235 Results for

Systems Administrator Jobs in Fullerton, CA

Jobs

New!

Newport Beach, CA4 days ago

$40–$50

Determining compensation for this role (and others) at Vaco by Highspring depends upon a wide array of factors including but not limited to: the individual’s skill sets, experience and training; licensure and certification requirements; office location and other geographic considerations; other business and organizational needs. Determining compensation for this role (and others) at Vaco/Highspring depends upon a wide array of factors including but not limited to the individual’s skill sets, experience and training, licensure and certifications, office location and other geographic considerations, as well as other business and organizational needs.

New!

Hollywood, CA1 day ago

$36.78–$41.02 Per Hour

Preparing and maintaining all payroll-related functions, assisting with company benefits administration along with supporting the HR Director as administrative support. Processing electronic timesheets in Paylocity for all staff and transmitting data electronically to Payroll Service.

New!

Irvine, CA4 days ago

$50–$65

Downey, CA10 days ago

$1–$1 Per Hour

A Mainframe Systems Programmer/DBA is responsible for leading and/or supporting the most complex database upgrade projects, modification, installation, testing, implementation, maintenance and enhancements of new or existing system software products. This classification must plan, install, configure, test, implement and manage core database products, software products in support of the County’s database architecture and business needs.

Irvine, CA11 days ago

$36–$44 Per Hour
Temporary
Contractor
Full-time

This role supports the full contract lifecycle—from proposal development and negotiation through execution and performance monitoring—while also supporting order entry, demand planning, and customer communication. The ideal candidate has experience reviewing contract terms, coordinating cross-functional inputs, and managing customer orders in a structured, compliance-driven environment.

New!

Buena Park, CA1 day ago

$125,000–$150,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Job Summary: The primary function of this position is to manage and maintain the computer network and systems, including hardware, IT ticket system, software, the network backbone, and the telephone communications system.

New!

Compton, CA5 days ago

Additionally, if the nursing requirements listed below are not met, an individual may be placed in the Administrator role without them; however, in the absence of these qualifications, there must be a designated Registered Supervising Nurse at the clinic who does possess these qualifications: Must be full-time employee of the Company and available to clinic staff during time clinic is open. Continuously monitor to ensure that a safe and sanitary physical environment is maintained throughout the facility; that all equipment is maintained and functions properly; and that adequate and appropriate inventory levels of all supplies are available and used correctly.

New!

Buena Park, CA4 days ago

Industry: Construction Materials / Mining / Trucking / Retail. Full-cycle payroll for ~740 employees across 5+ entities .

New!

Downey, CA5 days ago

The Linux System Administrator is responsible for applying Red Hat Enterprise Linux (RHEL), Ubuntu, CentOS, Suse and Debian concepts and industry best practices to resolve complex issues, provide daily operational management of private and public cloud Linux server instances, maintaining thorough documentation of procedures and system configurations, selecting methods and techniques to obtain solutions, evaluating technologies, performing cost / benefit analysis, and completing additional work assigned by the manager and lead. The position requires system administration experience along with the skill to administer various distributions and open-source applications of the Linux operating system; works closely with other System Administrators, Application Engineers, Developers, Cyber Security professionals, Systems Engineers, and Operations specialists to provide top-quality secure computing and storage services to a variety of county customers.

North Hollywood, CA8 days ago

$37–$40 Per Hour
Temporary
Contractor
Full-time

This role supports the full contract lifecycle, including requirements definition, proposal development, performance monitoring, pricing and terms negotiation, and compliance with contractual and regulatory requirements. Initiate and coordinate the bid process by gathering requirements and collaborating with cross-functional teams to align on scope, schedule, and cost inputs.

Long Beach, CA7 days ago

Full-time
Employee

The position serves as the central point of coordination between requestors, Chancellor's Office divisions and departments, University Counsel, Strategic Communications, and University leadership, ensuring appropriate awareness and coordination regarding sensitive or high-profile requests, while promoting transparency, legal compliance, and the protection of confidential and privileged information. Under the general direction of the Assistant Vice Chancellor and Chief of Staff, Office of General Counsel, the Records Access Officer will: -Receive PRA requests submitted by any method; independently log, track, and manage requests in a centralized system to ensure compliance with statutory deadlines.

New!

