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Senior Office Specialist

Pro Staff

Riverside, CA · Posted November 4, 2026

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How AI is used in this kind of work

Among office clerks, general, AI is already used for a large share of the tasks. Measured exposure for office clerks, general: 45% (high).

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Skills this job asks for

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  • Excel
  • Workday
  • Acrobat

About the job

Now hiring for a Senior Office Specialist

Location: Riverside, CA

Pay Rate: $27.84 per hour

Schedule: Monday, Wednesday, Friday | 8:30 AM-4:30 PM

Start your next chapter with Staffmark, where people come first, and every role makes an impact.

Looking for Senior Office Specialist jobs in Riverside where your skills can make a real impact? This opportunity offers the chance to contribute to a growing team, develop your experience, and build a rewarding career in a professional work environment.

If your skills and experience are a good match for this role please apply today. This opportunity is being offered by Staffmark to qualified candidates.

Experience Requirements

High School Diploma or GED required

Minimum of 3 years of administrative or office support experience

Proficiency with Microsoft Excel and Adobe Acrobat

Strong attention to detail and organizational skills

Experience composing professional emails and business correspondence

Ability to prioritize tasks and meet deadlines in a fast-paced office environment

Strong verbal and written communication skills

Ability to maintain confidential and sensitive information

Physical Capabilities

Ability to sit and work at a computer for extended periods

Ability to perform administrative office duties throughout the workday

Ability to occasionally lift and carry office materials and files

Ability to manage multiple tasks while maintaining accuracy and attention to detail

Job Duties

Provide administrative support to department staff and leadership

Create, organize, maintain, and update division files and records

Draft emails, letters, reports, and other business correspondence

Schedule, coordinate, and organize meetings and appointments

Prepare and distribute mailings and office communications

Maintain records, documentation, and filing systems

Enter and update information using office software programs

Assist with special projects and additional administrative tasks as assigned

Support daily office operations while ensuring accuracy and efficiency

Benefits

Competitive Weekly Pay

Comprehensive Benefits including medical, dental, and vision coverage.

Life Insurance and Disability Insurance for added peace of mind.

Optional 401(k) Plan to help you prepare for the future.

Opportunities for Growth through a variety of assignments with leading employers.

Jobs You Can Count On

“They are so reliable at helping you find jobs.” – Matthew, Staffmark Associate

What You Will Do

As a Senior Office Specialist you will perform responsibilities that support the daily operations of your assigned employer while following established procedures, quality standards, and workplace safety requirements. Duties may include operating equipment, working with customers, handling materials, preparing documentation, supporting administrative activities, using technology, collaborating with team members, or completing other responsibilities appropriate to the position. Successful Senior Office Specialist professionals demonstrate adaptability, professionalism, attention to detail, and a commitment to producing quality work while contributing to organizational success.

The Senior Office Specialist performs work that contributes directly to organizational productivity and customer satisfaction. This role requires dependable attendance, attention to detail, and the willingness to learn new skills as business needs evolve.

Successful Senior Office Specialist professionals demonstrate professionalism, adaptability, and a positive attitude while helping organizations achieve operational excellence.

This career offers opportunities to build valuable experience across a wide variety of industries.