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542 system administrator jobs at 363 companies in Buena Park, CA

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System Administrator
Altadena, California, United States
$40-$60/hr OnsiteFull Time
First City Credit Union
First City Credit Union: Member-owned, not-for-profit California credit union serving Los Angeles County employees, families, and community members.
4+ YOEBachelor's degree or equivalent experience and 4–5 years of system administration experience in financial services, a credit union, or another regulated environment. Relevant system and network certifications preferred.
Microsoft, VMware, CompTIA, CCNA, CCNP, CCSP
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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
$105k-$115k/yr OnsiteFull Time
Trace3
Trace3: Private IT consulting provider serving enterprise and commercial organizations with AI, cloud, data, and cybersecurity services.
3+ YOEBachelor's degree or equivalent experience; 3–5 years of system administration experience; Windows/Linux, enterprise infrastructure, cybersecurity, cloud, automation, and compliance experience; Secret clearance eligibility; DoD 8570 IAT Level II certification.
Windows, Linux, Active Directory, DNS, DHCP, Group Policy, VMware vSphere, ESXi, Hyper-V, Azure, AWS, GCC High, PowerShell, Bash, Python, Ansible, SCCM/MECM, Chef, Puppet, STIG, SCC, IAVA, NIST 800-53, FedRAMP, CMMC, RMF
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9h
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Cloud System Administrator
Los Angeles, California, United States
HybridFull Time
Salt Productions
Salt Productions: Salt Productions is a private experiential production agency creating in-person brand experiences and events for clients worldwide.
1+ YOEIT systems administration experience, cloud infrastructure support, networking fundamentals, shell and Python scripting, professional Mac, Windows, or Linux administration, and Google Cloud Platform familiarity.
Google Cloud Platform (GCP), Compute Engine, IAM, Cloud Storage, VPC, Cloud Monitoring, Ansible, Terraform, Grafana, Python, Mac, Windows, Linux, TCP/IP, DNS, VPN, firewalls, routing, SaaS
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1mo
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IT System Administrator
Los Angeles or El Segundo or Hawthorne
$80k-$100k/yr OnsiteFull Time
Freeform
Freeform: AI-native metal 3D-printing manufacturer serving aerospace, defense, energy, semiconductor, automotive, and other industrial customers.
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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Volunteer Management System Administrator
Rancho Palos Verdes, California, United States
$29-$30/hr OnsitePart Time
The Salvation Army Western Territory
The Salvation Army Western Territory: Christian nonprofit social-services organization serving people in need across 13 western U.S. states and Pacific territories.
2+ YOEHigh school diploma required; associate or bachelor's degree preferred. Requires 2+ years of administrative, operations, customer support, or systems support experience and Microsoft Office proficiency.
Golden, Microsoft Office, Microsoft Word, Microsoft Excel, Microsoft Outlook, Information Technology (IT)
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2mo
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System Administrator - Level 4
Pasadena, California, United States
$107k-$160k/yr OnsiteFull Time
Sophia Space
Sophia Space: Private orbital computing building AI systems and in-space data centers for defense, government, and commercial customers.
5+ YOE5+ years systems administration experience supporting mixed macOS/Windows/Linux environments; strong identity/access, MDM, networking, troubleshooting, documentation, and automation skills (Python/Bash/PowerShell).
Apple Business Manager, Google Workspace, Microsoft Entra ID, Intune, Python, Bash, PowerShell, MDM, SSO, SAML, SCIM, MFA, RBAC, VPNs, VLANs, Wi-Fi, Linux, NIST 800-171, CMMC
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2w
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System Administrator
El Segundo, California, United States
$76k-$144k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
2+ YOEUniversity degree or equivalent experience plus 2 years relevant experience, Windows or Linux experience, active Secret clearance, and U.S. citizenship. Must obtain CompTIA Security+ CE or equivalent within 6 months.
Microsoft Windows, Red Hat Enterprise Linux, ESXi, vCenter, Microsoft Active Directory, DNS, DHCP, Ansible, RAID
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2mo
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System Administrator
Glendale, California, United States
$103k-$130k/yr OnsiteFull Time
Front Porch Communities and Services
Front Porch Communities and Services: Nonprofit organization dedicated to human-centered senior living.
