167 administrative assistant jobs at 112 companies in Rosamond, CA

3d
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Administrative Assistant
Sun Valley, California, United States
$18-$25/hr OnsiteFull Time
Totally Kids Specialty Healthcare
Totally Kids Specialty Healthcare: Pediatric sub-acute hospital providing specialized long-term medical care.
2+ YOEHigh school diploma required, two years of administrative assistant experience, English communication skills, and proficiency with Windows-based systems and Microsoft Word; healthcare experience preferred.
Windows, Microsoft Word, Microsoft Excel, Microsoft Access, Microsoft PowerPoint
1w
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Administrative Assistant
Bakersfield or Brentwood or Beverly Hills or Clovis or Chino or Chino Hills or Costa Mesa or Downtown Los Angeles or Fresno or Fullerton or Hemet or Huntington Park or Lake Elsinore or Lakewood or Mission Viejo or North Hollywood or Riverside or Santa Ana or Upland or Torrance
OnsiteFull Time
Aava Dental
Aava Dental: Provides comprehensive general and cosmetic dental care services.
Perform office administrative tasks including phone screening, scheduling and calendar management, preparing meeting documents, filing, mail handling, and maintaining office supplies.
1w
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Administrative Assistant
Pasadena, California, United States
$22-$24/hr OnsiteFull Time
Oak Knoll Montessori School
Oak Knoll Montessori School: Provides Montessori-based early childhood and adolescent education services.
2+ YOERequires 2+ years of administrative experience, strong communication and organizational skills, Google Workspace proficiency, confidentiality, and ability to manage multiple priorities. 12 ECE units required or obtainable.
Google Workspace, Google Docs, Google Sheets, Google Calendar, Gmail, Transparent Classroom, Bloomz
2mo
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Administrative Assistant
Pasadena, California, United States
$20-$35/hr OnsiteFull Time
East West Bank
East West BankNASDAQ: EWBC: Provides commercial and consumer banking services across US and Asia.
5+ YOE5+ years executive administrative experience; high school diploma or GED (Bachelor's preferred); proficiency in Microsoft Office and Outlook; strong time management, organization, confidentiality, and travel coordination skills.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Microsoft Outlook
3w
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Administrative Assistant
Valencia, California, United States
$24-$36/hr OnsiteFull Time
Henry Mayo Newhall Hospital
Henry Mayo Newhall Hospital: Provides comprehensive hospital and emergency medical care services.
2+ YOEHigh school diploma required; 2+ years administrative experience in healthcare; typing 60 WPM; proficiency with Microsoft Outlook, Word, Excel, PowerPoint; strong judgment, prioritization, and interpersonal skills.
Microsoft Outlook, Microsoft PowerPoint, Microsoft Word, Microsoft Excel
2mo
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Administrative Assistant
Pasadena, California, United States
OnsiteFull Time
Caltech
Caltech: Provides university-level education and scientific research services.
3+ YOEBachelor's degree or equivalent experience, 3+ years administrative support (academic preferred), Microsoft Office proficiency, experience with AI tools (ChatGPT, Claude, CoPilot), strong writing, proofreading, scheduling, and grant support skills.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft 365 automations, ChatGPT, Claude, CoPilot
5d
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Administrative Assistant 4
Palmdale, California, United States
$67k-$111k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
6+ YOEHigh school diploma or equivalent and 6 years of administrative experience. Requires Microsoft Teams and PowerPoint proficiency and ability to obtain and maintain a DoD Secret clearance.
Microsoft Teams, Microsoft PowerPoint, Concur, iBuy, Edge
7h
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Corporate - Administrative Assistant
Burbank, California, United States
$23-$27/hr OnsiteFull Time
Enki Health Services
Enki Health Services: Provides community-based mental health and behavioral health services.
3+ YOEHigh school diploma or equivalent and three years of clerical experience, including one year of administrative work. Requires Microsoft Office proficiency, organization, communication, and multitasking skills.
Microsoft Word, Microsoft Outlook, Microsoft PowerPoint, Microsoft Excel
3d
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Administrative Assistant - Psychiatry
Santa Clarita, California, United States
$23-$26/hr OnsiteFull Time, Temporary
Child & Family Center
Child & Family Center: Offers mental health and domestic violence support services.
4+ YOEBachelor’s degree in mental health or related field plus four years of administrative experience, or equivalent education substitution. Requires Spanish-English bilingual proficiency, California driver’s license, clearances, and organizational skills.
Microsoft Excel, EXYM, Zoom, Quest Diagnostics
1w
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Senior Administrative Assistant (PROMOTIONAL ONLY)
Santa Clarita, California, United States
$6k-$7k/mo OnsiteFull Time
William S. Hart Union High School District
William S. Hart Union High School District: Provides public secondary education to students in Santa Clarita.
