Senior Network Systems Administrator

County of Los Angeles; Los Angeles (CA); On-site; USD 90,000 - 140,000; Full time

Job summary

County of Los Angeles is seeking a Senior Network Systems Administrator to manage complex LAN and server environments during an emergency period. The role focuses on configuring, upgrading, and securing networks, with a path from temporary hire to permanent appointment based on performance.

The ideal candidate will have a bachelor’s degree in CS/IS and several years of LAN design and administration experience, including VLAN, security, and backup planning.

Qualifications

• Bachelor's degree in CS/IS or related field with 3 years LAN design/administration
• Or 1 year at Network Systems Administrator II level
• Or 4 years progressive LAN design/administration experience

Responsibilities

• Performs complex network and server administration: configure, install, repair, maintain, upgrade hardware and OS.
• Designs and tests moderate to complex network software and physical infrastructure.
• Implements network security: end user roles, trust, access rights, directories.
• Configures VLANs to support IP services (audio, video, data).
• Analyzes network resource usage and fixes issues to keep apps accessible.
• Identifies changes to improve performance, reliability, and availability.

Skills

LAN design

Network administration

Security

VLAN configuration

Education

Bachelor's degree in Computer Science/Information Systems

Tools

Network management tools

Server operating systems

Job description

Position/Program Information

TYPE OF RECRUITMENT: OPEN COMPETITIVE - EMERGENCY

The application filing period will begin on Friday, October 23, 2026 at 1:00p.m. (Pacific Time) with a deadline of Wednesday, October 28, 2026 at 5:00 p.m. (Pacific Time).

The exam will reopen as the needs of the service require.

EXAM NUMBER: M2560A-FR

The LA County Board of Supervisors has unanimously ratified a Proclamation of Local Emergency in response to the windstorms and wildfires, including the Palisades and Eaton Fires, that have devastated communities across the County. We are looking for qualified and passionate individuals to assist the County in mobilizing resources and support needed to help our residents recover and rebuild. If you are looking for a new career that will directly benefit the population of LA County, this may be the opportunity for you.

The Chief Executive Office is seeking qualified candidates to fill emergency Senior Network Systems Administrator vacancies related to this unprecedented natural disaster.

Applicants will be processed on an as-received basis and those who meet the requirements may be hired on a temporary basis for up to 90 days.

During your initial work period, you will be assessed on your work performance. This assessment will be weighted 100%.

Those who successfully pass the assessment will be considered for permanent appointment as Senior Network Systems Administrator.

Essential Job Functions

• Performs the more complex network and server administration functions, including configuring, installing, repairing, maintaining, and upgrading hardware and operating systems.
• Installs, customizes, configures, troubleshoots, tests and optimizes moderate to complex network software and physical infrastructure designs.
• Designs and implements network security solutions, including elements such as end user roles and groups, trust relationships, access rights, and directories.
• Performs VLAN configuration to support the installation and maintenance of services over Internet Protocol (IP)such as audio, video and data.
• Analyzes network resource utilization and implements solutions to correct problems to ensure all network applications are accessible and functioning properly.
• Identifies and recommends appropriate changes to network infrastructure to improve performance, reliability and availability.
• Develops and recommends procedures for network management, including resource allocation of centralized, decentralized and remote network services.
• Plans and installs hardware upgrades for network servers, gateways, and associated telecommunication devices.
• Identifies and resolves complex network problems; uses network management tools.
• Ensures network security according to policies and procedures and documents information security processes.
• Participates in or performs the selection, development, and implementation of backup and recovery solutions.
• Tracks network assets.
• May design and maintain more complex network architecture, including hubs, routers and physical network.
• May conduct analysis and participate in implementation planning for new applications.
• May conduct analysis in support of data center planning.
• May provide in-depth support for information security incidents including internal violations, hacker attacks, viruses and system access.
• May research and evaluate network and server hardware and software options and upgrades including updates, patches, and service packs.
• May lead a network support team.

Requirements

MINIMUM REQUIREMENTS:

Training And Experience

Graduation from an accredited college or university with a bachelor's degree in Computer Science, Information Systems, or a closely related field and three (3) years of recent full-time, paid experience in LAN design, configuration, and administration. -OR- One (1) year of experience at the level of Network Systems Administrator II. -OR- Four years of recent, progressively responsible experience in LAN design, configuration, and administration.

