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Posted August 05, 2026
Robert Half

Senior Administrative Assistant

Spring Valley, CA 91979, US Temporary
Compensation: $25 to $30 Hourly

Robert Half is seeking a highly organized and experienced Senior Administrative Assistant to provide advanced administrative support to leadership and teams within a dynamic office environment. This role requires strong communication skills, sound judgment, and the ability to manage multiple priorities while maintaining a high level of professionalism and confidentiality.


Key Responsibilities:

  • Provide high-level administrative support to executives, managers, or department teams
  • Manage calendars, schedule meetings, and coordinate travel arrangements
  • Prepare correspondence, reports, presentations, and other business documents
  • Screen calls, respond to inquiries, and direct communications appropriately
  • Organize meetings, prepare agendas, and record or distribute meeting notes as needed
  • Maintain files, records, and confidential documentation with accuracy and discretion
  • Track deadlines, support special projects, and follow up on action items
  • Coordinate office operations, supplies, and internal communications
  • Assist with expense reports, invoice processing, and other administrative tasks
  • Serve as a resource for junior administrative staff when applicable



Qualifications:

Qualifications:

  • 3+ years of administrative support experience, including experience supporting senior staff or executives preferred
  • Proficiency in Microsoft Office Suite, including Word, Excel, Outlook, and PowerPoint
  • Strong written and verbal communication skills
  • Excellent organizational, time management, and multitasking abilities
  • High attention to detail and ability to handle sensitive information confidentially
  • Ability to work independently and exercise sound judgment
  • High school diploma or equivalent required; additional education is a plus

Preferred Skills:

  • Experience supporting multiple leaders or departments in a fast-paced environment
  • Strong problem-solving skills and proactive approach to work
  • Familiarity with scheduling tools, expense management systems, or ERP software
  • Professional demeanor and strong interpersonal skills



Compensation

$25.00-$30.00 Hourly

About Us

TalentMatch®

Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more.

All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use and Privacy Notice.

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