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164 security administrator jobs at 104 companies in Orange, CA

2mo
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System Security Administrator
Los Angeles, California, United States
HybridFull Time
Material
Material: Specialized inference cloud platform for high-performance AI workloads.
5+ YOEBS in CS/EE or related field; 5+ years systems engineering with cybersecurity; Microsoft administration; threat/endpoint monitoring; network security; MDM; PowerShell; relevant IT/cybersecurity certifications.
Microsoft Exchange, Entra ID, Purview, DLP, CrowdStrike, Darktrace, Fortinet, JAMF, PowerShell, Command-line
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IT Security Administrator
El Monte, California, United States
$71k-$81k/yr OnsiteFull Time
Mutual Trading
Mutual TradingTokyo Stock Exchange: 2531: Importer and distributor of Japanese food and restaurant supplies
1+ YOEManage and monitor security operations, respond to incidents, maintain tools, and enforce security policies.
Microsoft Defender, Microsoft 365 Security & Compliance, Microsoft Intune, MDM/MAM, Windows, macOS, Linux, SIEM, IDS/IPS, Firewalls, Endpoint protection
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1mo
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Information Security Administrator
Chino, California, United States
$129k-$157k/yr OnsiteFull Time
Inland Empire Utilities Agency
Inland Empire Utilities Agency: Provides regional wastewater treatment and wholesale water distribution services.
5+ YOEFive years of information security governance and operations; knowledge of network monitoring, vulnerability management; experience with OT/ICS security is desirable; must hold valid California driver’s license and one security certification.
Firewalls, Endpoint protection, SIEM, VPNs, Microsoft 365, Azure, Windows servers, Linux servers, Active Directory
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3w
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Network Security Administrator
Tustin, California, United States
$150k-$180k/yr OnsiteFull Time
Design West Technologies
Design West Technologies: Designs and manufactures aerospace and defense electro-mechanical systems.
5+ YOE5–8 years in network/systems/cybersecurity; hands-on Palo Alto (NGFW, Prisma Access, Cortex XDR); Microsoft Windows Server, Linux, Microsoft Azure, Microsoft Entra ID; CMMC Level 2/NIST SP 800-171 knowledge; active or obtainable Secret clearance.
Palo Alto Networks, NGFW, Prisma Access, Cortex XDR, Microsoft Windows Server 2016\u00092022, Linux, Microsoft Azure, Microsoft Entra ID, Microsoft Active Directory, PowerShell, Bash
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Windows Systems Administrator II – Azure (Security Clearance)
Torrance, California, United States
$127k-$159k/yr OnsiteFull Time
Honeywell International
Honeywell InternationalNASDAQ: HON: Designs and manufactures technologies for aerospace, buildings, and industry.
3+ YOEAssociate's in IT/CS, 3+ years system administration, 2+ years cloud (Azure) administration, Secret security clearance, DoD 8140 IAT Level 2 certification, proficiency securing Windows and Cloud environments.
ACAS, STIGs, Splunk, SCC, VMware, Windows 10, Windows 11, Windows Server 2016, Windows Server 2022, Microsoft Azure, Defense Counterintelligence and Security Agency Assessment and Authorization Guide (DAAG), NIST SP 800-53, Risk Management Framework (RMF)
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Senior IT Network and Security Administrator Engineer
Placentia, California, United States
$100k-$135k/yr OnsiteFull Time
Arlon Graphics
Arlon Graphics: Manufactures pressure-sensitive vinyl films for signage and vehicle graphics.
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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Security Officer Lobby Administrator
Santa Monica, California, United States
$18/hr OnsiteFull Time
Allied Universal
Allied Universal: Global provider of physical security and facility management services.
High school diploma or equivalent, 18+ for unarmed (21+ for armed), background check and drug screen required, state/local licensing may be required, customer-service and security experience preferred.
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1w
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Network Administrator
La Mirada, California, United States
$63k-$93k/yr OnsiteFull Time
Solid State Devices, Inc.
Solid State Devices, Inc.: Manufacturer of high-reliability power semiconductors for aerospace and defense.
4+ YOEMinimum 4 years network administration experience, associate/bachelor's in IT or equivalent, relevant certifications preferred (CompTIA Network+, CCNA/CCNP, Microsoft Azure Administrator, JNCIA). Strong troubleshooting, security, and communication skills.
Cisco routers, Cisco switches, firewalls, wireless access points, Windows Server, Linux/Unix, SolarWinds, Wireshark, Nagios, Active Directory, VMware, TCP/IP, DNS, DHCP, SNMP, FTP
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2d
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Systems Administrator
Glendale, California, United States
$105k-$145k/yr OnsiteFull Time
Brio Water Technology
Brio Water Technology: A market-leading water products brand offering home hydration solutions that combine technology and design to improve everyday hydration.
4+ YOE4+ years systems administration experience, Microsoft 365/Google Workspace/Entra ID/Active Directory administration, endpoint and security tooling, networking fundamentals, PowerShell, Azure Site Recovery or comparable recovery experience.
Microsoft 365, Google Workspace, Microsoft Entra ID, Microsoft Active Directory, Microsoft Exchange Online, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, PowerShell, Azure Site Recovery, Azure, AWS, CrowdStrike, Datadog, NinjaOne, PDQ, EDR
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4w
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Network Administrator
Los Angeles, California, United States
OnsiteFull Time
Cosm
Cosm: Operates immersive entertainment venues and develops shared reality technology.
