12 it system administrator jobs at 11 companies in Calimesa, CA
3w
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IT System Administrator
Irvine, California, United States
$97k-$119k/hr OnsiteFull Time
7+ YOE7+ years systems administration and infrastructure experience supporting Windows Server, virtualization, cloud, networking and OT (PLCs/SCADA); Bachelor\u0002s or equivalent experience; preferred networking and security certifications.
Windows Server, Active Directory, DNS, DHCP, VMware, Hyper-V, Azure, Microsoft M365, PLCs, SCADA, HMI, TCP/IP, VLANs, Firewall, VPN
1d
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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
4w
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IT Services Administrator
Brea, California, United States
$71k-$80k/yr OnsiteFull Time
5+ YOEBachelor's degree or equivalent, 5+ years systems/IT infrastructure experience, experience with enterprise/ERP systems (SAP preferred), familiarity with AI productivity tools, strong security and troubleshooting skills.
SAP S/4HANA, SAP Joule, Microsoft Copilot, ChatGPT
2d
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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
4w
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IT Systems Administrator / AWS Infrastructure Specialist
Rancho Santa Margarita, California, United States
$45-$65/hr HybridFull Time
Experience administering AWS, Linux (Ubuntu), Windows, Kubernetes and Docker; familiarity with EC2, ALB, EKS and Alibaba Cloud; participation in SOC2/ISO 27001/FedRAMP compliance; OSCAL/documentation automation; on-call support availability.
AWS, EC2, ALB, EKS, Alibaba Cloud, Kubernetes, Docker, Ubuntu, Linux, Windows, OSCAL (Open Security Controls Assessment Language), hypervisors
3w
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Senior IT Engineer
Irvine, California, United States
$140k-$180k/yr OnsiteFull Time
5+ YOE5+ years in IT operations or systems administration, expert scripting/automation (PowerShell, Python, Bash), config management (Ansible/Puppet/Chef), Windows and Linux administration, networking and virtualization, Azure AD/Entra ID and MDM experience, ability to obtain US security authorization.
Microsoft PowerShell, Python, Bash, Ansible, Puppet, Chef, Terraform, Git, Azure, AWS, Hyper-V, VMware, Microsoft Azure AD, Entra ID, MDM, Windows, Linux
2mo
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IT Audio Visual Student Assistant
Fullerton, California, United States
$17-$24/hr OnsiteTemporary, Part Time
0+ YOECurrent CSUF student; enrolled for regular semester; able to work in the United States; strong AV system knowledge; able to start immediately.
Audio Visual equipment, Digital signage, Video/Conference systems, Computers
3w
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TEMP IT Team Lead
Irvine, California, United States
$40-$48/hr OnsiteFull Time
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
3mo
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IT Support Specialist II
Irvine, California, United States
$25-$32/hr OnsitePart Time
3+ YOEBachelor's in IT/Cybersecurity or related field; 3-5 years IT support/system administration or junior cybersecurity; Microsoft 365 experience; Systems Technician work (Intune); regulated/government contracting experience a plus; CompTIA Security+/Network+ or Azure fundamentals a plus.
Microsoft 365, Azure, Intune, Identity protection systems
2w
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Sr Specialist, IT Applications Operations Systems
Aliso Viejo, California, United States
$107k-$142k/yr OnsiteFull Time
5+ YOEBachelor's in CS/IS/Business/Engineering; 5+ years technical lead experience implementing enterprise operations systems (PTC Windchill preferred); experience with CAD/PLM/MES/ERP, SQL, HTML/CSS, application administration, testing, and security.
PTC Windchill, CAD, PLM, MES, ERP, HTML, CSS, SQL
4w
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IT Support Services II - Help Desk
Palm Springs, California, United States
OnsiteFull Time
3+ YOE3+ years IT support or system administration experience, knowledge of Windows/Linux/macOS, networking (TCP/IP,DNS,DHCP,VPN), helpdesk tools, strong communication and troubleshooting skills.
Windows Server, Linux, macOS, TCP/IP, DNS, DHCP, VPN, ServiceNow, JIRA, Zendesk, ConnectWise, AWS, Azure, VMware, Hyper-V
4w
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IT Support Services II - Help Desk
Palm Desert, California, United States
OnsiteFull Time
3+ YOE3+ years IT support or system administration experience; bachelor’s degree or equivalent preferred; strong OS, networking, helpdesk, and troubleshooting skills; experience with ServiceNow/JIRA/Zendesk and cloud/virtualization technologies.
Windows Server, Linux, macOS, ServiceNow, JIRA, Zendesk, ConnectWise, AWS, Azure, VMware, Hyper-V, TCP/IP, DNS, DHCP, VPN