193 Results for

Systems Administrator Jobs in Corona, CA

Jobs

Irvine, CA27 days ago

$35–$43 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!

Newport Beach, CA5 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!

Irvine, CA5 days ago

$50–$65

New!

Buena Park, CA2 days 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.

Fontana, CA12 days ago

$22.72–$29 Per Hour

Responds to all customer requests for information, including providing copies of invoices, proofs of delivery, information on billing and account discrepancies, account reconciliations and any other requests the customer may have regarding their account status. Responsible for collection activities such as communicating past due amounts with customers, sending follow-up inquiries, and settling past due accounts.

Corona, CA7 days ago

A high school degree, or a GED, and more than seven (7) years of relevant system administration and five (5) years of experience installing patches, performing system updates, managing server and storage processing strategies and providing a wide range of system administration functions, OR. Bowhead is looking for a highly experienced Windows-focused Systems Administrator to support and manage enterprise IT infrastructure across multiple environments.

New!

Newport Beach, CA3 days ago

Remote

The ideal candidate will have a minimum of 2 years of hands-on technical experience across Computer Desktop Support including Windows 10/11, Data Backup, Basic Network Concepts, AntiVirus/Anti-Malware Applications, Microsoft 365 Office Applications, Active Directory, and Understanding of VOIP Concepts. LOCATION REQUIREMENT: This role requires candidates to live in California within commuting distance of customer locations throughout Los Angeles/Orange/Riverside/San Bernardino Counties.

Upland, California30+ 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.

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.

San Dimas, California30+ 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.

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.

Irvine, CA29 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.

Irvine, CA8 days ago

Full-time

This is a hands-on role at the center of how Ease operates — you will be the first point of contact for employee IT needs and the person who makes sure our SaaS environment, user accounts, and internal systems are well-managed and properly maintained. Manage Microsoft 365 mailboxes, aliases, and routing; administer Slack workspaces including channels and permissions; and handle email deliverability configurations such as DNS records and CNAME entries.

Anaheim, CA16 days ago

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.

New!

Irvine, CA1 day ago

Remote

$50–$60 Per Hour

Responsibilities : This role is responsible for the day-to-day administration of iCIMS, including system configuration, user support and training, troubleshooting, and maintaining data integrity. The role also supports reporting and analytics needs, contributes to process improvements, and partners on system updates and enhancements to improve the overall candidate and recruiter experience.

New!

Irvine, CA1 day ago

Remote

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.).

New!

Irvine, CA3 days ago

Remote

$55–$55

Equipment will be provided by the client - an agreement must be signed by the candidate once offered on equipment responsibilities This role is responsible for the day-to-day administration of iCIMS, including system configuration, user support and training, troubleshooting, and maintaining data integrity. ATD Technology, LLC is a certified minority woman owned business that creates opportunities to match qualified individuals with client programs while meeting all parties' financial and technical goals.

New!

Irvine, CA1 day ago

Remote

The role also supports reporting and analytics needs, contributes to process improvements, and partners on system updates and enhancements to improve the overall candidate and recruiter experience. This role is responsible for the day-to-day administration of iCIMS, including system configuration, user support and training, troubleshooting, and maintaining data integrity.

New!

Irvine, CA1 day ago

Remote

Fullerton, CA30+ 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.

New!

Norco, CA5 days ago

Full-time

Established in 2013, we bring over a decade of experience delivering technology services and solutions that specialize in web & custom application development, project & program management, mobile & cloud computing services. You will be responsible for providing technical support and assistance to our employees and clients, ensuring the smooth operation of computer systems, networks, and software.

Irvine, CA15 days 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.

City of Industry, California30+ days ago

$105,000–$115,000 Per Year

Rancho Santa Margarita, CA30+ days ago

$71,000–$100,000 Per Year

The Engineer I partners with internal IT teams, project managers, and external unified communications service partners to maintain Applied Medical's existing communications environment while implementing new and enhanced solutions. This role requires deep technical expertise across Voice over Internet Protocol (VoIP) systems, Microsoft unified communications platforms, virtualization, networking, and Session Initiation Protocol (SIP) services.