Los Angeles, CA4 days ago

$140,000–$170,000

Determining compensation for this role (and others) at Vaco by Highspring depends upon a wide array of factors including but not limited to: the individual’s skill sets, experience and training; licensure and certification requirements; office location and other geographic considerations; other business and organizational needs. Vaco by Highspring values a diverse workplace and strongly encourages women, people of color, LGBTQ+ individuals, people with disabilities, members of ethnic minorities, foreign-born residents, and veterans to apply.

Los Angeles, CA11 days ago

$24–$30 Per Hour
Temporary
Contractor
Full-time

Auditor: Knowledge of HMO/IPA operations; medical terminology; ICD-10, RVS, and CPT coding; Medicare and Medi-Cal guidelines; and 10-key skills by touch. WinCorp Solutions is seeking multiple healthcare roles to serve as a consultant for our clients in the healthcare system.

New!

Anaheim, CAToday

Full-time

This role involves maintaining key systems such as the Assure Policy platform, managing change requests, ensuring data privacy compliance, coordinating with vendors, supporting UAT, and handling incident resolution and documentation. The ideal candidate will have 3+ years of experience in IT operations within the insurance industry, experience with similar platforms, knowledge of data privacy regulations, and strong communication and coordination skills.

Los Angeles, CA30+ days ago

$80–$90 Per Hour

The Senior Systems Administrator for MES is the technical expert responsible for managing the entire IT infrastructure stack that supports 24/7 manufacturing operations—from the physical hardware (Cisco UCS) and virtualization layer (VMware) to core network services (AD) and application delivery (Citrix). Highly analytical with strong problem-solving ability, clear and effective communicator, detail-oriented, proactive in ensuring system stability and data protection, and capable of leading projects and mentoring junior team members.

San Dimas, California19 days ago

$70,000–$100,000

What you'll do: Administer and maintain Windows Server, Active Directory, and Microsoft 365 / Exchange Online across dozens of client tenants. Solid command of Windows Server, Active Directory, DNS, DHCP, TCP/IP, and general networking.

Anaheim, CA30+ days ago

Full-time

Our exciting Case Management product is an Enterprise business application that includes workflow processes, case and document management, and extensive reporting with a focus on criminal justice business knowledge. Our future depends upon hiring and retaining great talent who are looking to use the latest technology to create state of the art products for our public safety and social services customers.

Anaheim, CA30+ days ago

Full-time

All active employees must be able to satisfactorily perform the essential functions of the position and that, if requested, reasonable accommodations may be made to enable employees with disabilities to perform the essential functions of their job, absent undue hardship. Occasional datacenter visits may be required for infrastructure maintenance or upgradesThis job description is not an exhaustive list of all functions that the employee may be required to perform, and the employee may be required to perform additional functions.

Upland, California28 days ago

$85,000–$85,000

Responsibilities include overseeing data backups, assisting with disaster recovery testing, administering Active Directory, troubleshooting GPOs, and conducting security monitoring, alert investigation, and vulnerability scanning. The role involves managing, monitoring, securing, and maintaining on-premises and cloud-based Windows servers, including performance optimization, documentation, storage analysis, and patching.

Monrovia, California30+ days ago

$66,000–$106,000 Per Year

Serve as the technical lead for Windows-based enterprise infrastructure supporting the DSN Administrative Network, delivering secure, reliable computing services across data center and end-user environments. Administer and optimize Microsoft enterprise platforms including Windows Server, Active Directory, Group Policy, DNS, and identity/access management services in alignment with NASA and federal cybersecurity requirements.

Culver City, CA18 days ago

$88,000–$95,000

Manage and maintain core IT infrastructure, including Windows servers, Hyper-V virtualization platforms, cloud services (O365), networking equipment, and security systems. This position also acts as a technical escalation point for complex issues, working in collaboration with Help Desk staff to ensure timely and effective resolution, while maintaining a primary focus on infrastructure and systems operations.

Irvine, CA13 days ago

$102,000–$152,000 Per Year

This role is responsible for the administration, performance, and reliability of the firm’s financial systems platform, including practice management and related financial applications, as well as the SQL Server infrastructure supporting those systems. The ideal candidate will bring experience supporting enterprise financial systems in a law firm or professional services environment, combined with strong SQL Server knowledge and a solid understanding of enterprise IT infrastructure.

Los Angeles, CA15 days ago

$75,000–$90,000

Liberty Behavioral & Community Services is seeking a skilled and proactive IT Systems Administrator & Project Manager to oversee and support the organization’s technology infrastructure, applications, and system implementations. This role is responsible for managing hardware, software, and network systems, while also leading key technology initiatives—including Electronic Health Record (EHR) implementation, optimization, and support.

