286 system administrator jobs at 193 companies in Fallbrook, CA

6d
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System Administrator
Oceanside, California, United States
$110k-$130k/yr OnsiteFull Time
MagnaFlow
MagnaFlow: Designs and manufactures automotive performance exhaust and suspension systems.
3+ YOE3+ years IT help desk/systems administration experience; B.S. in IT or equivalent experience; proficiency with Microsoft AD/O365, VMWare, Windows Server, Mac OS X, backup/recovery and security frameworks.
Microsoft Office 365, Microsoft Active Directory, VMWare, Windows Server, Mac OS X, Network Attached Storage (NAS), NIST Cybersecurity Framework (NIST CSF)
1w
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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
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
2w
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System Administrator - Cloud and SaaS
San Diego, California, United States
$80k-$95k/yr HybridFull Time
Mutual of Omaha Mortgage
Mutual of Omaha Mortgage: Provides residential mortgage lending and refinancing services to homeowners.
3+ YOE3+ years systems administration experience with Microsoft 365, Entra ID/Azure, Intune, and SaaS SSO (SAML/OIDC); PowerShell scripting; strong identity and security knowledge.
Microsoft 365, Exchange Online, SharePoint Online, Teams, OneDrive, Microsoft Entra ID (Azure AD), Microsoft Intune, Microsoft Defender, Azure, Azure Virtual Desktop, Log Analytics, Key Vault, PowerShell, SCIM, SAML, OIDC
4d
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Linux System Administrator
San Diego, California, United States
$140k-$155k/yr OnsiteFull Time
Bridge Defense
Bridge Defense: Provides secure infrastructure and edge computing for national security.
Active Secret clearance, DoD 8570/8140 IAT II or IAM II (e.g., Security+ CE), CSWF certification, bachelor's degree or equivalent, RHEL 7/8 Linux administration, cybersecurity and compliance experience.
Red Hat Enterprise Linux (RHEL), PHP, PKI, STIGs, RMF
1mo
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Senior Principal System Administrator
San Diego, California, United States
$133k-$226k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
8+ YOETop Secret clearance required, typically Bachelor's + 8 years or equivalent. Strong Linux (RHEL), Windows Server, VMware, networking, cybersecurity (DISA STIGs, Nessus) skills; CompTIA Security+; McAfee ePO admin certification within 6 months; experience with classified networks.
VMware, Red Hat Enterprise Linux, YUM, DNF, Windows Server, Microsoft SQL Server, TMPC, McAfee ePO, DNS, LDAP, SSH, SCP, Nessus, PKI, Red Hat KVM, Bash, PowerShell, Shared Storage, Microsoft Word, Microsoft PowerPoint, Microsoft Excel, DISA STIGs
3w
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System Administrator (Classified Systems) – Active Secret Clearance Required
Carlsbad, California, United States
$121k-$191k/yr OnsiteFull Time
Viasat
ViasatNASDAQ: VSAT: Provider of global satellite-based connectivity and secure communication solutions.
6+ YOE6+ years administering Windows and Linux systems in classified environments; DoD RMF experience, SIPRNet administration, virtualization, networking, and DoD 8140.01 certification; active Secret clearance required.
Windows Server, Win 10, Win 11, Linux, Active Directory, TCP/IP, DNS, DHCP, VMware, Hyper-V, OpenShift, ACAS, SCAP, HBSS, Certificate Management, Radius, 802.1x, SIPRNet, Juniper, Palo Alto, Cisco, NetApp, Veeam, Splunk, Nessus, Microsoft Exchange Server
2w
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Senior Associate, ServiceNow - Certified System Administrator
Irvine or Los Angeles or San Francisco or Denver or Washington or Tampa or Atlanta or Chicago or Boston or St Louis or Short Hills or New York City or Philadelphia or Austin or Dallas or Houston or Seattle
$94k-$203k/yr OnsiteFull Time
KPMG
KPMG: Global professional services network providing audit, tax, and advisory.
3+ YOE3+ years managing enterprise systems with ServiceNow focusing on ITSM/ITOM/IRM, ServiceNow CSA required, JavaScript customization skills, agile delivery and team leadership experience.
ServiceNow, JavaScript
3w
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WMS (Warehouse Management System) Administrator
Perris, California, United States
$70k-$90k/yr OnsiteFull Time
American Exchange Group
American Exchange Group: Designs and distributes fashion accessories, footwear, and beauty products.
3+ YOE3+ years WMS administration or related IT/logistics experience; experience with Deposco or Manhattan Associates WMS preferred; SQL, data management, system integration skills; communication and problem-solving; bachelor’s degree preferred.
Deposco, Manhattan Associates WMS, SQL
3w
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Systems Administrator
San Diego, California, United States
$75k-$100k/yr HybridFull Time
Trulioo
Trulioo: Provides identity and business verification for global regulatory compliance.
2+ YOEBachelor's degree or equivalent,2+ years IT support/systems administration,endpoint provisioning,Google Workspace/Azure/OneLogin administration,Jamf/Intune experience,strong communication and multitasking skills.