Murrieta, California14 days ago

Remote

$70,000–$85,000

Acting as the escalation point to the Service Desk for on prem and cloud based needs; troubleshooting of server related issues, installs, security upgrades, support of web based applications. We are seeking a hands-on IT Infrastructure Administrator to support and maintain our customer-facing services, applications, servers, and network environments.

Murrieta, California9 days ago

Remote

$70,000–$85,000

In Addition, hands on experience with Docker (containerization, image management, compose workflows) and Caddy (reverse proxy configuration, HTTPS automation) would be important differentiators. We are seeking a hands-on IT Infrastructure Administrator to support and maintain our customer-facing services, applications, servers, and network environments.

Irvine, CA30+ days ago

We’re also proud to be named one of the Orange County Business Journal’s Fastest Growing Companies, earning the distinction for five consecutive years as we continue to expand into new markets across the U.S. Companies trust CGS to attract, engage, and retain elite technology talent—giving them the advantage they need to lead with confidence in a rapidly evolving digital landscape. CGS Business Solutions is a nationally recognized leader in IT staffing and consulting, delivering top-tier talent across Applications, Cloud & Infrastructure, Cybersecurity, Data & AI, and Engineering.

SAN DIMAS, CA30+ days ago

Oracle Business Intelligence Publisher, Automic Automation Manager, OpenText Exstream, etc.), and integrations with external cloud-based applications such as Oracle Mobile Workforce Management (MWM) system and Customer Web Self-Service (CSS) solutions. May include but not limited to standing, climbing, walking, lifting, bending, pulling and/or pushing, grasping, reaching, stooping and crouching, sitting, typing, walking, reading, writing, color determination, speaking and listening for extended periods of time.

New!

Rosemead, California5 days ago

$35–$45 Per Hour

In regards to the company's labor management systems, including Legion for time management and clock-in/clock-out functionality, and LaborPro for modeling labor deployment across restaurants. While having experience with both systems would be ideal, even basic labor system experience from a junior administrator would be acceptable, as long as the candidate demonstrates enthusiasm and a willingness to learn.

Fountain Valley, CA30+ days ago

$28–$36 Per Hour

Troubleshoots and identifies hardware and software problems in a timely manner; resolves routine problems, replaces defective components, and researches resources to identify solutions. Provide ongoing first and second-level helpdesk support and ticket triage, including problem troubleshooting, customer support, ticket creation, management, and follow-up.

Irvine, CA27 days ago

The position sits within a collaborative IT team and supports a larger group of data users, offering strong exposure to production systems and real-time data operations. This role will focus heavily on SQL Server data management and production support, with responsibilities spanning database performance, backups, and troubleshooting within a cloud-based environment.

Seal Beach, CA14 days ago

The Office Administrator is responsible for performing a wide variety of responsibilities and tasks, including but not limited, to supporting department managers with day-to-day function, such as planning and coordinating events and employee communications, purchasing supplies, and providing administrative support to the organization. Assists DTS managers and Human Resources department with various day-to-day functions including, but not limited to, purchasing supplies, recruiting, onboarding, HRIS updates, payroll, training, employee events and communications.

Irvine, CA30+ days ago

As our Accounting Systems Analyst, you won't just be maintaining software; you will be the primary architect and administrator of our NetSuite ERP and data warehouse. Better Companies is a multi-brand financial services organization providing debt relief, tax support, and business funding solutions.

Rancho Santa Margarita, CA30+ days ago

$110,000–$160,000 Per Year

Manage SAP system lifecycle activities including installation, configuration, upgrades, patching, and maintenance of SAP environments such as SAP S Four HANA, SAP BW Four HANA, SAP Process Integration and Process Orchestration, and SAP Solution Manager. Our unique business model, combined with our dedication to delivering the highest quality products, enables team members to contribute to a larger capacity than is possible in typical positions.

New!

