17 active directory administrator jobs at 17 companies in Sun City, CA

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Systems Administrator
Brea, California, United States
$85k-$120k/yr OnsiteFull Time
Air Treatment Corporation
Air Treatment Corporation: Employee-owned HVAC and refrigeration manufacturer’s representative serving engineers, contractors, building owners, and commercial facilities.
Bachelor's degree or equivalent experience, systems administration experience, Windows Server, Hyper-V, networking, security, cloud platforms, scripting, Active Directory, backups, and on-call support.
Windows Server, Windows Hyper-V, AWS, Azure, Bash, PowerShell, Python, Active Directory, Group Policy, Microsoft Certified Solutions Expert (MCSE)
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Systems Administrator
La Jolla or Temecula or El Segundo or Beverly Hills or Newport Beach or San Diego or San Diego or California
$91k-$122k/yr OnsiteFull Time
CalPrivate Bank
CalPrivate Bank: Private commercial and private bank serving successful individuals, businesses, entrepreneurs, and trusted advisors in coastal Southern California.
Several years of systems administration or enterprise IT support experience, with strong Windows Server, Active Directory, VMware, Entra ID, Intune, networking, backup, security, troubleshooting, and documentation expertise.
Active Directory, VMware, Microsoft Entra ID, Microsoft Intune, DHCP, DNS, Windows Server, Group Policy, IAM, PAM, VPN, LAN/WAN, TCP/IP
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Senior Systems Administrator
Anaheim, California, United States
$85k-$105k/yr OnsiteFull Time
Quantum ePay
Quantum ePay: Quantum ePay is a private U.S. fintech and payment processor serving merchants with in-person, online, and eCommerce payments.
5+ YOE5+ years systems administration experience with Microsoft 365, Active Directory, Windows, networking, endpoint security, backups, and documentation; strong troubleshooting and communication skills.
Microsoft 365, Active Directory, Windows, DNS, DHCP, VPN, PowerShell, SIEM, EDR/MDR
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Site IT System Administrator
Chino, California, United States
$80k-$105k/yr HybridFull Time
Luna Innovations
Luna InnovationsOTC Expert Market: LUNA: Fiber-optic technology providing sensing, test, measurement, monitoring, and control systems for industrial customers.
3+ YOERequires 3+ years in IT support or systems administration, Windows, Active Directory, networking, Windows Server, virtualization, asset and vendor management, and an associate-level IT education or equivalent experience.
Active Directory, Microsoft Entra ID, Windows Server, Microsoft 365, Microsoft Azure, VMware, Hyper-V, Microsoft Office, DNS, DHCP, VPN, Intune, SonicWall, CompTIA A+, CompTIA Network+, CompTIA Security+
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Sr. Systems Administrator
Vista, California, United States
$73k-$143k/yr OnsiteFull Time
Watkins Wellness
Watkins Wellness: Manufacturer of hot tubs, saunas, swim spas, and aquatic fitness products.
5+ YOE5–7 years IT experience; strong Microsoft Active Directory, SCCM/Intune, Azure, VMware vSphere, PowerShell, Okta/EntraID, and cybersecurity knowledge; college degree or IT certification preferred.
Microsoft Active Directory, DNS, DHCP, Group Policy, EntraID, Microsoft SCCM, Microsoft Intune, Azure, VMware vSphere, Okta, PowerShell
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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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Service Desk Administrator
Johnston or Melbourne or Tempe or Austin or Aurora or Greenwood Village or Corona or St. Paul or St. Louis or Sioux Falls or McHenry or Houston or Cedar Rapids
$50k-$81k/yr OnsiteFull Time
HR Green
HR Green: Private U.S. civil engineering firm providing planning, design, and consulting services to public and private-sector clients.
1+ YOE1–5 years help desk/IT support experience; working knowledge of Windows 11, Microsoft 365, Citrix, SCCM, Active Directory; valid driver’s license and reliable transportation.
Windows 11, Microsoft 365, Outlook, Teams, OneDrive, Citrix, SCCM, Active Directory, Entra ID (Azure AD)
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IT & Systems Administrator - SoCal Region
San Diego or Vista or San Juan Capistrano or Redondo Beach or Orange or Oceanside or California
$38-$46/hr HybridFull Time
Devil Mountain Wholesale Nursery
Devil Mountain Wholesale Nursery: Private wholesale nursery supplying plants and trees to California landscape professionals, contractors, designers, municipalities, and end users.
5+ YOERequires 5+ years of IT administration and end-user support, Microsoft 365 and Entra ID experience, endpoint management, PowerShell, Windows Server, Active Directory, networking, a California driver's license, and regular regional travel.
Microsoft 365, Exchange Online, Microsoft SharePoint, OneDrive, Microsoft Teams, Entra ID (Azure AD), Entra Connect, Active Directory, Microsoft Intune, PowerShell, NetSuite, Celigo, RingCentral, Point-of-sale systems, Windows Server, RMM, VMWare, MS-102, AZ-104, SC-300, MD-102
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Senior IT Network and Security Administrator Engineer
Placentia, California, United States
$100k-$135k/yr OnsiteFull Time
Arlon Graphics
Arlon Graphics: Manufacturing Graphic Films & Providing Easy Solutions for Your Real-World Applications
7+ YOEBachelor's degree in computer science,7+ years relevant experience,knowledge of networks,Windows servers,VMware,Active Directory,network security,backup and disaster recovery,telecom,ITIL and strong communication skills.
