245 systems administrator jobs at 186 companies in Sun City, CA
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Systems Administrator
Brea, California, United States
$85k-$120k/yr OnsiteFull Time
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)
1w
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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
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
5d
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Systems Administrator
Brea, California, United States
$95k-$125k/yr OnsiteFull Time
Hands-on hybrid cloud, Azure, networking, Windows Server, and security administration experience; active Secret clearance, U.S. citizenship, and CompTIA Security+ required.
Microsoft Azure, Entra ID, Microsoft Intune, PowerShell, Windows Server, Active Directory, Azure Foundry, Microsoft Purview, Microsoft Defender, Copilot, CMMC, NIST 800-171, RADIUS, VLAN, ACL, WAN, SSP, POA&M
1mo
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Senior Systems Administrator
Anaheim, California, United States
$85k-$105k/yr OnsiteFull Time
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
2mo
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Senior Systems Administrator
Costa Mesa, California, United States
$146k-$194k/yr OnsiteFull Time
8+ YOE8+ years designing and implementing classified IT systems; experience with air-gapped systems, physical hardware, virtualization (VMware/Podman), Windows and Linux administration, DISA STIG hardening, NIST 800-53/RMF familiarity, automation, DoD 8570/8140 baseline certification, and active U.S. Top Secret clearance.
Lattice OS, Microsoft Windows, Microsoft Windows Server, Linux, VMware, Podman, Ansible, DISA STIGs, NIST 800-53, Risk Management Framework (RMF)
2w
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Systems Administrator - Surveillance
Highland, California, United States
OnsiteFull Time
2+ YOEBachelor's degree in computer science, information technology, or related field; 2+ years of relevant technical experience; systems administration expertise; valid driver's license; English proficiency; required fiber optic and Genetec certifications.
Microsoft Windows Server, VMware, vSphere, vCenter, SQL Server, Active Directory, SAN, NAS, DAS, Fiber Channel (FC), iSCSI, Palo Alto, Pure Storage, Dell Isilon, Cisco, ESXi, Extreme switching, SolarWinds, Dynatrace, Genetec, Microsoft Certified Systems Engineer (MCSE), Microsoft Certified Systems Administrator (MCSA), Cisco Certified Network Associate (CCNA), Extreme Networks, Extreme Networks Associate (XNA), Extreme Certified Specialist (ECS), Extreme Design Specialist (EDS)
3mo
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IT Systems Administrator
Seal Beach, California, United States
$86k-$150k/yr OnsiteFull Time
3+ YOE3+ years in IT systems administration with cross-platform support (macOS, Windows, Linux); network administration; IAM; cloud and SaaS management; ITAR/CMMC awareness.
macOS, Windows, Linux, routing, switching, VPNs, firewalls, wireless, Active Directory, Azure AD, Okta, AWS, GCP, Azure, Google Workspace, Microsoft 365, Slack, Zoom, GitHub, Bash, PowerShell, Python, Jamf, Intune, NIST CSF, CIS Controls, CompTIA Security+, Network+
21h
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Systems Administrator (Systems Administrator II), Enterprise and Cloud Services
San Bernardino, California, United States
$6k-$9k/mo OnsiteFull Time
2+ YOEBachelor's degree in a related field and 2 years of relevant experience, or equivalent substitutions. Requires system administration, cloud, troubleshooting, communication, analytical, and organizational skills.
Adobe Sign, NCS, SimpleK, SMS, Vanderbilt, Sunbelt, WebTMA, Qualtrics, Gradescope, Microsoft 365, Microsoft Intune, Google, Software-as-a-Service (SaaS), Information Technology Services (ITS), ITIL, ADA, HIPAA, FERPA
3w
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IT Systems Administrator II
Garden Grove, California, United States
OnsiteFull Time
2+ YOERequires 2+ years in Windows systems or network administration and two or more relevant certifications, such as CompTIA A+, CompTIA Network+, MCSA, or CCNA. Bachelor's degree or equivalent experience desired.
