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215 junior systems administrator jobs at 154 companies in Diamond Bar, CA

2d
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Systems Administrator
Northridge, California, United States
$6k-$7k/mo OnsiteFull Time
California State University, Northridge
California State University, Northridge: Public university serving students through undergraduate and graduate education and research in Los Angeles’ San Fernando Valley.
2+ YOEBachelor's degree in a related field and two years of relevant experience, or equivalent experience substituted year for year. Requires systems administration, troubleshooting, communication, and analytical skills.
Extron, Microsoft Windows, Microsoft Excel
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2mo
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Systems Administrator
Los Angeles, California, United States
$85k-$120k/yr OnsiteFull Time
Antares Nuclear
Antares Nuclear: Factory-produced, deployable fission microreactors to provide strategic energy for mission-critical systems across Earth, space, and underseas.
2+ YOE2+ years IT support/systems administration experience; Microsoft 365/Entra ID/Intune knowledge; endpoint, networking, and cloud (Azure/AWS) familiarity; PowerShell and troubleshooting skills; compliance/audit documentation experience.
Microsoft 365, Microsoft Entra ID, Microsoft Intune, Microsoft Defender, Microsoft Exchange, Microsoft Teams, Microsoft SharePoint, Windows, macOS, Linux, PowerShell, Microsoft Azure, AWS, GCC High, Ubiquiti, UniFi, Zoom, PSA, RMM, VPN, LAN, WAN, WiFi, TCP/IP, DNS, DHCP, VLAN, NAC
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2w
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Systems Administrator - Surveillance
Highland, California, United States
OnsiteFull Time
San Manuel Band of Mission Indians
San Manuel Band of Mission Indians: Federally recognized tribal government operating gaming and hospitality enterprises.
2+ YOEBachelor's degree in computer science, information technology, or related field; 2+ years of relevant technical experience; systems administration expertise; valid driver's license; English proficiency; required fiber optic and Genetec certifications.
Microsoft Windows Server, VMware, vSphere, vCenter, SQL Server, Active Directory, SAN, NAS, DAS, Fiber Channel (FC), iSCSI, Palo Alto, Pure Storage, Dell Isilon, Cisco, ESXi, Extreme switching, SolarWinds, Dynatrace, Genetec, Microsoft Certified Systems Engineer (MCSE), Microsoft Certified Systems Administrator (MCSA), Cisco Certified Network Associate (CCNA), Extreme Networks, Extreme Networks Associate (XNA), Extreme Certified Specialist (ECS), Extreme Design Specialist (EDS)
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3w
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IT Systems Administrator II
Garden Grove, California, United States
OnsiteFull Time
Evans Manufacturing
Evans Manufacturing: Evans Manufacturing is a promotional-products manufacturer making plastic and fabric branded goods for business customers.
2+ YOERequires 2+ years in Windows systems or network administration and two or more relevant certifications, such as CompTIA A+, CompTIA Network+, MCSA, or CCNA. Bachelor's degree or equivalent experience desired.
Active Directory, Entra ID, Hyper-V, VMware, Microsoft 365, Zoom Phone, Contact Center, Google Workspace, Windows Server, OS X, Linux, UniFi Access Points, UniFi Cameras, Checkpoint Harmony Endpoint Protection, Checkpoint Harmony Email & Collaboration, Ubiquiti UniFi, Exchange Online, Windows 365, Windows Sandbox
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1mo
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Network Systems Administrator
El Segundo, California, United States
$71k-$119k/yr OnsiteFull Time
ManTech International
ManTech International: Advancing the future of defense through innovative technology.
1+ YOEProvide day-to-day administration of secure Windows networks for classified environments; maintain servers, firewalls, backups, and support customers. Must hold TS/SCI and meet DoD IAT II certification requirements.
Microsoft Windows Server, Microsoft Exchange Server
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2mo
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Engineering Solutions Systems Administrator (TeamCenter)
Costa Mesa, California, United States
$146k-$194k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology developing AI-powered autonomous military systems.
2+ YOE2+ years TeamCenter PLM administration and engineering systems experience; knowledge of CAD/CAE tool integration, Windows/Linux, strong troubleshooting and communication, and must be a U.S. person.
TeamCenter, Teamcenter, PLM, MCAD, ECAD, CAE, MBSE, Requirements Management, NX, SimCenter, Siemens, Windows, Linux, Lattice OS
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2mo
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Junior Network Administrator
Victorville, California, United States
$65k-$78k/yr RemoteFull Time
Dynamic Solutions Technology
Dynamic Solutions Technology: Service-disabled veteran-owned IT consulting firm delivering strategic technology and billable professional services to government and commercial clients.
4+ YOEMinimum 4 years networking experience, CompTIA Network+ certification, high school diploma/GED, ability to evaluate systems and security, and maintain network documentation.
