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182 admin support jobs at 139 companies in Ontario, CA

2w
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Front Office Admin Support - Digestive Diseases, Westwood
Los Angeles, California, United States
$26-$37/hr OnsiteFull Time
UCLA Health
UCLA Health: Provides comprehensive hospital services and academic medical research.
Provide administrative and patient care support, coordinate patient flow and appointments, communicate with physicians and staff, prioritize tasks, and use office software for scheduling and recordkeeping.
Microsoft Word, Microsoft Excel, Email
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5d
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PT - Human Resources Admin Support
Corona, California, United States
$22-$25/hr OnsitePart Time
Troy Lee Designs
Troy Lee Designs: Designs and manufactures protective gear for mountain bikers and motorcyclists.
1+ YOE1–3 years office/admin experience (HR preferred). Proficiency with Microsoft Office and Google Workspace, strong communication, discretion with confidential info, detail-oriented, ability to lift up to 35 lbs.
Microsoft Excel, Microsoft PowerPoint, Microsoft Word, Microsoft Outlook, Microsoft Teams, Microsoft Office, Google Workspace
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3d
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Production Support (Admin) Lead
Garden Grove, California, United States
$25-$30/hr OnsiteFull Time
Winchester Interconnect
Winchester Interconnect: Manufacturer of precision-engineered interconnect solutions for harsh environments.
3+ YOEU.S. Person required (ITAR). Minimum 3 years production control/production planning experience in manufacturing, aerospace/defense preferred. Lead/mentorship experience, expert Syspro ERP proficiency, ability to read technical drawings, AS9100 knowledge, strong communication and problem-solving.
Google Workspace, ADP, Syspro, QMS
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1mo
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Brand Admin
West Hollywood, California, United States
$25-$35/hr HybridPart Time
Princess Polly
Princess PollyNYSE: AKA: Online fashion retailer selling trend-driven apparel and accessories.
4+ YOEMinimum 4 years administrative/EA/operational support experience; invoice processing and financial tracking; high-level scheduling, documentation, and executive support; proficiency with Microsoft Office Suite and Google Workspace; discretion with confidential information.
Microsoft Office Suite, Google Workspace
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2w
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Student GCI Admin Assistant
Orange, California, United States
$17/hr OnsitePart Time, Temporary
Chapman University
Chapman University: A private university offering undergraduate and graduate degree programs.
Little to minimal prior experience; ability to learn support processes; familiarity with Microsoft Office; flexible availability for events; sophomore/junior students preferred.
Microsoft Office
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1mo
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Team Admin Coordinator
San Bernardino, California, United States
$20-$22/hr OnsitePart Time
Chick-fil-A
Chick-fil-A: Operates a chain of quick-service chicken sandwich restaurants.
Perform office administration, HR support, and team care; manage administrative functions and internal HR communications; valid driver's license and personal vehicle required (mileage reimbursed).
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1mo
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Office Admin (Billing)
Lake Forest, California, United States
$16-$20/hr OnsiteFull Time
ServiceMaster Contract Services
ServiceMaster Contract Services: Professional janitorial and commercial cleaning services provider.
Experience in service industry preferred; strong communication, multitasking, detail orientation; able to pass background check; HS diploma preferred.
Microsoft Word, Spreadsheets, PC, iPad
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2mo
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ROAM US Office Admin Intern
Chicago or Los Angeles or New York City
$20/hr OnsiteInternship, Part Time
ROAM
ROAM: A global independent booking agency for musicians and performers.
Support office administration and shared resources, produce ticket count reports, assist festival and marketing teams, manage multiple concurrent projects, and use Google Workspace, Excel, and Word. Open to current students or recent grads.
Google Workspace, Microsoft Excel, Microsoft Word
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2mo
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Admin/Child Aid
Los Angeles, California, United States
$25-$30/hr OnsiteFull Time
Veterans Village of San Diego
Veterans Village of San Diego: Provides housing, healthcare, and employment support to military veterans.
2+ YOE2+ years in customer service and administration; MS Excel, email, word processing; strong communication; problem solving; confidentiality; ability to handle high-volume calls.
MS Excel, Email, Word processing
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3mo
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Administrative Support Specialist
Andrews AFB or Huntsville or Charleston AFB or Dover AFB or Dyess AFB or Fairchild AFB or Little Rock AFB or MacDill AFB or March ARB or McChord AFB or McConnell AFB
OnsiteFull Time
B3H
B3H: Provides professional services and technical support for defense agencies.