2+ YOEMaintain and secure servers, networks, backups and monitoring; provide onsite and remote Tier I/II support, on-call coverage, and perform maintenance and disaster recovery tasks.
VMware, Windows Server, Linux, HPE, Pure, Veeam, Veeam Backup and Replication, Backup Exec, VMware Horizon, Citrix, Citrix NetScaler, Azure Windows Virtual Desktop, Active Directory, Exchange, Exchange Online, Group Policy, DNS, DFS, DHCP, SQL, PKI, SharePoint, SCCM, Azure, Skype for Business, Teams, ADFS, M365, Nagios, ManageEngine, Microsoft monitoring solutions, Cisco AnyConnect, iLO, TeamViewer, Remote Desktop, VNC, SSH, telnet, FTP, SDWAN
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Senior System Administrator
Playa Vista, California, United States
$97k-$154k/yr OnsiteFull Time
Inversion Space
Inversion Space: Privately held aerospace building autonomous reentry vehicles for defense, logistics, and rapid cargo delivery from orbit.
5+ YOERequires 5+ years’ comparable experience, secure or defense environment experience, cloud, virtualization, networking, Windows/Linux administration, troubleshooting, and ability to obtain a U.S. government Secret/Top Secret clearance.
AWS, Microsoft Azure, Google Cloud Platform (GCP), Windows, Linux, Red Hat Enterprise Linux (RHEL), Docker, Kubernetes, PowerShell, Bash, Ansible, Terraform, AWS DevOps, AWS Solutions Architect, Google Professional Cloud Architect, Azure DevOps, Azure Solutions Architect
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2mo
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System Administrator, IT Services
Calabasas, California, United States
$90k-$100k/yr OnsiteFull Time
AmaWaterways
AmaWaterways: Luxury river cruise line serving travelers with immersive, family-run journeys across Europe, Asia, Africa and South America.
3+ YOE3–5 years system administration experience; Associate's or Bachelor's in IT/CS/IS or equivalent; hands-on with VMware, Citrix, Microsoft 365/Entra, Azure/AWS, 8x8, Cisco, Intune, PowerShell, ITSM and backup/patch management; participates in on-call rotation.
VMware vSphere, ESXi, vCenter, Citrix Cloud, Citrix DaaS, Citrix Virtual Apps and Desktops, Microsoft 365, Microsoft Exchange Online, Microsoft Teams, Microsoft SharePoint Online, OneDrive, Active Directory, Microsoft Entra ID, Microsoft Azure, AWS, 8x8, Cisco, Windows Server, Linux, Microsoft Intune, Windows 10, Windows 11, macOS, ServiceNow, Jira Service Management, Freshservice, PowerShell, Microsoft Office, Veeam, Microsoft Teams Rooms
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3mo
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System Security Administrator
Los Angeles, California, United States
HybridFull Time
Material Group
Material Group: Material Group is an Austin-based specialized talent practice recruiting technical workers for companies building artificial general intelligence.
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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3mo
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Senior Network System Administrator`
Agoura Hills, California, United States
$98k-$115k/yr HybridFull Time
Joni and Friends
Joni and Friends: Christian nonprofit disability ministry serving people with disabilities through practical care, Gospel outreach, and church training.
5+ YOESenior IT role requiring 5+ years in network/system administration, Azure AD/Entra, Fortinet, Intune, 3+ IT certifications.
Microsoft Entra ID (Azure AD), Fortinet FortiGate/EMS/FortiClient, Microsoft Intune, Microsoft 365, PowerShell, APIs, Azure, SAML, SSO, SSL
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3mo
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IT System Administrator
Commerce, California, United States
$55k-$59k/yr OnsiteFull Time
Wesley Health Centers
Wesley Health Centers: Nonprofit federally qualified health center serving underserved Los Angeles County residents with healthcare and supportive services.
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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1w
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Site IT System Administrator
Chino, California, United States
$80k-$105k/yr HybridFull Time
Luna Innovations
Luna InnovationsOTC Expert Market: LUNA: Fiber-optic technology providing sensing, test, measurement, monitoring, and control systems for industrial customers.
3+ YOERequires 3+ years in IT support or systems administration, Windows, Active Directory, networking, Windows Server, virtualization, asset and vendor management, and an associate-level IT education or equivalent experience.
