Senior Office Specialist
Pro Staff
Riverside, CA · Posted November 4, 2026
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Where Riverside, CA ranks
Where Riverside, CA placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #2Cities with the most jobs that need no experience in the West Coast4.8% · of 66
- #3Cities where the biggest share of jobs do not need a four-year degree in the West Coast26% · of 53
- #6Best college towns for junior jobs in the West Coast37% · of 50
- #6Best cities for junior jobs in California36% · of 54
- #8Best cities for junior jobs in the West Coast36% · of 71
- #25Cities with the most jobs that do not need a four-year degree in the West Coast31 jobs · of 47
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).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
Skills this job asks for
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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.