Active Directory, Entra ID, Hyper-V, VMware, Microsoft 365, Zoom Phone, Contact Center, Google Workspace, Windows Server, OS X, Linux, UniFi Access Points, UniFi Cameras, Checkpoint Harmony Endpoint Protection, Checkpoint Harmony Email & Collaboration, Ubiquiti UniFi, Exchange Online, Windows 365, Windows Sandbox
2w
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IT Systems Administrator
Riverside, California, United States
$110k-$130k/yr OnsiteFull Time
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
1mo
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Systems Administrator II
Anaheim, California, United States
OnsiteFull Time
3+ YOE3+ years IT user support experience preferred; working knowledge of TCP/IP, DNS, DHCP; experience with Windows servers, ITSM; bachelor’s degree or equivalent; ability to lift 25 lb and travel occasionally.
Windows, OT, IoT, TCP/IP, DNS, DHCP, ITSM, ITIL 4 Foundation
1mo
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Sr. Systems Administrator
Vista, California, United States
$73k-$143k/yr OnsiteFull Time
5+ YOE5–7 years IT experience supporting servers, OS, endpoint management and virtualization. Requires AD, SCCM/Intune, Azure, VMware, identity management and strong cybersecurity and troubleshooting skills.
Microsoft Active Directory, DNS, DHCP, Group Policy, EntraID, Microsoft SCCM, Microsoft Intune, Microsoft Azure, VMware vSphere, Okta, PowerShell
1mo
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Sr. Systems Administrator
Vista, California, United States
$73k-$143k/yr OnsiteFull Time
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
3mo
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Aviation Systems Administrator
Moreno Valley, California, United States
$90k-$125k/yr HybridFull Time
3+ YOE3+ years administering AMOS or similar aviation maintenance system; SQL proficiency; enterprise software config; aviation maintenance knowledge (Parts 43/91/121/145); user training; data integrity; Excel proficiency.
AMOS, FL3XX, iQSMS, D365, SQL, Microsoft Excel, Power BI
1mo
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District Network Systems Administrator
Mission Viejo, California, United States
$9k-$13k/mo OnsiteFull Time
4+ YOEAdminister and maintain district LAN/WAN, design network solutions, troubleshoot network issues, prepare technical specifications, and collaborate with campus network administrators.
Windows, Linux, network management software, web server software, anti-virus servers
1mo
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Systems Administrator II (Full Time)
Rancho Mirage, California, United States
OnsiteFull Time
3+ YOE3+ years property/user support experience; familiarity with PC hardware, Microsoft networks, Microsoft Operating Systems, Microsoft Exchange, Microsoft Office Suite and MAC OS; MCP preferred; strong verbal and written communication.
Microsoft Exchange, Microsoft Office Suite, Microsoft Operating Systems, MAC OS
1mo
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Systems Administrator II (Full Time) (36382)
Rancho Mirage, California, United States
OnsiteFull Time
3+ YOE3+ years property/user support experience; familiarity with PC hardware, Microsoft networks, Microsoft Operating Systems, Microsoft Exchange, Microsoft Office Suite, and Mac OS; strong verbal and written communication.
Microsoft Exchange, Microsoft Office Suite, Mac OS, Microsoft networks
2w
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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
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
1mo
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Retail Systems Support Administrator
Irvine, California, United States
$23-$26/hr OnsiteFull Time
2+ YOE2+ years with Epicor/Aptos or enterprise POS, strong communication and customer service, Bachelor's in CS/Business or equivalent experience, MS Office proficiency, ability to translate complex concepts.
Epicor, Aptos, POS, Microsoft Office Suite
4w
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10041 - Engineering Systems Administrator - Identity Access Management (IAM)
Irvine, California, United States
$100k-$125k/yr OnsiteFull Time
5+ YOEBachelor's degree or 5+ years equivalent experience; experience administering IAM platforms, scripting automation, RBAC, SSO/MFA, and compliance; strong analytical and communication skills.
Microsoft Entra ID (Azure AD), Active Directory, PowerShell, Microsoft Graph, Group Policy, SAML, OAuth, OpenID Connect (OIDC), LDAP, SCIM, Privileged Access Management (PAM), SSO, MFA
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