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38 infrastructure administrator jobs at 31 companies in San Clemente, CA

1mo
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Infrastructure Deployment Administrator
Costa Mesa, California, United States
$129k-$171k/yr FieldFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
3+ YOE3+ years implementing and supporting IP networks (BGP/OSPF); hands-on experience with Cisco/Arista and Palo Alto; familiarity with Linux/Windows/VMware/cloud; scripting/automation experience; able to travel ~40%, lift 40 lbs, and obtain Secret clearance.
Lattice OS, BGP, OSPF, VRFs, VLANs, VXLAN, STP, EtherChannel, IOS XE, NXOS, EOS, Palo Alto, Panorama, NGFW, Red Hat Enterprise Linux, Windows Server (2022, 2025), VMware (vSphere), VMware ESXi, Azure, AWS, GCP, Linux KVM, Hyper-V, Docker, Python, Nornir, Jinja, Ansible, Terraform
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3w
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Network & Infrastructure Administrator
Rancho Dominguez, California, United States
OnsiteFull Time
IDEMIA
IDEMIA: Identity and security solutions using biometrics and cryptography.
Installs and maintains operating systems, servers, virtualisation, network devices and backup systems; troubleshoots issues, follows change management and documents activities; supports governance and security standards.
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2w
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Systems Administrator- Engineering & Infrastructure
Santa Fe Springs or Los Angeles
$90k-$120k/yr OnsiteFull Time
Votaw Precision Technologies
Votaw Precision Technologies: Manufacturing precision components and assemblies for aerospace and defense
3+ YOEBachelor's degree or equivalent experience; 3+ years writing SQL queries and stored procedures; reporting tools experience; systems administration expertise; U.S. person status and ability to obtain a security clearance.
FlexLM, Microsoft GCC High, Entra, Microsoft Intune, Mobile Device Management (MDM), CATIA, NX, Windchill, Teamcenter, AWS GovCloud, SQL, Tableau, Microsoft Power BI, SQL Server Reporting Services (SSRS), Epicor ERP, NIST 800-171, CMMC, ITAR
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5d
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Infrastructure Engineer
Corona or Norco
$115k-$135k/yr OnsiteFull Time
Bowhead
Bowhead: Federal government contracting and professional services provider.
4+ YOEBachelor's degree in a relevant field, 4 years of system administration experience, 3 years installing patches and managing system updates, IAT Level II certification, and Secret clearance required.
Microsoft Windows, Linux, Unix, Microsoft Office Suite, firewalls, anti-virus, intrusion detection services
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2mo
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IS System Administrator
Temecula, California, United States
$123k-$135k/yr OnsiteFull Time
Universal Health Services
Universal Health ServicesNYSE: UHS: Operates acute care hospitals and behavioral health facilities.
IT systems administration; AD governance; Azure; VDI; enterprise infrastructure experience.
Active Directory, Azure, VMware Horizon, VDI, Enterprise Cloud Identity, Hypervisor
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1w
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Network Administrator
Rancho Cucamonga, California, United States
$122k-$159k/yr OnsiteFull Time
Cucamonga Valley Water District
Cucamonga Valley Water District: Provides water, wastewater, and recycled water utility services.
5+ YOERequires 5 years of enterprise systems and LAN/WAN administration experience, a bachelor's degree, CCNA or CCNP, California Class C driver's license, and expertise in networks, cloud infrastructure, Windows servers, security, and Microsoft O365.
SIEM, IPS, NIST, CIS, ISO 27001, COBIT, PCI DSS, Microsoft O365, Active Directory, Windows, LAN, WAN, Intranet, Internet, VMware, Palo Alto, Microsoft
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3w
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Capital Infrastructure Projects Professional
Irvine, California, United States
$137k-$150k/yr FieldFull Time
Jacobs
JacobsNYSE: J: Global provider of professional engineering and technical services.
2+ YOEMaster's in Civil Engineering or related (or Bachelor's + additional experience), 2+ years relevant experience, knowledge of traffic/transportation infrastructure, construction contract administration, and project documentation.