Irvine, CA24 days ago

Full-time

Additional roles & responsibilities will include but not necessarily limited to the following: Automation of application administration activities such as writing scripts or using automated tools (such as PowerShell, VBScript, Group Policy, or third-party solutions) to: Create user accounts - Automatically provision new users with predefined settings, permissions, and profiles | Modify user properties - Update user attributes (passwords, group memberships, email addresses, properties) programmatically | Delete user accounts - Remove user accounts and associated resources systematically and safely. Consult with engineering staff and users to evaluate interface between hardware and software, develop and implement specifications and performance requirements and resolve customer problems, requiring specialized aptitude with various systems.

Irvine, CA10 days ago

Full-time

Technical knowledge of Windows/Unix/AIX/Linux/Solaris Server, Server, Networking (Cisco), VOIP, IIS, Active Directory, SQL Server, Oracle Database, and Virtualization. Additional key roles & responsibilities will include: Platform Engineering:Design network architectures across on-prem, private cloud, and public cloud environments.

Vernon, CA18 days ago

Blackstone Talent Group is a wholly owned subsidiary of Blackstone Technology Group, a global IT services and software firm that implements technological solutions across commercial industry verticals and the US Federal Government. Blackstone Talent Group, an award-winning technology consulting and talent agency is seeking a Engineering Systems Administrator / Support Lead to join our Client's team.

Los Angeles, California19 days ago

$95,000–$125,000 Per Year

Oversee the setup, maintenance, and real-time troubleshooting of audio-visual equipment in conference rooms, including MTRs, ResourceXpress, Shure, and Crestron devices. Execute configuration and maintenance of endpoint management systems and MDM solutions for a wide range of devices, including Windows, MacOS, and iOS.

New!

Los Angeles, CA1 day ago

The IT Help Desk / Junior Systems Administrator provides frontline technical support and assists with junior-level system administration and business analysis tasks for Diamond Game end users. Responsibilities include setting up, configuring, deploying, and supporting Windows-based laptops and desktop systems, as well as installing, configuring, and troubleshooting desktop applications, particularly the Microsoft Office suite.

Long Beach, California30+ days ago

$90,000–$110,000 Per Year

Whether it's reducing methane emissions at agricultural facilities and landfills, repurposing contaminated properties, producing alternative energy, or sequestering carbon, we've been focused on finding smart climate solutions and improving the natural environment since our inception over 55 years ago. This role focuses on the back-end functionality of the ERP system, including database administration, SQL development, report creation, system upgrades, and advanced troubleshooting.

Los Angeles, CA30+ days ago

$105,000–$145,000 Per Year

From real-time data and market insights generated by Crexi Intelligence, to targeted property marketing and seamless deal management through Crexi PRO, and a transparent, time-bound bidding experience with Crexi Auction— Crexi enables users to evaluate opportunities, maximize exposure, and close with speed and confidence. Crexi's platform democratizes CRE by providing unprecedented access to market insights and opportunities, accelerates CRE dealmaking with purpose-built technology that enhances speed and transparency; and empowers CRE professionals with a centralized platform designed for real-time collaboration and success.

Irvine, CA11 days ago

Full-time

Architecture & EngineeringDesign and implement enterprise-grade Microsoft 365 solutions, including Exchange Online, SharePoint Online, OneDrive, Microsoft Teams, and Entra ID. Core Microsoft 365 Platform Expertise which include:Deep hands-on knowledge of the major workloads: Microsoft 365 (overall architecture, licensing, tenant management).

Irvine, CA30+ days ago

Tailored Technology Services Inc. is a rapidly growing Managed Service Provider (MSP) delivering comprehensive IT solutions to small and medium-sized businesses across various industries, including construction, engineering, legal, and financial sectors. Key Responsibilities:System Management: Maintain, monitor, and manage client systems, including servers, workstations, networks, and cloud environments (e.g., Microsoft 365, Azure, etc.).

Vernon, CA30+ days ago

The System Administrator will provide technical support, analyze current systems and assets, recommend and implement solutions and upgrades, provide training, and help manage and maintain a broad array of IT systems for a hybrid (on-premises and cloud) environment. The ideal candidate should have a solid understanding of network and system administration principles, as well as experience working with Windows and iOS operating systems.

