135 junior systems administrator jobs at 95 companies in Rialto, CA

2mo
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Junior IT Systems Administrator (part-time)
Pasadena or United States
$35-$45/hr HybridPart Time
Carbon Mapper
Carbon Mapper: Detects and quantifies greenhouse gas emissions using satellite technology.
1+ YOE1–3 years systems administration or IT support experience; experience with Active Directory/Microsoft Entra ID, MDM (Addigy, Jamf, Intune), Windows/macOS endpoints, networking fundamentals, cloud services, and ability to travel to Pasadena-area sites and lift up to 50 lbs.
Windows, macOS, Active Directory, Microsoft Entra ID (Azure AD), Addigy, Jamf, Microsoft Intune, TCP/IP, DNS, DHCP, VLANs, Windows 10/11, Windows Server, Cisco, Fortinet, pfSense, Meraki, Microsoft 365, Google Workspace, Exchange Online, Microsoft Teams, SharePoint, Microsoft Intune/Endpoint Manager, Freshservice, Freshworks, ServiceNow, Ubuntu, RHEL, CentOS, PowerShell, Bash, VMware vSphere, Microsoft Hyper-V, Proxmox, Microsoft Azure, Amazon Web Services (AWS), Google Cloud Platform (GCP)
1w
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Systems Administrator - Surveillance
Highland, California, United States
OnsiteFull Time
Yuhaaviatam of San Manuel Nation
Yuhaaviatam of San Manuel Nation: Operates a luxury resort and casino in Southern California.
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)
2w
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Linux Systems Administrator II
Fullerton, California, United States
$6k-$9k/mo OnsiteFull Time
California State University
California State University: Public university system providing higher education and academic research.
2+ YOEBachelor's degree or equivalent experience, two years of relevant systems administration experience, Linux server administration, troubleshooting, scripting, virtualization, cloud technologies, communication, and a valid California driver's license.
Linux, High Performance Computing (HPC), Docker, Podman, Singularity, Apptainer, Kubernetes, Ansible, Puppet, Chef, Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform, Nagios, Prometheus, Grafana, Zabbix, Simple Linux Utility for Resource Management (SLURM)
2w
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IT Systems Administrator II
Garden Grove, California, United States
OnsiteFull Time
Evans Manufacturing
Evans Manufacturing: A manufacturing supporting IT infrastructure across its operations.
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
1mo
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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 building autonomous military hardware and software.
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
2mo
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Junior Network Administrator
Victorville, California, United States
$65k-$78k/yr RemoteFull Time
Dynamic Solutions Technology
Dynamic Solutions Technology: Provides IT, engineering, and program management services to government agencies.
4+ YOEMinimum 4 years networking experience, CompTIA Network+ certification, high school diploma/GED, ability to evaluate systems and security, and maintain network documentation.
3w
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Retail Systems Support Administrator
Irvine, California, United States
$23-$26/hr OnsiteFull Time
Boot Barn
Boot BarnNYSE: BOOT: Specialty retailer of western and work-related apparel and footwear.
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
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
1w
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Systems Operator
Colton, California, United States
$26-$30/hr OnsiteFull Time
Walmart
WalmartNYSE: WMT: Operates a chain of hypermarkets, discount stores, and grocery stores.
0.5+ YOERequires 6 months Walmart Logistics clerical experience or 1 year clerical experience using email, spreadsheets, and word processing applications.
Microsoft Office, Microsoft Excel
1mo
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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
1d
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Data Security Administrator
Commerce or Los Angeles
$89k-$111k/yr HybridFull Time
AltaMed
AltaMed: Provides comprehensive healthcare services to underserved Southern California 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.
1mo
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Systems Operations Specialist
Pasadena, California, United States
$26-$29/hr OnsiteFull Time
Sunbelt Controls
Sunbelt Controls: Provides building automation and systems integration for energy-efficient facilities.
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
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 PharmaceuticalsNASDAQ: ARWR: Develops RNAi medicines to treat genetic and 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
4w
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ERP Systems Coordinator
Fullerton, California, United States
$22/hr OnsiteFull Time
Bento Sushi
Bento SushiTokyo Stock Exchange: 7550: Produces sushi and ready-to-eat meals for retail and foodservice.
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
1w
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Operational Technology Administrator
Rancho Cucamonga, California, United States
OnsiteFull Time
Reyes Holdings
Reyes Holdings: Global distributor of food and beverage products.
1+ YOEBachelor’s degree with 1–2 years of OT systems experience, or high school diploma/GED with 3–5+ years. Requires industrial OT, network infrastructure, OT security, patch management, and incident response experience.
Operational Technology (OT), laser-guided vehicles, Human-Machine Interface (HMI), historians, servers, remote access, network devices, Industrial Control Systems (ICS), switches, routers, gateways, firewalls
2w
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Sales Administrator – Embedded Computer Industry
City of Industry, California, United States
OnsiteFull Time
Axiomtek
AxiomtekTaipei Exchange: 3088: Designs and manufactures industrial computers and embedded systems.
1+ YOE1–3 years of related sales support or customer service experience preferred, with strong organization and communication skills. Associate degree preferred; proficiency with Microsoft Office, CRM, and ERP systems.
Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Salesforce, SAP
2mo
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Administrator in Training (CA, Garden Grove, The Grove Post-Acute)
Garden Grove, California, United States
OnsiteFull Time
Anaheim Healthcare Center
Anaheim Healthcare Center: Provides skilled nursing, rehabilitation, and memory care services.
2+ YOEBachelor's degree in healthcare/business admin or related field; enrollment in/on track for Administrator in Training; strong communication; team collaboration; proficiency in MS Office and healthcare systems; valid driver's license.
Microsoft Office, Healthcare software systems
1mo
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HVAC Service Project Administrator
Brea, California, United States
$63k-$89k/yr HybridFull Time
Trane Technologies
Trane TechnologiesNYSE: TT: Global provider of heating, ventilation, and air conditioning solutions.
0+ YOEHigh school diploma or GED, up to 2 years related experience or training, strong communication, problem solving, basic accounting/financial systems familiarity, ability to prioritize and meet deadlines.
2w
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Timekeeping and Payroll Administrator
Brea, California, United States
$22-$25/hr OnsiteFull Time
Premier Ambulance
Premier Ambulance: Provides emergency and non-emergency ambulance medical transportation services.
High school diploma or GED required; payroll, timekeeping, or workforce management experience preferred. Requires computer-based payroll system proficiency, confidentiality, organization, and communication skills.
computer-based payroll/timekeeping systems
2w
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Timekeeping and Payroll Administrator
Brea, California, United States
$22-$25/hr OnsiteFull Time
Premier Ambulance
Premier Ambulance: Provides emergency and non-emergency ambulance medical transportation services.
High school diploma or GED required; payroll, timekeeping, or workforce management experience preferred. Requires computer-based payroll systems proficiency, confidentiality, organization, accuracy, and communication skills.

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