VMware, Active Directory, Microsoft Outlook, Mimecast, Avaya
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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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IT Systems & Facilities Administrator
Irvine or Inglewood or Long Beach or Los Angeles or Riverside or Oakland
$30/hr HybridFull Time
Irvine Clinical Research
Irvine Clinical Research: Independent clinical research site network studying memory loss, depression, obesity, neurology, and psychiatry for participants and sponsors.
1+ YOEBachelor's degree or equivalent technical experience; 1+ year administering Windows, Active Directory, Google Workspace, and Microsoft 365. Requires networking, cybersecurity, hardware troubleshooting, California driver's license, and ability to lift 50+ lbs.
Microsoft Active Directory, Google Workspace, Microsoft 365, Windows OS, Multi-Factor Authentication (MFA), Endpoint Detection & Response (EDR), routers, switches, Wi-Fi access points, VOIP, CTMS, CRM, webcams, microphones, headsets, DNS, temperature sensors, gateways, backup batteries, appliance dollies, hand trucks, moving straps, Home Depot, Enterprise
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MSP Systems Asministrator - On-Site in Huntington Beach
Huntington Beach, California, United States
OnsiteFull Time
CAL IT Group
CAL IT Group: Managed IT service provider delivering cybersecurity, cloud, communications, and consulting services to California businesses.
4+ YOE4+ years systems/infrastructure experience (MSP preferred); Microsoft certifications (MCSA, AZ-104, MS-102) or equivalent; hands-on Windows Server, Active Directory, Microsoft 365, virtualization, Azure/AWS, networking, backup/DR; valid driver's license; on-call participation.
Windows Server 2016, Windows Server 2019, Windows Server 2022, Active Directory, Group Policy, DNS, DHCP, VMware ESXi, Hyper-V, Microsoft Azure, Microsoft 365, Datto, Veeam, Acronis
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Help Desk Technician
Foothill Ranch, California, United States
$28-$31/hr HybridFull Time
Lentegrity
Lentegrity: Independent automotive loan provider serving borrowers and dealerships through indirect vehicle financing.
Diagnose complex computer issues; working knowledge of Active Directory, LAN, wireless technologies, Azure, Azure AD, Windows systems administration, and cloud or physical infrastructure preferred.
Microsoft Active Directory, LAN, Azure, Azure AD, Windows Systems Administrator, Server, Microsoft 365
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TEMP IT Team Lead
Irvine, California, United States
$40-$48/hr OnsiteFull Time
EMCOR Services Mesa Energy
EMCOR Services Mesa Energy: Wholly owned EMCOR subsidiary serving commercial clients with HVAC, building automation, chiller, retrofit, energy, and solar services.
3+ YOE1+ MgmtBachelor's in IT/CS required; 3+ years IT support/systems administration, 1+ year supervisory experience; strong networking, Windows/macOS, Active Directory, Microsoft 365 skills; excellent communication and leadership.
Windows, macOS, Active Directory, Microsoft 365
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IT Support Specialist II (2207)
Tustin, California, United States
$58k-$81k/yr HybridFull Time
Virgin Galactic
Virgin GalacticNew York Stock Exchange: SPCE: Public aerospace providing reusable suborbital spaceflights and research missions for private astronauts, researchers, and government agencies.
3+ YOE3+ years IT support for 500+ employees, Microsoft/CompTIA certs, Active Directory and Microsoft 365 administration, Windows and macOS support, endpoint imaging (Acronis), ticketing experience, strong communication and troubleshooting skills.
Active Directory, Microsoft Exchange 365, Microsoft Office 365, WAN/LAN topology, Antivirus, Acronis, Microsoft 365, Windows 11, Outlook, Teams, Zoom, OneDrive, SharePoint, MacOS, Windows 10
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IT Site Manager
City of Industry, California, United States
$130k-$150k/yr OnsiteFull Time
Utility Trailer Manufacturing Company
Utility Trailer Manufacturing Company: America's oldest privately owned, family-operated trailer manufacturer.
7+ YOE3+ MgmtBachelor’s degree required; 7+ years in IT infrastructure or systems administration and 3–5+ years in leadership. Requires Windows Server, Hyper-V, Active Directory, Azure, Microsoft 365, and hybrid-environment experience.
Windows Server, Hyper-V, Active Directory, Azure AD, Entra ID, Microsoft Azure, Microsoft 365, Microsoft Exchange Online, Microsoft Teams, Microsoft SharePoint, AS400, IBM i, ERP, SIEM
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IT Security Analyst
Huntington Beach or Farmers Branch
$110k-$130k/yr HybridFull Time
Confie
Confie: National personal lines insurance brokerage and retail agency.
4+ YOE4+ years IT security experience; perform risk assessments, security analysis, remediation planning, server administration, and incident response. Knowledge of network security, UTM/IPS/IDS, Linux, VMware, and Microsoft Active Directory.
Linux, VMware ESX/Vsphere, Microsoft Windows Active Directory, UTM, IPS, IDS, TCP/IP, MPLS, VoIP, Firewalls, routers, PCO, SOX