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1mo
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Retail Systems Support Administrator
Irvine, California, United States
$23-$26/hr OnsiteFull Time
Boot Barn
Boot BarnNYSE: BOOT: Nation's leading lifestyle retailer of western and work-related apparel.
2+ YOE2+ years with Epicor/Aptos or enterprise POS, strong communication and customer service, Bachelor's in CS/Business or equivalent experience, MS Office proficiency, ability to translate complex concepts.
Epicor, Aptos, POS, Microsoft Office Suite
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3d
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Administrator, Branch Office
Chatsworth, California, United States
$21/hr OnsiteFull Time
Certus
Certus: Private U.S. home-services operating pest-control and lawn-service brands for residential and commercial customers.
1+ YOEHigh school diploma or equivalent, 1+ year of administrative or customer service experience, and proficiency with Microsoft Word, Excel, Outlook, and CRM systems. PestPac and billing experience preferred.
Microsoft Word, Microsoft Excel, Microsoft Outlook, CRM, PestPac
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3mo
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Payroll Administrator
Torrance, California, United States
$25-$28/hr OnsiteFull Time
Lovisa
LovisaASX: LOV: Global fast-fashion jewellery and accessory retailer.
2+ YOEProcess Americas payroll, set up employees in time & attendance and payroll systems, maintain payroll records, respond to payroll inquiries, ensure accuracy and confidentiality.
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1w
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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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1d
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IT Systems & Facilities Administrator
Irvine or Inglewood or Long Beach or Los Angeles or Riverside or Oakland
$30/hr HybridFull Time
Irvine Clinical Research
Irvine Clinical Research: Independent clinical research site network studying memory loss, depression, obesity, neurology, and psychiatry for participants and sponsors.
1+ YOEBachelor's degree or equivalent technical experience; 1+ year administering Windows, Active Directory, Google Workspace, and Microsoft 365. Requires networking, cybersecurity, hardware troubleshooting, California driver's license, and ability to lift 50+ lbs.
Microsoft Active Directory, Google Workspace, Microsoft 365, Windows OS, Multi-Factor Authentication (MFA), Endpoint Detection & Response (EDR), routers, switches, Wi-Fi access points, VOIP, CTMS, CRM, webcams, microphones, headsets, DNS, temperature sensors, gateways, backup batteries, appliance dollies, hand trucks, moving straps, Home Depot, Enterprise
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11h
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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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3d
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Document Control Administrator
San Clemente, California, United States
$30-$40/hr OnsiteFull Time
XLR8 EMS
XLR8 EMS: Precision PCBA manufacturing with unmatched speed, quality, and flexibility.
2+ YOEHigh school diploma required; associate or bachelor's preferred. Requires 2+ years of manufacturing document control experience, advanced Microsoft Word and Adobe Acrobat proficiency, and quality-system familiarity.
Microsoft Word, Adobe Acrobat
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2w
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Systems Operator
Chino, California, United States
$25-$29/hr OnsiteFull Time
Walmart
WalmartNYSE: WMT: Global retail, e-commerce, and supply chain.
1+ YOERequires 6 months Walmart Logistics clerical experience or 1 year clerical experience using email, spreadsheets, and word processing applications. Accuracy and attention to detail are essential.
Microsoft Office
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1mo
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Branch Office Administrator - San Juan Capistrano, CA
San Juan Capistrano, California, United States
OnsiteFull Time
Edward Jones
Edward Jones: Financial services firm providing wealth management and investment advice.
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
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3w
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Application Administrator Assoc
El Segundo, California, United States
$74k-$93k/yr OnsiteFull Time
Kinecta Federal Credit Union
Kinecta Federal Credit Union: Member-owned nonprofit federal credit union providing banking, lending, insurance, and wealth services to members and employer groups.
1+ YOERequires nCino and Salesforce experience, 1–2 years of system administration, 5 years in financial services with commercial loan exposure, and a bachelor's degree or applicable technical experience.
nCino, Salesforce, Salesforce Financial Services Cloud, CASH, SilverLake, Symitar, Microsoft Windows, Microsoft Word, Microsoft Excel
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1w
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Data Security Administrator
Commerce or Los Angeles
$89k-$111k/yr HybridFull Time
AltaMed Health Services
AltaMed Health Services: Providing quality health and human services to underserved communities.
2+ YOEBachelor's degree in computer science, IT, cybersecurity, or related field; associate degree may qualify with experience. Requires 2–4 years in IT security or systems administration.
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5d
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Warehouse Clerical Support Administrator
Los Angeles, California, United States
$20-$29/hr OnsitePart Time, Seasonal
Best Buy
Best BuyNYSE: BBY: Multinational retailer of technology products and services.
Able to stand and sit for extended periods, work in a non-climate-controlled environment, lift up to 50 pounds, use Microsoft Office, and learn software and operating systems; customer service experience preferred.
Microsoft Office
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