5+ YOEAssociate degree in business or related field and five years of progressive secretarial experience, including three years as an administrative assistant; driver’s license required.
Microsoft Excel
1mo
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Administrative Assistant I
Adelanto, California, United States
$23-$30/hr OnsiteFull Time
Clark Pacific
Clark Pacific: Designs and manufactures prefabricated building systems and precast concrete.
1+ YOEHigh school diploma or equivalent required; minimum 1 year administrative experience preferred; experience in construction/concrete preferred; duties include timekeeping, report distribution, schedule reporting, data entry, and confidential handling of information.
1w
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Administrative Assistant
Burbank, California, United States
$17-$18/hr OnsiteFull Time
Our Best Life
Our Best Life: Operates and supports a network of dental and orthodontic practices.
High school diploma or equivalent required; strong interpersonal, customer service, communication, organizational, multitasking, prioritization, and attention-to-detail skills.
1mo
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Administrative Assistant
Acton or British Columbia or California or Colorado or Illinois or Massachusetts or Maryland or Minnesota or New Jersey or New York or Vermont or Washington
$19-$22/hr OnsiteFull Time
Equity LifeStyle Properties
Equity LifeStyle PropertiesNYSE: ELS: Owns and operates manufactured home communities and RV resorts.
1+ YOEHigh-school diploma or equivalent, 1+ year office experience, proficiency with Microsoft Word and Excel and automated accounting systems, strong communication and organizational skills, attention to detail, and willingness to work a flexible schedule including weekends.
Microsoft Word, Microsoft Excel, automated accounting systems
1mo
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Administrative Assistant
North Hollywood, California, United States
$21-$22/hr OnsiteFull Time
Southern California Alcohol and Drug Programs
Southern California Alcohol and Drug Programs: Provides substance abuse treatment and supportive housing services.
2+ YOEHigh school diploma, 2 years office/clerical experience, fingerprint/background clearance, ability to handle stressful client interactions, strong interpersonal and clerical skills.
1mo
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Administrative Assistant
Burbank, California, United States
$22-$25/hr OnsiteFull Time
Compass Palliative Care
Compass Palliative Care: Provides personalized palliative care and support to patients with serious illnesses, partnering with primary care physicians to deliver compassionate care.
Strong organizational and multitasking skills, Microsoft Office familiarity, attention to detail, professional communication; previous healthcare experience is a plus.
Microsoft Office
1w
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Administrative Assistant
North Hollywood, California, United States
$20/hr OnsiteFull Time
Service Corporation International
Service Corporation InternationalNYSE: SCI: Provides funeral, cemetery, and cremation services to families.
3+ YOEHigh school diploma or equivalent, 3 years in a customer-focused, fast-paced professional environment, advanced computer and word-processing skills, 40–60 wpm typing, confidentiality, communication, and minimal-supervision skills.
Internet, Microsoft Word, Fax machines, Copiers, Printers, Telephone console
2mo
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Administrative Assistant
Sylmar, California, United States
$17-$20/hr OnsiteFull Time
ServiceMaster Contract Services
ServiceMaster Contract Services: Professional janitorial and commercial cleaning services provider.
High school diploma preferred; strong communication, detail orientation, organizational skills; ability to multi-task; background check may be required.
3mo
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Administrative Assistant
Adelanto or Corona
$20-$24/hr OnsiteFull Time
Applus IDIADA
Applus IDIADABolsa de Madrid: APPS: Engineering and testing services for the global automotive industry.
2+ YOEBooking travel, expense handling, scheduling, and office support; requires HS diploma, 2+ years experience; SAP preferred.
SAP, Microsoft Word, Microsoft Excel
2w
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Front Desk Administrative Assistant
Van Nuys, California, United States
$21-$24/hr OnsiteFull Time
Clear Behavioral Health
Clear Behavioral Health: A provider that supports individuals with mental health and substance use challenges through compassionate, evidence-based care.
1+ YOE1+ year front-desk or administrative experience; strong written and verbal communication; proficiency with Apple iOS and Microsoft Word/Excel; ability to multitask and maintain confidentiality under HIPAA.
Apple iOS, Microsoft Word, Microsoft Excel
1w
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Construction Administrative Assistant
Burbank, California, United States
$23-$25/hr OnsiteFull Time
Four Tribes Enterprises
Four Tribes Enterprises: Tribally owned general contractor serving federal government agencies.
1+ YOEMinimum one year of administrative experience, Microsoft Office and Adobe Acrobat knowledge, construction terminology familiarity, strong communication and organizational skills, and ability to pass a federal background check.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, Adobe Acrobat