Microsoft Excel, VBA, Microsoft Office, Procore, Bluebeam, ArcGIS, Caltrans CEM forms, Primavera P6
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3mo
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IT System Administrator
Commerce, California, United States
$55k-$59k/yr OnsiteFull Time
JWCH Institute
JWCH Institute: Provides medical care and social services to underserved populations.
3+ YOE3+ years Windows server administration; associate degree or equivalent experience; strong AD, EHR, and IT infrastructure skills.
Windows Server, Active Directory, Office 365, NextGen EHR, EDR, Care Sentry, Welligent, Casewatch, antivirus, backup, monitoring
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1mo
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IT System Administrator
Irvine, California, United States
$97k-$119k/hr OnsiteFull Time
CTC Global
CTC Global: Manufactures advanced composite cores for high-voltage electricity transmission cables.
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
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3d
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System Administrator II
Colorado Springs or Irvine or Denver or Indianapolis or Grand Rapids or Lexington or Los Angeles or Louisville or Texas or San Francisco or United States
$110k-$120k/yr OnsiteFull Time
Trace3
Trace3: Provides IT consulting and technology solutions for enterprise digital transformation.
3+ YOERequires 3–5 years of Windows or Linux systems administration, Security+ certification, bachelor's degree or equivalent experience, Secret clearance eligibility, and enterprise infrastructure experience.
Active Directory, DNS, DHCP, Group Policy, VMware vSphere, ESXi, Hyper-V, Azure, AWS, GCC High, STIG, IAVA, NIST, FedRAMP, CMMC, RMF, PowerShell, Bash, Python, Ansible, SCCM, MECM, Chef, Puppet
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1w
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CMDB Administrator
Costa Mesa or Coppell
$110k-$146k/yr OnsiteFull Time
Auto Club Enterprises
Auto Club Enterprises: Provides roadside assistance, insurance, and travel services to members.
3+ YOERequires 3–5 years of CMDB, ITSM, or infrastructure experience; ServiceNow or BMC Helix proficiency; reconciliation, normalization, data modeling, troubleshooting, documentation, and governance skills.
BMC Helix CMDB, BMC Discovery, SCCM, Flexera, MS-SQL, ServiceNow, PowerShell, Python
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3w
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IT Database Administrator Sr.
Irvine, California, United States
$104k-$174k/yr HybridFull Time
Panasonic Avionics Corporation
Panasonic Avionics CorporationTokyo Stock Exchange: 6752: Provides in-flight entertainment and connectivity systems for airlines.
5+ YOERequires a related bachelor's degree and/or Microsoft SQL certifications, 5+ years of Microsoft SQL Server administration and enterprise distributed computing experience, and strong PowerShell, T-SQL, Azure, VMware, and database infrastructure skills.
Microsoft SQL Server, SQL Server 2019, Azure SQL, PowerShell, T-SQL, VMware, Microsoft Windows Server, IaaS, PaaS
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2d
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Sr IT Systems Administrator
Long Beach, California, United States
$63k-$74k/yr OnsiteFull Time
Cognizant
CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.
7+ YOEBachelor's degree in IT, computer science, engineering, or related field; 7+ years in systems administration or infrastructure support. Advanced Windows, Microsoft 365, virtualization, networking, and troubleshooting expertise required.
Windows Server, Active Directory, Group Policy, DNS, DHCP, Microsoft 365, Exchange Online, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, Intune, SCCM, VMware, Hyper-V, TCP/IP, ServiceNow, ITSM, CAB
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2d
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Sr IT Systems Administrator
Long Beach, California, United States
$63k-$74k/yr OnsiteFull Time
Cognizant
CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.
7+ YOEBachelor's degree in IT, computer science, engineering, or related field; 7+ years of systems administration or infrastructure support experience. Preferred Azure, Microsoft 365, ITIL, VMware, Server+, or Network+ certifications.
