County of Los Angeles · 10 hours ago
SENIOR NETWORK SYSTEMS ADMINISTRATOR
Los Angeles County, CA
Full-time
Onsite
Mid, Senior Level
3+ years expCounty of Los Angeles is recruiting for highly motivated and career minded individuals to fill the position of Senior Network Systems Administrator. The role involves performing network administration functions, leading system administration tasks, and implementing network security solutions to mitigate cybersecurity threats.
Non ProfitSocial MediaGovernmentCommunities
Responsibilities
Performs network administration functions such as designing, configuring, deploying, testing, repairing and maintaining hardware/software/firmware upgrade
Plans the deployment of hardware, firmware and software upgrades for network appliances, gateways, and associated telecommunication devices
Configures and supports network devices such as Layer 2 and 3 configurations, Voice Gateways, wireless access points and controllers
Leads system administration functions such as designing and implementing enterprise infrastructure which encompasses hardware, servers and virtual systems
Leads and plans the deployment of hardware and software upgrades for servers and storage (e.g., Blade Systems, Server Virtualization, Active Directory, clustering, VoIP (Voice over IP), storage solutions, video conferencing systems)
Leads, designs and implements network security solutions (e.g., system network access control lists and host/network intrusion prevention systems) along with policy elements (e.g., end user roles and groups, trust relationships, access rights, directories, virus protection, security patch management, firewalls and software deployment)
Mitigates various enterprise cybersecurity threats and vulnerabilities (e.g., malware, viruses, spyware, adware, trojan horses, worms, phishing, spear phishing)
Provides senior level support for information enterprise cybersecurity breaches (e.g., internal/external violations/threats, hacker attacks, viruses and system access)
Analyzes Network performance, throughput and bandwidth optimization requirements to solve the more complex system configuration and performance issues
Identifies and recommends appropriate network device changes
Sets and verifies system thresholds, performs network tests, queries as needed in response to alerts
Performs critical data and configuration backup, database backup, system recovery, and/or participates in activities pertaining to business continuity and disaster recovery plans
Performs site assessment including cabling, rack elevations, electrical, HVAC (Heating Ventilation Air Conditioning), and peripherals
Designs and implements video and web teleconferencing solutions
Participates in the analysis, evaluation, and risk assessment tasks required for implementation of new applications, and system changes (e.g., vendor provided patches, service packs, network products, devices and network management solutions)
Develops and maintains network standard operating procedures, logs, and files
Tracks network assets (e.g., virtual servers, software subscriptions, network endpoints, mobile device manager) including purchasing, receiving, deployment, decommissioning, and disposal
Serves as a subject matter expert and provides technical recommendations for vendor products and services
Leads a network support team and serves as a project lead
Provides technical guidance and knowledge sharing to assigned staff and vendors
Qualification
Required
A Bachelor's degree from an accredited college or university in Computer Science, Information Systems, or a closely related field -AND- three (3) years of full-time experience in a centralized Information Technology organization within the last five (5) years in LAN design, configuration, and administration
Four (4) years of progressively responsible, full-time experience in a centralized Information Technology organization within the last five (5) years, involving increasing complexity and scope of responsibility in LAN design, configuration, and administration
A valid California Class C Driver License or the ability to use an alternative method of transportation when needed to carry out job-related essential functions
This class requires that the incumbent stand or walk most of the time with bending, stooping, squatting, twisting, reaching, working on irregular surfaces, occasional lifting of objects weighing over 25 pounds, and frequent lifting of 10-25 pounds
Benefits
One of the strongest public-sector benefits packages in the nation
Rich selection of health care options
Robust retirement plans
Flexibility to work, relax, and rejuvenate
Company
County of Los Angeles
Please follow Department of Human Resources main page at: https://www.linkedin.com/company/los-angeles-county/
10001+ employees
Funding
Current Stage
Late StageLeadership Team
Carter Hewgley
Senior Director, CEO-Homeless Initiative
Ellen Chow
Program Specialist III, CEO
Recent News
2026-02-06
Pasadena Star News
2025-12-21
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