Active Directory, Microsoft Entra ID, Windows Server, Microsoft 365, Microsoft Azure, VMware, Hyper-V, Microsoft Office, DNS, DHCP, VPN, Intune, SonicWall, CompTIA A+, CompTIA Network+, CompTIA Security+
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2mo
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Senior System Administrator - Information Technology
Gardena, California, United States
$83k-$123k/yr OnsiteFull Time
Memorial Hospital of Gardena
Memorial Hospital of Gardena: Private 172-bed acute care hospital serving Gardena and surrounding Los Angeles County communities.
7+ YOE7+ years IT systems experience and 5+ years healthcare experience. Strong background in routing, switching, firewall infrastructure, SD-WAN, hybrid cloud, virtualization, centralized storage, LAN administration, datacenter integration, security, and HIPAA compliance. Leadership/mentoring experience.
SD-WAN, hybrid cloud, AIDET
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2mo
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Senior IT System Administrator
Long Beach, California, United States
$107k-$152k/yr OnsiteFull Time
Vast
Vast: Developing commercial space stations for permanent human presence.
4+ YOE4+ years enterprise IT systems administration; expertise with Windows Server, Active Directory, Group Policy, endpoint management (JAMF/Intune/SCCM), patch management, scripting (PowerShell/Python/Bash), virtualization, and networking fundamentals.
Windows Server, Active Directory Domain Services, Group Policy, Configuration Manager (SCCM), JAMF, Linux, VMware, Hyper-V, PowerShell, Python, Bash, WSUS, Ivanti, Automox, NIST 800-53, CIS benchmarks, CMMC
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1mo
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System Administrator
Los Angeles, California, United States
$60-$70/hr HybridContract
Cosm
Cosm: Immersive entertainment, media, and technology operating shared-reality venues for sports, entertainment, art, and education.
5+ YOE5+ years infrastructure/system administration experience (media/VFX preferred). Expert Windows/Mac/Linux administration, system imaging, scripting (PowerShell/Bash/Python), render farm and storage management, AWS and monitoring tools.
Windows, Mac, Linux, WDS, WSUS, SCCM, ECM, PDQ Deploy, PowerShell, Bash, Python, HP Anyware, Parsec, Splashtop, Jump Desktop, Nuke, Resolve, Cinema 4D, Houdini, Thinkbox Deadline, AWS Deadline Cloud, RenderMan, LogicMonitor, Grafana, S3, EC2, VPC, Intune, Apple Business, JAMF Pro, Cisco Prime, Arista CloudVision, Aruba Central, Ruckus SmartZone
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System Administrator - Level II (Database Skills)
Camp Pendleton, California, United States
OnsiteFull Time
3 Reasons Consulting
3 Reasons Consulting: Woman- and service-disabled veteran-owned cybersecurity and Health IT consulting firm serving healthcare organizations and government agencies.
4+ YOE4+ years in systems administration, patch management, and backup operations in Microsoft environments; DoD or government experience, IAT Level II certification, active Secret clearance, and Tier 1 investigation eligibility required.
Microsoft 365, Adobe, Java, Microsoft Endpoint Configuration Manager (MECM), Microsoft Operating Systems, Group Policy Objects (GPOs), FIPS, ITIL, STIG
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2mo
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Senior System Administrator - Information Technology
Gardena, California, United States
$83k-$123k/yr OnsiteFull Time
Memorial Hospital of Gardena
Memorial Hospital of Gardena: Private 172-bed acute care hospital serving Gardena and surrounding Los Angeles County communities.
7+ YOE7+ years IT systems experience (routing, switching, firewall) and 5+ years healthcare experience; expertise in multi-platform systems, virtual environments, centralized storage, LAN, SD-WAN, datacenter integration, network security, and regulatory compliance.
SD-WAN
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2mo
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Senior System Administrator - Information Technology
Gardena, California, United States
$83k-$123k/yr OnsiteFull Time
Memorial Hospital of Gardena
Memorial Hospital of Gardena: Private 172-bed acute care hospital serving Gardena and surrounding Los Angeles County communities.
7+ YOESeven+ years IT systems experience (routing, switching, firewall); five+ years healthcare experience; strong knowledge of multi-platform systems, virtual environments, centralized storage, LAN, SD-WAN, datacenter integration, and network security; HIPAA/regulatory familiarity.
SD-WAN, AIDET
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