Newport Beach, CA6 days ago

Assist clients and plan participants with plan support needs; Monitor the support contact line, answering an average of 20-30 calls per day, and provide exceptional service to clients and plan participants; Manage multiple inquiries simultaneously and craft communications to clients and plan participants across various channels (telephone, email, fax, mail, etc.); Develop and maintain relationships with clients, trustees, annuity representatives, and plan participants and act as their primary resources for items related to their retirement plans; and. Proactively process enrollment and distribution requests upon receipt while meticulously maintaining and updating database records; Verify client and participant documentation for accuracy and completeness, resolving discrepancies as needed to ensure compliance; Travel to agency sites to present informational orientations for potential plan participants and attend enrollment workshops, as needed based on the volume of new business; and.

Brea, California21 days ago

$123,078–$170,941 Per Year

Perform complex physical and logical database engineering and administration activities including database related project management, installation, administration, performance management, monitoring, backup, restoring, and change management of company’s mission critical RDBMS systems under minimal direction or supervision. Utilize SQL language extensively to design complex database performance solutions and manage large database related projects during tuning and database upgrades.

Buena Park, California12 days ago

$70,000–$80,000

Provide hands-on technical support for telephony systems, end-user devices, and workplace technology. Administer and support business systems, applications, databases, and communications platforms.

Riverside, CA30+ days ago

This role is responsible for managing, maintaining, and optimizing database environments that support C4I systems, AMOSS, ISR platforms, and associated mission applications, ensuring data availability, integrity, security, and performance in alignment with operational requirements. Personnel will deploy to sites including CAMOC in Aguadilla, Puerto Rico, and other CONUS and OCONUS locations to perform installation, troubleshooting, integration, and sustainment of C4I, AMOSS, ISR, and telecommunications systems.

Riverside, CA30+ days ago

Full-time

This role is responsible for managing, maintaining, and optimizing database environments that support C4I systems, AMOSS, ISR platforms, and associated mission applications, ensuring data availability, integrity, security, and performance in alignment with operational requirements. As a Senior Database Administrator, you will play a critical role in designing, building, securing, and operating software solutions that support mission success and operational excellence across Federal Government organizations.

New!

Anaheim, CaliforniaToday

$22–$34.28 Per Hour

The exact starting compensation to be offered will be determined at the time of selecting an applicant for hire, in which a wide range of factors will be considered, including but not limited to, skillset, years of applicable experience, education, credentials and licensure. Founded in 1964, West Anaheim Medical Center is a 219-bed acute-care hospital dedicated to providing the community with high-quality, compassionate healthcare.

Irvine, California30+ days ago

$63,410–$117,348 Per Year

Coordination of the delivery of office services, including maintenance, repairs, cleaning, security, and utilities, in partnership with internal teams, building management, and external service providers. Support the handling of escalated customer complaints and executive‑level inquiries, including matters involving VIP customers, by coordinating information, facilitating resolution, and providing assistance to executives as needed.

New!

Newport Beach, CA4 days ago

$80,000–$90,000 Per Year

You will transform the inbox into a command centre, convert conversations into tracked actions, oversee lease and compliance schedules, and ensure 100% follow through so the CEO can focus on strategy and growth. With ambitious growth plans and a collaborative corporate team of 7, they are investing in a dedicated Executive Administrator to the CEO to strengthen structure, accountability, and operational discipline at the top of the organisation.

Chino, California30+ days ago

$18–$23 Per Hour

Overview: About Model 1 Commercial Vehicles: Since we got our start in 1980, Model 1 Commercial Vehicles has grown to become the nation’s largest dealership, representing more than 20 top manufacturers across the U.S. And we did it all by listening to and investing in customers like you. This role serves as a central point of coordination between sales, customers, finance, DMV, transportation, and internal teams to ensure accuracy, compliance, and timely execution of sales transactions.

Corona, CA30+ days ago

The Campus Administrator works a part-time rhythm that blends administrative support, coordination, and operational oversight, primarily on weekdays with periodic weekend coverage tied to services and key campus moments. The end of the week is dedicated to preparation for weekend services, final confirmations, and supporting campus readiness, with flexibility during special events, holidays, and seasonal ministry needs.

