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7 desktop administrator jobs at 7 companies in Costa Mesa, CA

2w
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IT Systems Administrator
Riverside, California, United States
$110k-$130k/yr OnsiteFull Time
ENC
ENC: Rivaz-owned U.S. heavy-duty transit bus manufacturer serving public agencies, universities, airports, and private fleet operators.
3+ YOERequires 3+ years of desktop and systems support, Windows laptops and servers, Microsoft 365, Active Directory, Hyper-V, networking, security, documentation, and customer-service skills.
Windows 10, Windows 11, Windows Server 2025, Microsoft Hyper-V, Microsoft 365, Active Directory, Microsoft Entra ID, Group Policy, Exchange Online, Teams, SharePoint, OneDrive, DNS, DHCP, RingCentral, Cisco, Cisco Meraki, Unitrends, TeamViewer, VPN, VLANs
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2mo
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IT Site Administrator
Carlsbad or Fairhaven
$76k-$99k/yr OnsiteFull Time
Acushnet Company
Acushnet Company: Private American golf-equipment and golf-wear manufacturer serving dedicated and recreational golfers worldwide.
5+ YOEBachelor's degree (Information Systems/Computer Science) or equivalent, MCSE preferred, 5+ years supporting mission-critical desktop/server/enterprise environments, project coordination, backups, security, and 24x7 on-call participation.
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1w
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Onsite IT Systems Administrator / IT Support Specialist
Rancho Santa Margarita, California, United States
$35-$55/hr OnsiteFull Time
Melissa
Melissa: Private U.S. data-quality technology helping organizations verify, cleanse, enrich, and manage customer and identity data.
Experience administering Windows, Linux, Hyper-V, servers, desktops, VPN, Active Directory, Exchange, hardware, networking, security, updates, backups, and compliance documentation; strong communication and problem-solving skills.
Windows, Linux, Hyper-V, VPN, MS Office, Dell, PERC, Hardware RAID, RAID, Windows Active Directory, MS Exchange, Ubuntu, Debian, AWS, Azure, HP, Aruba, Ethernet, SOC2, ISO 27001, FedRAMP, E-Verify
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ADMINISTRATIVE SUPPORT ASSISTANT (EFMP), NF-3
Camp Pendleton, California, United States
$46k-$51k/yr OnsiteFull Time, Part Time
Marine Corps Community Services
Marine Corps Community Services: Official morale, welfare, and recreation program for the Marine Corps.
3+ YOEThree years of related administrative experience, project coordination, naval correspondence, presentation preparation, interpersonal skills, and proficiency with word processing, email, databases, desktop publishing, and internet applications.
Microsoft Word, email, database management, desktop publishing, internet navigation
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Secretary II
San Bernardino, California, United States
$28-$34/hr OnsiteFull Time
San Bernardino City Unified School District
San Bernardino City Unified School District: Public K–12 school district serving students and families in San Bernardino and nearby communities.
3+ YOERequires high school graduation or equivalent and three years of paid clerical or secretarial experience, or 30 months of district Clerk II-level experience.
desktop computer, typewriter, copier
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Sales Manager Assistant
Newport Beach, California, United States
$72k-$100k/yr OnsiteFull Time
Aston Martin Newport Beach
Aston Martin Newport Beach: An automotive dealership group representing luxury vehicle brands and delivering customer-focused sales experiences.
2+ YOERequires 2–4 years of administrative services or related experience, desktop tool proficiency, multitasking, organization, prioritization, and attention to detail; dealership experience is a plus.
Microsoft Office
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1mo
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Senior IT Support Specialist
Irvine, California, United States
$75k-$85k/yr OnsiteFull Time
Fluxergy
Fluxergy: Private U.S. in vitro diagnostics developing multimodal point-of-care testing platforms for human, veterinary, and food-safety users.
6+ YOE6+ years supporting Windows desktops and Microsoft 365 administration; advanced troubleshooting across endpoints, networking, and Microsoft Intune; strong communication and executive support skills.
Microsoft 365, Entra ID (Azure AD), Exchange Online, Microsoft Intune, SharePoint, OneDrive, Microsoft Teams, Windows 10, Windows 11, macOS, ManageEngine ServiceDesk, CrowdStrike, SentinelOne, Darktrace, PowerShell
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