Google Workspace, Microsoft Azure/Entra ID, AWS, Jamf, Intune, CrowdStrike, OneLogin, Okta, Meraki, Mimecast, Jira, Slack, Asset Panda, PowerShell, Bash
1mo
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Systems Administrator
San Diego, California, United States
$91k-$110k/yr HybridFull Time
San Diego Housing Commission
San Diego Housing Commission: Providing affordable housing and rental assistance in San Diego.
3+ YOEBachelor's in CS or related and 3 years IT/systems administration experience; knowledge of Microsoft/Azure, VMware, networking (Cisco/Juniper/Meraki), storage and backup (Veeam, SAN), security tools; valid CA driver’s license.
Microsoft Azure Active Directory/Entra ID, Microsoft 365, Microsoft Exchange Online, Microsoft Intune, Microsoft Windows, VMware vSphere, Microsoft Azure Virtualization, Cisco, Juniper, Meraki, SIEM, MFA, Veeam, SAN, RAID, SSD, VoIP, macOS
3w
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Senior Systems Administrator
San Diego, California, United States
$110k-$130k/yr OnsiteFull Time
Applications International Corporation
Applications International Corporation: Delivers cloud-based environmental health, safety, and ESG compliance software.
5+ YOE5+ years systems administration experience, hands-on Azure and Windows Server administration, PowerShell and IaC (Terraform/Ansible) automation, disaster recovery and identity management, strong troubleshooting and communication skills.
Azure, PowerShell, Terraform, Ansible, VMware vSphere, vCenter, Hyper-V, Active Directory, Azure AD, Entra ID, Group Policy, Azure Monitor, Datadog, PRTG, NetApp, Dell EMC, Pure Storage
2mo
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Sr. System Engineer
Costa Mesa or Redondo Beach
OnsiteFull Time
T2 Group
T2 Group: Provides IT consulting and workforce solutions for healthcare organizations.
5+ YOE5+ years systems/endpoint/cloud/desktop engineering experience; hands-on administration of Microsoft 365, Entra ID, Intune, Okta, AWS; strong troubleshooting, documentation, and communication skills; must work onsite in Costa Mesa.
Microsoft 365, Entra ID, Intune, Okta, AWS, Windows 10, Windows 11
1mo
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System Engineer- ArcGIS
Redlands or St. Louis or Vienna
$121k-$198k/yr OnsiteFull Time
Esri
Esri: Developing software for digital mapping and spatial data analysis.
8+ YOE8+ years experience deploying and administrating enterprise ArcGIS or comparable systems; Windows/Linux sysadmin; scripting (Python, PowerShell, JavaScript, C#); RDBMS and SQL; Top Secret/SCI clearance and US citizenship; Bachelor\u0002s in STEM.
ArcGIS, ArcGIS Enterprise, ArcGIS Desktop, ArcGIS Online, Portal for ArcGIS, ArcGIS Runtime, RDBMS, SQL, SQL Server, Oracle, PostgreSQL, Python, PowerShell, Javascript, C#, Windows, Linux
2mo
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IT Systems Administrator
Seal Beach, California, United States
$86k-$150k/yr OnsiteFull Time
AstroForge
AstroForge: Mines and refines valuable minerals from near-Earth asteroids.
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+
1w
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Symitar Administrator
Costa Mesa, California, United States
$116k-$170k/yr OnsiteFull Time
Financial Partners Credit Union
Financial Partners Credit Union: Provides consumer banking and financial services to members.
Bachelor's degree and experience administering Symitar; strong SQL, IBM AIX, and Synergy experience; system administration, incident resolution, and technical documentation skills.
Symitar, SQL, IBM AIX, Synergy
1w
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Senior Systems Administrator
Anaheim, California, United States
$85k-$105k/yr OnsiteFull Time
Quantum Electronic Payments
Quantum Electronic Payments: Provides payment processing solutions and merchant services for businesses.
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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Atlassian Administrator
San Diego or Colorado or Huntsville or Tupelo
$72k-$110k/yr HybridFull Time
General Atomics
General Atomics: Designs and manufactures unmanned aircraft and nuclear technology systems.
4+ YOE4+ years Atlassian administration experience, 3+ years systems administration; strong Linux/Windows/Unix and enterprise Atlassian (JIRA, Confluence, Bitbucket, Bamboo, Fisheye/Crucible) skills; Agile/Scrum experience; HA/DR and automation experience; US citizenship required.
Atlassian, JIRA, Confluence, Bitbucket, Bamboo, Fisheye, Crucible, Microsoft 365, Microsoft Teams, Microsoft OneDrive, Microsoft Forms, Microsoft Planner, Microsoft SharePoint, Linux, Windows, Unix, TCP/IP, VMs, Agile, Scrum
2mo
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Senior Systems Administrator
Costa Mesa, California, United States
$146k-$194k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
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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Branch Office Administrator - San Juan Capistrano, CA
San Juan Capistrano, California, United States
OnsiteFull Time
Edward Jones
Edward Jones: Offers investment management and financial planning through local branches.
Provide client service, account administration, and office support; strong analytical, attention to detail, digital tool use, and conversational skills; willingness to learn financial services systems.
MoneyGuide, Salesforce, Microsoft Office