Los Angeles, CA30+ days ago

$37–$42

Committed to core values such as integrity, excellence, and maintaining a growth mindset, Be Structured delivers exceptional value, builds lasting partnerships, and keeps customers confident that their IT solutions are in safe hands. Monitor network performance using tools and metrics, troubleshoot network issues, and collaborate with IT teams or service providers to implement solutions and improve network efficiency.

Los Angeles, CA25 days ago

You will provide essential day-to-day support for Collateral, Sensitive Compartmented Information (SCI), and SAP activities, ensuring secure and reliable operations within a dedicated office environment. + Interfacing directly with local customers and program managers to provide rapid IT support and resolve technical issues during requirement meetings.

New!

Irvine, CA1 day ago

$26–$28 Per Hour
Full-time

Requesting Information About the AEDT - NYC Local Law 144: Candidates who reside in New York City and are subject to NYC Local Law 144 may request information about the AEDT, including details on the type of data collected, the sources of such data, and our data retention policies. This role provides technical support to managers and users, ensures compliance with company and departmental policies, and supports operational and systems-related training initiatives.

Seal Beach, CA30+ days ago

Full-time

Partner closely with Program Management, Program Chief of Staff and the IT Business Success Leader to prioritize and schedule IT projects, initiatives and service requests Basic Qualifications (Required Skills/Experience): • Windows Active Directory Administration Skills • Security Plus Certification • Top Secret, SCI Tier 5 Active must have been active in the last 24 months to be considered active clearance Preferred Qualifications (Desired Skills/Experience): • Working knowledge of Risk Management Framework and Continuous Monitoring Cycle • CISSP • Information Assurance Skills This job is with Encode, Inc a fully owned subsidiary of Lancesoft In this role you will operate as the Specialized (US) Infrastructure Operations (SUSIO) – IT Site Operations Support Technician and provide system operations support for break/fix, installation, access control, information assurance and request fulfillment of IT services.

Burbank, CA18 days ago

Remote

$38.22–$50 Per Hour

The role involves configuring and maintaining financial products, ensuring strong controls, and complying with regulations using a widely recognized technology platform. A leading credit union in Burbank, CA is seeking a skilled System Administrator to manage and optimize their lending platform.

Gardena, California30+ days ago

Troubleshoot and Resolve Issues: Quickly diagnose and resolve network, hardware, software, and system issues to minimize downtime and impact on business operations. Network Management: Design, deploy, and maintain functional and secure networks (LAN, WLAN, WAN).

Los Angeles, CA26 days ago

$75–$80 Per Hour

All employees are required to comply with E-Verify, an Internet-based system operated by the Department of Homeland Security (DHS) in partnership with the Social Security Administration (SSA). Global Service Resources is a national recruiter for IT professionals and Healthcare professionals throughout the continental United States.

Monterey Park, CA30+ days ago

$150,000–$160,000

Support project controls disciplines within the PMIS: cost management, forecasting, schedule tracking, contract administration, change management, invoicing/payment applications, document management, RFIs, submittals, correspondence, action tracking, etc. The Senior Systems Administrator supports the Capital Improvement Program by serving as the primary administrator and advocate for the Project Management Information System (PMIS) platform (Trimble Unity Construction (TUC) / eBuilder).

Gardena, California30+ days ago

Fullerton, CA28 days ago

$100,000–$150,000
Full-time

Certifications in Microsoft Certified: Azure Administrator Associate, CompTIA Network+, CompTIA Security+, Cisco Certified Network Associate (CCNA), and Certified Information Systems Security Professional (CISSP) will be an added advantage. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

City of Industry, California30+ days ago

$105,000–$115,000 Per Year

Alhambra, California7 days ago

Overview: The Server Administrator, under the supervision of the Senior Director of Information Services, is responsible for the expert design, implementation, and advanced administration of the organization's critical, multi-platform server infrastructure, including Dell/HP hardware, Windows and Linux operating systems, and diverse virtualization technologies (VMware vSphere/ESXi and Microsoft Hyper-V). Expertise in architecting, implementing, and maintaining enterprise-level directory services, specifically Windows Active Directory and Group Policy Objects (GPOs), alongside critical network services (DNS, DHCP).

Los Angeles, CA30+ days ago

$53.41–$57 Per Hour

Schedule: Alternating Fridays offOverviewWe are seeking an experienced IT Infrastructure Administrator III to support day-to-day administration of enterprise infrastructure systems. The position involves analyzing technical issues, interpreting policies and system guidelines, and determining the best course of action to resolve infrastructure problems across multiple platforms.