2+ YOEHigh school diploma required; associate degree preferred; 2+ years squadron admin/deployment support; strong organizational and customer service skills.
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2mo
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Administrative Support Coordinator
Los Angeles, California, United States
$20/hr OnsiteFull Time
Allied Universal
Allied Universal: Provides professional security guarding and facility maintenance services.
5+ YOE5+ years admin experience; 2+ years supporting executive leadership; HS diploma; strong communication; MS Office; calendar and travel coordination.
Microsoft Office, Calendar management software, Inventory management system, Accounting software
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1mo
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Finance and Admin Coordinator
Los Angeles, California, United States
$50k-$55k/yr HybridFull Time
Sony Music Entertainment
Sony Music EntertainmentNYSE: SONY: Produces and distributes recorded music and publishing services.
1+ YOEExperience as a finance or administrative assistant; proficient in MS Office; able to handle confidential info; strong organization; bachelor's degree preferred.
Microsoft Office, Excel, OneDrive, Box, QuickBooks Online, Adobe Creative Suite, Premiere
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3w
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CTE Program Support Specialist
Yucaipa or San Bernardino
$28-$30/hr OnsiteFull Time
San Bernardino Community College District
San Bernardino Community College District: Operates community colleges and public broadcasting in San Bernardino.
4+ YOEProvide administrative support for CTE programs including compliance tracking, accreditation documentation, scheduling, budget/purchasing support; requires HS + 15 semester units (or HS + 5 years admin experience) and 4 years admin experience including 1 year supporting CTE/health sciences/public safety.
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3mo
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Service Admin/Service Advisor
Montclair, California, United States
$28-$34/hr OnsiteFull Time
Stotz Equipment
Stotz Equipment: Sells and services John Deere agricultural and construction machinery.
Strong customer focus with service knowledge; highly organized; capable of multi-tasking; basic mechanical knowledge; proficient with MS Word/Excel and service software.
Microsoft Word, Microsoft Excel, Service management systems
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1mo
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Support Specialist, PK Director’s Action Group (DAG) – Space Systems Command
El Segundo, California, United States
$90k-$110k/yr OnsiteFull Time
BTAS
BTAS: Provides administrative support services to a government defense Directorate.
5+ YOESecret clearance; 5 years DoD executive admin support; 1 year college.
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2mo
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HR/Personnel Support Specialist - Military Personnel Support Specialist (MILPERS) – Senior
El Segundo, California, United States
OnsiteFull Time
Astrion
Astrion: Provides engineering, cybersecurity, and mission support services.
10+ YOEBachelor’s degree; 10+ years in military personnel admin; DoD/ Space Force experience; MS Office proficiency; strong organization and communication.
Microsoft Office Suite
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3mo
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Sales Support Specialist
Irvine, California, United States
$30-$34/hr OnsiteFull Time
McKinley Equipment
McKinley Equipment: Sells and services industrial equipment, elevators, and loading docks.
3+ YOE1-3+ years in sales support or related admin role; experience in construction is a plus; strong CRM and MS Office skills; high school diploma required.
CRM (Salesforce preferred), Microsoft Office, Google Workspace
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11h
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Admin Assistant
Eastvale, California, United States
$22/hr HybridFull Time
ServiceMaster by Crane IFS
ServiceMaster by Crane IFS: Provides professional commercial janitorial and facility cleaning services.
Perform onboarding/offboarding, background checks, offer letters, timekeeping, training compliance, record maintenance, and candidate screening; hybrid role with strong Microsoft Teams and administrative skills.
Microsoft Teams
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2w
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HR Admin/Recruiter
Neenah or Brea or Fort Myers or Pasig or Belize City or Mexico City
OnsiteSeasonal
Alta Resources
Alta Resources: Provides outsourced customer care and sales services for brands.
0.5+ YOEBachelor's degree required; at least 6 months HR experience (call center preferred); English proficiency; experience with ATS/HRIS, Microsoft Word/Excel/PowerPoint/Outlook; supports end-to-end recruiting, onboarding, and HR admin tasks.
Windows, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, ATS, HRIS, Internet
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3w
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701-Human Resources - 2041-701 P/T HR Admin Specialist
Laguna Woods, California, United States
$18-$20/hr OnsitePart Time
Village Management Services
Village Management Services: Provides management and maintenance for Laguna Woods Village residents.
Performs receptionist and routine clerical HR duties; greets visitors, answers phones, processes applications, supports HR projects, conducts I-9 audits, uses OnBase, and communicates in English and Spanish.
OnBase
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