Windows Server, Active Directory, Group Policy, DNS, DHCP, Microsoft 365, Exchange Online, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, Intune, SCCM, VMware, Hyper-V, ServiceNow, ITSM
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2d
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Sr IT Systems Administrator
Long Beach, California, United States
$63k-$74k/yr HybridFull Time
Cognizant
CognizantNASDAQ: CTSH: Global professional services providing technology and consulting services.
7+ YOEBachelor's degree in a related field and 7+ years of systems administration or infrastructure support experience. Requires Windows Server, Active Directory, Microsoft 365, networking, virtualization, monitoring, ITIL, and advanced troubleshooting skills.
Windows Server, Active Directory, Group Policy, DNS, DHCP, Microsoft 365, Exchange Online, Teams, Microsoft SharePoint, OneDrive, Intune, SCCM, TCP/IP, VMware, Hyper-V, ServiceNow, ITSM
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3mo
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Network Infrastructure Engineer (23587)
Rancho Cucamonga, California, United States
$118k-$170k/yr HybridFull Time
Sumitomo Rubber North America
Sumitomo Rubber North AmericaTokyo Stock Exchange: 5110: Manufactures and distributes high-performance tires for cars and motorcycles.
6+ YOE5-7 years in network administration/engineering; BS in CS/IT or related field or equivalent experience; TCP/IP, routing, switching, VLANs; routers/switches/firewalls; VPNs and ACLs; Python for automation; AWS/Azure; Linux; occasional overnight travel.
Palo Alto firewalls, VPN, Cisco Meraki, Cisco switching, AWS, Azure, Linux, Python
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2d
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IT ENTERPRISE SYSTEM ADMINISTRATOR III
San Diego or La Jolla
$97k-$122k/yr OnsiteFull Time
Scripps Research
Scripps Research: Conducts biomedical research and develops novel drug therapies.
6+ YOEBachelor’s degree or equivalent and 6+ years of system administration experience in hybrid Windows and Unix environments. Requires cloud, directory, storage, backup, virtualization, scripting, and infrastructure-as-code expertise.
Microsoft 365, Active Directory, Entra ID, Azure, AWS, Windows Server, Linux Server, Microsoft Windows Server, NetApp, Cisco UCS, VMware VCF, PowerShell, csh, sh, tcsh, ksh, DNS, SAN, NAS, Exchange Server
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1mo
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IT Services Administrator
Brea, California, United States
$71k-$80k/yr OnsiteFull Time
T&T Supermarket
T&T Supermarket: Canada's largest Asian supermarket chain.
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
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1w
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Information Technology Administrator
Claremont, California, United States
$93k-$112k/yr OnsiteFull Time
City of Claremont
City of Claremont: Provides municipal services and public safety to Claremont residents.
5+ YOEFive years of progressive IT support experience or equivalent, a bachelor's degree in computer science or information systems, and a valid California driver's license. Network, systems, database, and enterprise infrastructure expertise required.
Microsoft Windows Server, Active Directory, Microsoft 365, Microsoft Entra ID, Microsoft Azure, VMware vSphere, VMware vCenter, Hyper-V, Fortinet, FortiGate, FortiSwitch, FortiAP, FortiManager, FortiAnalyzer, FortiAuthenticator, DNS, DHCP, VPN, VLANs, Exchange Online, MFA, Conditional Access, CAD/RMS, CJIS, CLETS
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2w
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Operational Technology Administrator
Rancho Cucamonga, California, United States
OnsiteFull Time
Reyes Holdings
Reyes Holdings: Global distributor of food and beverage products.
1+ YOEBachelor’s degree with 1–2 years of OT systems experience, or high school diploma/GED with 3–5+ years. Requires industrial OT, network infrastructure, OT security, patch management, and incident response experience.
Operational Technology (OT), laser-guided vehicles, Human-Machine Interface (HMI), historians, servers, remote access, network devices, Industrial Control Systems (ICS), switches, routers, gateways, firewalls
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