Alhambra, California19 days ago

AHMC provides management services to AHMC Anaheim Regional Medical Center, Garfield Medical Center, Greater El Monte Community Hospital, Monterey Park Hospital, San Gabriel Valley Medical Center, AHMC Seton Medical Center, AHMC Seton Medical Center Coastside, Doctors Hospital of Riverside, and Whittier Hospital Medical Center. The Network Administrator plays an essential role in guaranteeing the stability and integrity of voice, data, video, and wireless network services, serving as the primary resource for planning, designing, and developing local area networks (LANs) and wide area networks (WANs) across the enterprise.

Los Angeles, CA10 days ago

$53.41–$57 Per Hour

Los Angeles, CA30+ days ago

Remote

$140,000–$155,000 Per Year

Perform advanced, end-to-end performance tuning across application, database, and system levels, including detailed SQL query optimization and access path analysis (using tools like EXPLAIN). Design, implement, and manage DB2 Connect configurations to enable seamless communication between distributed applications and the mainframe DB2 subsystem.

Gardena, California30+ days ago

Network Management: Monitor and maintain network devices and services to ensure secure, functional, and high-performing network environments. System Administration: Support system administration tasks, including managing Windows servers, VMware (ESXi, vSAN), and backup systems like Veeam.

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Systems Administrator Jobs in Fullerton, CA

Jobs

Sr. Contract AdministratorVaco LLC

Payroll AdministratorMount Sinai Memorial Parks and Mortuaries

Payroll AdministratorVaco LLC

ADABAS/CICS/IMS Systems Programmer/DBATPI Global Solutions

Contracts Administrator (Customer Contracts & Order Management)804 Technology

IT ManagerJobot

Dialysis Facility AdministratorU.S. Renal Care

Payroll AdministratorKinetic Personnel Group

Tally Lead - RRCC - RHEL AdminTech Providers Inc.

Contracts Administrator804 Technology

Records Access OfficerCalifornia State University Office of the Chancellor

Finance Manager x 140K - 160K + bonus x LA / flexVaco LLC

MULTIPLE HEALTH CARE ROLES (URGENTLY HIRING!!) - LA AREAWinCorp Solutions

IT Business Systems Administrator - HYBRIDDB Insurance Co., Ltd.

Sr. Systems AdministratorValspec

Systems AdministratorComputer Concepts

IT Systems AdministratorcFive Solutions, Inc

Systems AdministratorGanahl Lumber Co

IT Systems AdministratorLedgent Technology

Systems AdministratorPeraton

Systems Administrator IPunch Studio

Financial Systems AdministratorFisher & Phillips LLP

IT Systems Administrator & Project ManagerLiberty Behavioral & Community Services, Inc.

10041 - Engineering Systems Administrator (automating application administration activities)Hyundai Autoever America

10351 - Systems Administrator IIIHyundai Autoever America

Engineering Systems Administrator / Support LeadBlackstone Talent Group

Endpoint Systems AdministratorCorgan

IT Help Desk - Junior System Administrator, Diamond Game EnterprisesDiamond Game

ERP Systems AdministratorSCS Engineers

Business Systems AdministratorCrexi

10331: Sr. Engineering Systems Administrator - Microsoft 365Hyundai Autoever America

System AdministratorTailored Technology Services

System Administrator- Vernon, CaliforniaGeorgia Tek Systems

System Administrator II (Bi-Lingual English/Spanish)Be Structured Technology Group, Inc.

Network System AdministratorManTech

Systems Support AdministratorFirstService Residential

System Administrator 3LanceSoft Inc

MeridianLink System AdministratorMitchell Martin

Systems/Network AdministratorHustler Casino

AS/400 System Administrator 857Global Service Resources

Senior System AdministratorPM2CM

Systems/Network AdministratorLarry Flynt's Lucky Lady Casino

System AdministratorJobot

Systems & Network AdministrationQuinn Company

Server Administrator (on-site) (no relo)AHMC Healthcare

IT Infrastructure Administrator IIISuperbTech,Inc.

Network Administrator (on-site) (no relo)AHMC Healthcare

Senior Linux AdministratorSuperbTech,Inc.

Mainframe DB2 Database AdministratorNoor Staffing Group

Network AdministratorHustler Casino

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