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60 Mason Administrative Assistant Jobs Hiring Near You

Ocean Stone & masonry

Administrative Assistant

Holtsville, NY · On-site

$18.25 - $24.50/hr

... Administrative Assistant to join our team. In this role, you will provide support to our office employees, ensuring they have all the information and resources they need to perform their best. Your ...

CommonSpirit Health

Medical Assistant - Registered

Seattle, WA · On-site

$20.25 - $26/hr

... Administrative Assistant, Medical Assistant, or Nursing Assistant Program * Medical Assistant Registered (MA-R) through the State of Washington, sponsored by Virginia Mason, required within 60 days ...

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Mason Jobs Information

Do workers at Mason Companies get paid breaks?

Yes. Most people get paid breaks.
100% of people say they get paid breaks.
Based on data from 5 people who took the Breakroom Quiz between March 2025 and January 2026.

Does Mason Companies pay people when they’re sick?

Yes. Most people get paid when they’re sick.
80% of people say they would get paid if they were sick but scheduled to work.
Based on data from 5 people who took the Breakroom Quiz between March 2025 and January 2026.

How easy is it to get time off at Mason Companies?

Some people find it hard to get time off.
40% of people report it’s hard to get time off.
Based on data from 5 people who took the Breakroom Quiz between March 2025 and January 2026.

Is it stressful to work at Mason Companies?

Most people feel stressed here.
100% of people say they often feel stressed at work.
Based on data from 5 people who took the Breakroom Quiz between March 2025 and January 2026.

Do people at Mason Companies recommend working with their team?

Not many people recommend working with their team.
83% of people report that they wouldn’t recommend working with their immediate team to a friend.
Based on data from 6 people who took the Breakroom Quiz between March 2025 and January 2026.

Do people get enough training when they start at Mason Companies?

Some people didn’t get enough training when they started.
60% of people report they didn’t get enough training when they started working here.
Based on data from 5 people who took the Breakroom Quiz between March 2025 and January 2026.

Do people get support to advance at Mason Companies?

Most people aren’t given support to advance their career here.
In the last year, 80% of people report not being given support to advance their career here.
Based on data from 5 people who took the Breakroom Quiz between March 2025 and January 2026.

Do people think Mason Companies’s headquarters understands what’s happening where they work?

Most people think headquarters doesn’t understand what’s happening where they work.
80% of people think that this employer’s headquarters or owners don’t have a good understanding of what’s really happening where they work.
Based on data from 5 people who took the Breakroom Quiz between March 2025 and January 2026.

What other companies are hiring for Administrative Assistant jobs?

What are the most popular jobs at Mason?

What are the most popular categories at Mason?

Infographic showing various Administrative Assistant job openings at Mason in the United States as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% Physical job distribution.

Administrative Assistant, Advancement

Virginia Jobs

Fairfax, VA • On-site

$17.50 - $24/hr

Other

Posted 13 days ago

Job description

Department: Costello College of Business
Classification: GMU Worker
Job Category: Part-Time / Hourly Wage
Job Type: Part-Time
Work Schedule:
Location: Fairfax, VA
Workplace Type: Hybrid Eligible
Sponsorship Eligibility: Not eligible for visa sponsorship
Salary: Salary commensurate with education and experience
Criminal Background Check: Yes
About the Department:
The Donald G. Costello College of Business at George Mason University is one of the largest business schools in Virginia, and is located near Washington, D.C., in Arlington and Fairfax, and at George Mason's global campus in Incheon, South Korea. The college's AACSB-accredited business and accounting curricula prepare undergraduate and graduate students from the U.S. and across the globe for career success in business and government. Its research-based faculty and focus on multi-disciplinary academic programs, inclusive entrepreneurship, modular education, experiential learning, and corporate partner engagement are transforming the landscape of business education and workforce development.Learn more atbusiness.gmu.edu.
The Office of Advancement at the Costello College of Business supports fundraising, alumni engagement, and donor stewardship efforts. This role contributes to the successful execution of events, data integrity, and donor engagement strategies as the College continues to expand its programs and outreach.
About the Position:
This part-time wage position provides administrative and operational support to the Office of Advancement. The role supports donor and board data management, event coordination, stewardship activities, and internal operations. This position is essential to maintain accurate records, supporting engagement efforts, and ensuring successful execution of Advancement programs.
Hours: Up to 29 hours per week.
Responsibilities:
Administrative Support
  • Maintains and updates donor, prospect, and board records in Patriot Force (Salesforce), including activity reports;
  • Reviews and updates advisory board rosters; assists with reporting and data cleanup;
  • Maintains electronic filing systems (SharePoint, Teams, shared drives);
  • Supports procurement processes, including eVA submissions and order tracking;
  • Supports stewardship efforts - drafting and processing donor thank-you correspondence, gift packaging and mailing;
  • Conducts basic prospect research and handles confidential information with discretion; and
  • Annual Giving Campaign reporting.
Event Support
  • Assists with event logistics, including RSVP tracking, registration lists, and materials preparation;
  • Supports event setup, execution, and breakdown (as necessary);
  • Leads registration processes and tracks attendance at events;
  • Reconciles attendance data in Salesforce post-event;
  • Assists with coordination of marketing materials and website data integrity; and
  • Event based donor tracking and engagement reporting.
Special Projects and Other Related Duties
  • Executes special projects and duties as assigned to support the department.
Required Qualifications:
  • Prior administrative or office experience;
  • Experience working in a fast-paced environment;
  • Experience purchasing goods and services for an organization;
  • Strong organizational skills and attention to detail;
  • Effective written and verbal communication skills;
  • Ability to handle sensitive and confidential information;
  • Proficiency in Microsoft Office Suite (Excel and Word, including mail merge);
  • Strong interpersonal and customer service skills;
  • Ability to learn CRM and reporting systems (e.g., Salesforce, Anthology, MicroStrategy);
  • Ability to manage multiple priorities and meet deadlines; and
  • Ability to lift and carry up to 20 pounds (event materials) and transportation to events.
Preferred Qualifications:
  • Experience in higher education, nonprofit, or advancement environments; and
  • Familiarity with event coordination or donor stewardship processes.

Instructions to Applicants:
For full consideration, applicants must apply for Administrative Assistant, Advancement at https://jobs.gmu.edu/. Complete and submit the online application to include three professional references with contact information, and provide a cover letter and resume for review.
Posting Open Date: June 9, 2026
For Full Consideration, Apply by: June 16, 2026
Open Until Filled: Yes
Each agency within the Commonwealth of Virginia is dedicated to recruiting, supporting, and maintaining a competent and diverse work force. Equal Opportunity Employer

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