Administrative assistant jobs in Castro Valley, CA and nearby
Administrative assistant jobs within 25 miles of Castro Valley, CA. Nearby towns and cities are included. Distances are straight-line, not driving distances.
Counted
Hiring at a glance
View jobs- Open jobs
- 167
- Employers
- 130
Advertised starting pay
- Average starting payUSD / hour
- $26.41Across 69 listings
- Average starting payUSD / year
- $65,490Across 10 listings
Employer-advertised starting pay, not employee salaries. Currencies and pay periods stay separate.
Where work happens
- Remote
- 0%0 listings
- Hybrid
- 2%3 listings
- On-site
- 10%16 listings
Not specified: 89% (148 listings)
Employers hiring include Robert Half (7), Amergis (6), One Medical (5).
Sources & calculation notes
These figures describe the listings on this role page at the date shown, not the whole job market. Listings can change.
Employer-listed minimums from at least 10 listings per currency and pay period. These are advertised starting amounts, not employee salaries. Jobs without a minimum and unusual amounts are excluded.
Hybrid and on-site classifications may be inferred from descriptions. Check the original ad. How we count
About these jobs
Before you apply
Compare the office software, language skills and clerical experience requested in each ad. Job Bank lists secondary school and administrative training or previous clerical experience as typical requirements. Individual employers set their own criteria. Job Bank / Guichet-Emplois.
Guidance reviewed on September 16, 2026.
Based on the dated count above. Listings can change. How we count
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Administrative Assistant
Robert Half
We are looking for a highly organized Administrative Assistant to support senior leadership within a mission-driven non-profit organization in Oakland, California. This Contract position…
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ADMINISTRATIVE ASSISTANT
NORTH EAST MEDICAL SERVICES
The Administrative Assistant is responsible for supporting the Executive Assistant(s) and the Administration department through a variety of general clerical duties and special projects.
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Senior Administrative Assistant
Hope Program, A Licensed Clinical Social Worker Professional Corporation
Senior Administrative Assistant & Program Manager
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Administrative Assistant
Roto-Rooter Services Company
…internal growth, we have an excellent opportunity available for an Administrative Assistant at our West Bay branch, located in East Palo Alto, CA. The hourly rate for this position is…
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School Secretary I - Collins Elementary 27TP074
West Contra Costa Unified School District
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Administrative Assistant / Cashroom Manager
Jetro Holdings, Inc
The Administrative Assistant / Cash Room Manager is responsible for overseeing administrative, payroll, and cash handling operations to ensure accuracy, compliance, and operational…
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Human Resources Administrator
Stanford University
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Administrative Assistant
ManpowerGroup
Our client, a dynamic and innovative startup environment, is seeking an Administrative Assistant to join their team. As an Administrative Assistant, you will be part of the Operations &…
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Administrative Assistant
Manpower
Our client, a dynamic and innovative startup environment, is seeking an Administrative Assistant to join their team. As an Administrative Assistant, you will be part of the Operations &…
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Human Resources Administrator
Stanford
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Administrative Assistant
Express Employment Professionals
We are looking to hire an administrative assistant. We are looking for someone who has great interpersonal skills, and office skills. This is a temporary position, for Monday - Friday from…
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Administrative Assistant
Amergis
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Administrative Support Assistant (OA)
National Park Service
Summary You will serve as an Administrative Support Assistant (OA) with National Park Service. The primary purpose of the position is to provide administrative information and assistance to…
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Administrative Assistant
ChanceLight Behavioral Health, Therapy, & Education
…organization with a social mission to offer hope, is seeking an Administrative Assistant to join our award-winning Special Education team and perform meaningful work in a culture that…
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HR Administrative Assistant
Suncrest Hospice
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Sr Administrative Assistant, Institutional
Stifel
The Sr Administrative Assistant provides a higher level of support on a variety of administrative functions to senior level leadership and other senio
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ADMINISTRATIVE ASSISTANT I
City of El Cerrito
The City of El Cerrito Public Works Department is seeking a Part-Time Administrative Assistant I to support recycling operations and regulatory compliance within the Department’s Operations…
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Administrative Assistant
Randstad USA
Administrative Assistant, Product Pay Rate: 70-85 per hour Menlo Park, CA - Hybrid Temp to Perm - 6 month contract About this role: As an admin floater, you’ll have the opportunity to…
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Administrative Secretary - District Office (Administrative Services)
Orinda Union School District
Under general direction, to perform responsible administrative secretarial duties to support a complex District program; to apply knowledge of District policies, rules, regulations,…
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School Secretary - Probationary - Menlo-Atherton High School
Sequoia Union High School District
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Administrative Assistant
DMG North INC
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Administrative Assistant I (MESA) (35%)
Foothill-De Anza Community College District (CA)