union is committed to fostering, cultivating, and preserving a culture of diversity and inclusion. SchoolsFirst FCU is an equal opportunity employer and prohibits discrimination against qualified individuals based on their status as protected veterans or individuals with disabilities and prohibits discrimination against all individuals based on their race, color, religion, sex, national origin, age, sexual orientation, gender identity or expression, political affiliation, or genetic information.

This organization participates in E-Verify.