License

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.

Physical Class

3 - Moderate.

Special Requirements

• In order to receive credit for a Bachelor's Degree or higher degree, you MUST attach a legible copy of your "official" diploma, "official" transcripts, or "official" letter from an accredited institution which shows the area of specialization at the time of filing. If you are unable to attach the required documents at the time of filing, you must email to [e-mail]. Please ensure to indicate the examination title and number on the subject of your email.
• Experience at the level of County of Los Angeles class of Network Systems Administrator II: Responsible for the daily operation and administration of network and server operating system environments. Under general supervision, incumbents perform network monitoring and/or network administration duties within established standards and guidelines using independent judgment.

Additional Information

Examination Content: During your initial work period, the appointing department will evaluate your performance. Those who achieve a passing score on this evaluation will be considered for permanent appointment.

SOCIAL SECURITY NUMBER

Please include your Social Security Number for record control purposes. Federal law requires that all employed persons have a Social Security Number.

Anti-Racism, Diversity, and Inclusion (ARDI)

The County of Los Angeles recognizes and affirms that all people are created equal and are entitled to all rights afforded by the Constitution of the United States. The Department of Human Resources is committed to promoting Anti-racism, Diversity, and Inclusion efforts to address the inequalities and disparities amongst race. We support the ARDI Strategic Plan and its goals by improving equality, diversity, and inclusion in recruitment, selection, and employment practices.

Department Contact

Emily Stranger

Email: [e-mail]

Teletype Phone: [phone]

California Relay Services Phone: [phone]

Employment Information

Any language contained in the job posting supersedes any language contained below. This document is intended to provide general information about the recruitment process of the County of Los Angeles. Applicants with questions about a specific job posting should contact the exam analyst listed on the posting.

Equal Employment Opportunity/Non-Discrimination Statement

The County of Los Angeles is an Equal Employment Opportunity Employer and is committed to non-discrimination in the County workforce, regardless of age (40 and over); ancestry; color; ethnicity; religious creed; protected family or medical leave status; disability; marital status; medical condition; genetic information; military and veteran status; national origin; race ; sex; gender; sexual orientation; or any other characteristic protected by State or federal law. For more information, please visit: https://employee.hr.lacounty.gov/eeo-programs/.

Testing Accommodations For Applicants

The County of Los Angeles complies with all federal and state disability laws and makes reasonable accommodations for qualified applicants and employees with disabilities. If a reasonable accommodation is needed to participate in the job application process, please contact the testing accommodation coordinator listed on the job posting. Hearing impaired applicants with telephone teletype equipment may leave messages by calling the teletype phone number on the job posting. For more information on accommodations, please visit: https://hr.lacounty.gov/accessibility/.

Fair Chance

The County of Los Angeles is a Fair Chance employer. Except as otherwise permissible under applicable laws, you will not be asked to provide information about conviction history unless you receive a conditional offer of employment. The County will make an individualized assessment of whether your conviction history has a direct and adverse relationship with the specific duties of the job, and will also consider potential mitigating factors, which may include, but is not limited to, evidence and extent of rehabilitation, recency of the offense(s), and age at the time of the offense(s). If asked to provide information about conviction history, any convictions or court records which are exempted by a valid court order do not have to be disclosed. Qualified applicants with arrest or conviction records will be considered for employment in accordance with County Fair Chance Policies and the Fair Chance Act (Gov. Code Section 12952).

Employment Eligibility

Final appointment is contingent upon verification of U.S. citizenship or the right to work in the United States.

Career PathFinder

Resources to help current and prospective employees plan a career with Los Angeles County are available. To explore career paths to and from nearly all job titles, please visit our interactive Career PathFinder application at http://career-pathfinder.hr.lacounty.gov.

Veteran’s Credit

Pursuant to the County Charter and County policy, in all open competitive examinations (i.e., examinations open to everyone), the County of Los Angeles will add a credit of 10 percent of the total credits specified for such examination to the final passing score of an honorably discharged veteran, as well as the spouse of a deceased or disabled veteran, who served in the Armed Forces of the United States under specific conditions. For more information on veteran’s credit, please visit: https://file.lacounty.gov/SDSInter/dhr/205102_PPG_115.pdf