6+ YOE6+ years IT experience, 4+ years network administration, CCNA required; strong hands-on Palo Alto/Arista/Cisco experience, familiarity with BGP, Python/Ansible, cloud networking (AWS), and network security.
Arista, Palo Alto, Panorama, PAN-OS, CloudVision, Cisco, Python, Ansible, Pulumi, AWS, Ruckus, Dell, BGP, CI/CD
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Security Officer
Ontario, California, United States
OnsiteFull Time
Weiser Security Services
Weiser Security Services: Security services provider that protects assets and people.
Experience in security operations preferred; ability to stand for long hours; willingness to work extended hours; patrols and reporting as required.
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Security Guard
Dartmouth, Nova Scotia, Canada
OnsiteContract, Full Time
AFIMAC
AFIMAC: Provides specialized security, risk management, and crisis response services.
Experience as security guard; ability to travel within Nova Scotia; 84-hour weeks; English proficiency; Canadian resident; de-escalation; report writing.
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3d
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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
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1w
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Senior IT Administrator
El Segundo, California, United States
$99k-$117k/yr OnsiteFull Time
CesiumAstro
CesiumAstro: Develops phased array communication systems for satellites and aircraft.
5+ YOE5+ years IT support/systems administration, strong AD/Azure AD/Entra ID, M365 and Intune skills, AWS experience, IT security knowledge, advanced troubleshooting, and strong communication.
Active Directory, Azure AD/Entra ID, Microsoft Outlook, Microsoft Teams, Microsoft SharePoint, Microsoft OneDrive, Microsoft Purview, Intune, AWS, VPN
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2d
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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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IT System Administrator
Los Angeles or El Segundo or Hawthorne
$80k-$100k/yr OnsiteFull Time
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
1+ YOE1+ years system administration experience with on-prem infrastructure, Windows/Linux administration, Active Directory/Azure AD, endpoint management (Intune,GPO), networking, AV support, lifting ability, and security-first mindset.
Kubernetes (k8s), Ansible, PowerShell DSC, AWS, Azure, GCP, Grafana, Prometheus, Python, Bash, PowerShell, Siemens Teamcenter, MATLAB, Visual Studio, Active Directory, Azure AD / Entra ID, Microsoft Intune, Group Policy (GPOs), SAN
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Site Security Manager, USARC DEERS/RAPIDS
Hoover or Pago Pago or Los Alamitos or Los Angeles or Mountain View or Aurora or Orlando or Fort Gillem or Fort Shafter or Darien or Arlington Heights or Forest Park or Fort Knox or Devens or Livonia or Saipan or Vicksburg or Charlotte or Fort Bragg or Londonderry or Fort Totten or Rochester or Williamsport or Johnstown or Moon Township or Fort Buchanan or Greenville or Grand Prairie or Houston or Salt Lake City or Abingdon or Marysville or Vancouver
OnsiteFull Time
Yorktown Systems Group
Yorktown Systems Group: Provides professional services and training to government agencies.
1+ YOEHigh school diploma and 1 year customer service experience; proficient in MS Office; RAPIDS certification required; administrative and security duties.
Microsoft Word, Outlook, RAPIDS, scanners, copiers, keyboard, mouse
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2w
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Information Systems Administrator
Hawthorne, California, United States
OnsiteFull Time
Quantum Space
Quantum Space: Developing maneuverable spacecraft platforms for defense and commercial missions.
4+ YOE4+ years in system administration/DevOps/cloud/network support; experience with Linux/macOS/Windows, scripting (BASH/Shell/YAML), IaC (Terraform/Ansible/Puppet), Azure/AWS, IdP/SAML, cybersecurity (CompTIA Security+), and ability to obtain/maintain security clearance.
Linux, macOS, Windows, BASH, Shell, YAML, Terraform, Ansible, Puppet, Microsoft Azure, Amazon Web Services, IdP, SAML
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Senior Systems Administrator
Torrance, California, United States
$110k-$137k/yr OnsiteFull Time
Red Cat Holdings
Red Cat HoldingsNASDAQ: RCAT: Providing all-domain drone and robotic solutions for defense.
7+ YOE7+ years systems administration experience, 3+ years in senior/lead capacity. Strong Windows, Linux, Microsoft 365, Azure/AWS, identity, endpoint, backup, monitoring, Jira/Confluence, scripting (PowerShell/Python/Bash), security and incident response. US work authorization required for ITAR/EAR roles.
Microsoft 365, Microsoft GCC High, Windows, Linux, macOS, Entra ID, Active Directory, DNS, DHCP, Group Policy, Azure, AWS, PowerShell, Jira, Jira Service Management, Confluence, Smartsheet, Adobe Acrobat, SolidWorks PDM, GitLab, GitHub, Jenkins Build Server, Microsoft Intune, Microsoft Autopilot, Microsoft Defender, Microsoft Purview, Exchange Online Protection, VMware, Python, Bash
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Sr. Principal Systems Administrator
El Segundo or United States
$118k-$225k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
8+ YOEU.S. citizen with active Secret DoD clearance, typically 8+ years' systems administration experience (or Advanced Degree +5 years). Experience with Red Hat Enterprise Linux, Microsoft Windows/AD, VMware, storage, backups, and security; CompTIA Security+ CE (DoDD 8140/8570) required within 6 months.
Red Hat Enterprise Linux, Active Directory, DNS, DHCP, VMware, VMware vCenter, vSphere, ESX, Splunk, Linux, Windows 10, Windows 11, Microsoft WSUS, Microsoft SCCM, Microsoft Exchange, NAS, SAN
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