Irvine, CA9 days ago

$23–$24 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. Job Overview:This Community Administrator provides administrative services to the management team, Boards of Directors, Committees, Homeowners, Vendors, and other related parties as needed and for the daily operations of the organization.

Brea, California29 days ago

$28–$33 Per Hour

The Payroll Administrator plays a crucial role in supporting the accurate and timely processing of weekly multi-state payroll for CoolSys, with a strong emphasis on providing excellent customer service to employees. • Communicate proactively and professionally with field employees, supervisors, and managers to address payroll concerns and ensure a positive employee experience.

Newport Beach, CA30+ days ago

$160,000–$175,000

From lively Slack channels that keep teams connected to memorable events like our Summer Beach Party, Chili Cook-Off, Holiday Yacht Party, and impromptu office potlucks, we believe in celebrating success and enjoying the journey together. Design schemas, optimize queries, and tune databases to ensure high performance, availability, and scalability for production workloads.

Fountain Valley, CA27 days ago

$30–$40 Per Hour

The Payroll Administrator is responsible for accurate and timely data entry to ensure accurate calculation of payroll. Provide information to employees/managers on payroll matters; tax issues and related payroll inquiries.

Los Alamitos, CA30+ days ago

$27–$35 Per Hour

The ideal candidate is a highly organized and proactive HR professional who is comfortable working with large volumes of data, maintaining employee records, and supporting HR operational processes. This role is critical to addressing existing HR data backlogs, cleaning up employee files, and preparing HR systems for upcoming organizational and technology changes.

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Systems Administrator Jobs in Corona, CA

Contracts Administrator 804 Technology

Sr. Contract Administrator Vaco LLC

Payroll Administrator Vaco LLC

IT Manager (Manufacturing Preferred) Jobot

Accounts Receivable Administrator Nucor

Windows Systems Administrator, Senior Bowhead / UIC Technical Services

IT Systems Administrator -4083

IT Systems Administrator Ledgent Technology

IT Systems Administrator cFive Solutions, Inc

Systems Administrator Computer Concepts

Systems Administrator Peraton

Financial Systems Administrator Fisher & Phillips LLP

IT Systems Administrator Ease Inc

IT Business Systems Administrator - HYBRID DB Insurance Co., Ltd.

Systems Administrator - ICIMS Software Guidance & Assistance

Systems Administrator - ICIMS SGA Inc.

System Administrator Tailored Technology Services

Systems Administrator (Remote) ATD Technology LLC

Systems Administrator (remote) SOMERSET STAFFING

Systems Administrator (remote) Blue Ribbon Global Technologies

System Administrator Jobot

Junior System Administrator DT Professional Services

Systems Support Administrator FirstService Residential

Systems & Network Administration Quinn Company

Unified Communications and Telephony Administrator Applied Medical

Remote Linux Administrator (Docker) Ledgent Technology

Remote Linux Administrator (open source) Ledgent Technology

MS SQL DBA CGS Business Solutions

Senior Systems Analyst (123.25) American States Water Company

System Admin (Labor Systems) Ledgent Technology

IT Helpdesk Administrator Motive Companies

SQL Database Administrator Strategic Employment

Office Administrator Diversified Technical Systems, Inc.

Accounting Systems Analyst Better Debt Solutions

Senior SAP Basis Team Administrator Applied Medical

Plan Support Administrator Public Agency Retirement Services

Microsoft SQL Sr DBA Mercury Insurance Services, LLC

IT Administrator Ledgent Technology

AMOC Senior Database Administrator III Planned Systems International, Inc.

Senior Database Administrator III (DBA) – Secret Clearance| Riverside, CA Cambridge International Systems Inc

Network Administrator West Anaheim Medical Center

Executive Administrator - HYBRID AIS Insurance Specialists

Executive Administrator Cobalt Search

Retail Sales Administrator Model1 Commercial Vehicles, Inc.

Corona Campus Administrator Patria Church

Community Administrator FirstService Residential

Payroll Administrator CoolSys

Senior DBA SmartFinancial

Payroll Administrator Motive Companies

HR Operations Administrator KORE1 Technologies

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