163 junior systems administrator jobs at 114 companies in Acton, 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
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
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
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
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.
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
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
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
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
1w
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IT Systems Engineer
Westlake Village, California, United States
OnsiteFull Time
Oaks Christian School
Oaks Christian School: Nonprofit, non-denominational Christian college-preparatory day and boarding school serving TK–12 students.
2+ YOEBachelor's degree in computer science, computer information systems, or related field; 2+ years with Cisco, Microsoft, and Apple networking technologies; network protocols and systems administration experience.
Microsoft Office 365, Google Chrome, Google Suite, Microsoft Deployment Tools (MDT), Apple Device Enrollment Program (DEP), Windows Server, Microsoft Active Directory, Microsoft Exchange, SQL, IIS, Cisco IP Phones, TCP/IP, DNS, DHCP
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.
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
1mo
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Systems Operations Specialist
Pasadena, California, United States
$26-$29/hr OnsiteFull Time
ACCO Engineered Systems
ACCO Engineered Systems: Mechanical contractor providing design, construction, and maintenance services.
High school diploma or equivalent, data entry (50 WPM), strong organizational skills, payroll entry, timesheet processing, documentation of start-up and warranty reports, proficiency with Microsoft Excel/Word, Gmail, Google Drive/docs/sheets, PDF Writer, Bluebeam, Smartsheet, Box, Rhumbix, and 360/IFS.
Microsoft Excel, Microsoft Word, Gmail, Google Drive, Google Docs, Google Sheets, PDF Writer, Bluebeam, Smartsheet, Box, Rhumbix, 360/IFS
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
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
4d
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Lease Administrator I
Chicago or Los Angeles or Boston or Washington, D.C. or Atlanta or Houston or West Conshohocken or Pittsburgh or Cleveland or Columbus or Indianapolis
$47k-$65k/yr OnsiteFull Time
Avison Young
Avison Young: Privately owned global commercial real estate advisory firm serving occupiers, investors, developers, lenders, and the public sector.
1+ YOEHigh school diploma required; bachelor's degree preferred. Requires 1–3 years of relevant experience, Excel proficiency, lease or property management system experience, accuracy, organization, and communication skills.
Microsoft Office Suite, Microsoft Excel, CoStar, Leasecake, Corom, MRI/ProLease, Tango, TRIRIGA
4w
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Network & Infrastructure Administrator
Rancho Dominguez, California, United States
OnsiteFull Time
IDEMIA
IDEMIA: Global leader in biometric and security technologies.
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.
3d
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Analyst, Enterprise Business Systems - Remote
Calabasas, California, United States
$74k-$110k/yr RemoteFull Time
Harbor Freight Tools
Harbor Freight Tools: National tool and equipment retailer.
2+ YOE2+ years in Workfront administration, business systems, digital transformation, process automation, AI enablement, PLM administration, or related fields; bachelor's degree preferred; strong analytical, documentation, troubleshooting, and communication skills.
Adobe Workfront, Fusion, PLM, Databricks, Tableau, Microsoft SharePoint, Microsoft 365, Microsoft Project, Smartsheet, Jira, Copilot, ChatGPT, Claude
3mo
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Business Analyst, Finance Systems
Madison or Pasadena or San Diego or Verona
$60k-$75k/yr OnsiteFull Time
Arrowhead Pharmaceuticals
Arrowhead PharmaceuticalsThe Nasdaq Global Select Market: ARWR: Public biopharmaceutical developing gene-silencing RNAi medicines for patients with intractable diseases.
0+ YOEBachelor’s degree in Finance, Accounting, Business Administration, Information Systems, or related field; 0-2 years in ERP support; knowledge of P2P/O2C; strong communication; cross-functional collaboration.
Power Platform, Power BI, Power Apps, Power Automate, Microsoft Fabric, Azure Synapse, SQL Server, Dynamics 365 Finance & Operations
1mo
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ERP Systems Coordinator
Fullerton, California, United States
$22/hr OnsiteFull Time
Bento
Bento: Canada’s #1 grab and go sushi and hot Asian food specialist.
Provides day-to-day ERP administration for commissary operations, strong data accuracy and attention to detail, MS Office proficiency, good verbal and written communication.
JustFoods, Microsoft Office