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Assistant Admin Jobs in Rialto, CA (NOW HIRING)

Student Admin/AOD

Orange, CA · On-site

$16.90/hr

... Position Title Student Admin/AOD Academic Year Academic Year 2026-2027 Term or Semester All ... media. Assist with programming and events. Required Qualifications Little to minimal prior ...

Sr. Admin Assistant

City Of Industry, CA · On-site

$45K - $75K/yr

Provides coaching and mentoring to more junior administrative assistants to support them in developing capability to carry out current job accountabilities. * Manages and monitors calendars and ...

We are looking for an Administrator with experience working in skilled nursing The primary purpose ... issued by the governing board. Assist department directors in the development, use, and ...

Front Office Admin

Riverside, CA · On-site

$20 - $25/hr

Front Office Admin Join ServiceMaster Restore 10253 in Mission Viejo as a Front Office Admin, where ... Process invoices and assist with billing and payment collections. * Support the team with ...

Front Office Admin

Riverside, CA · On-site

$20 - $25/hr

Front Office Admin Join ServiceMaster Restore 10253 in Mission Viejo as a Front Office Admin, where ... Process invoices and assist with billing and payment collections. * Support the team with ...

CGP: Sr.Payroll Admin

Orange, CA · On-site

$35 - $38/hr

Senior Payroll Administrator Century Group is partnering with a client that is seeking a Senior Payroll Administrator to assist their team. Exact compensation may vary based on skills, experience ...

Transportation Admin

Ontario, CA · On-site

$24 - $26/hr

General information Name Transportation Admin Ref # 3565 City Ontario State California Country ... ESSENTIAL RESPONSIBILITIES: * Assist driver check-ins and maintain accurate transportation records ...

Front Office Admin

Riverside, CA · On-site

$20 - $25/hr

Join ServiceMaster Restore 10253 in Mission Viejo as a Front Office Admin, where you'll be the ... Process invoices and assist with billing and payment collections. * Support the team with ...

AIR ADMIN ASSISTANT III

Guasti, CA · On-site

$21.15 - $34.40/hr

UPS Job Opportunity Explore your next opportunity at a Fortune Global 500 organization. Envision innovative possibilities, experience our rewarding culture, and work with talented teams that help you ...

Showing results 21-40

Assistant Admin information

See Rialto, CA salary details

$11

$21

$31

How much do assistant admin jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for assistant admin in Rialto, CA is $21.10, according to ZipRecruiter salary data. Most workers in this role earn between $17.36 and $23.37 per hour, depending on experience, location, and employer.

What is an assistant admin?

Assistant Admins, also known as Administrative Assistants, are professionals who provide administrative support within an organization. Their responsibilities typically include managing schedules, organizing files, handling correspondence, and assisting with office operations to ensure everything runs smoothly. They often serve as a point of contact between management, staff, and external parties. Strong organizational, communication, and time management skills are essential for this role. Assistant Admins play a key part in maintaining efficient office workflows and supporting team productivity.

What are the key skills and qualifications needed to thrive as an assistant admin, and why are they important?

To thrive as an Assistant Admin, you need strong organizational skills, attention to detail, and proficiency in general office tasks, often supported by a high school diploma or associate degree. Familiarity with office software such as Microsoft Office Suite, scheduling systems, and document management tools is typically required. Excellent communication, time management, and problem-solving abilities help you stand out in this role. These skills are vital for ensuring smooth office operations, effective support to staff, and efficient workflow management.

What are the most common challenges faced by assistant admins in a busy office setting?

Assistant Admins often juggle multiple tasks simultaneously, such as managing schedules, handling correspondence, and supporting various team members. One common challenge is prioritizing urgent requests while maintaining accuracy and attention to detail. Working with different departments can also require strong communication skills and adaptability. Building effective time management strategies and staying organized are key to thriving in this dynamic environment.

What is the difference between Assistant Admin vs Office Coordinator?

AspectAssistant AdminOffice Coordinator
Required CredentialsHigh school diploma or equivalent; some roles may prefer administrative certificationsHigh school diploma; organizational or administrative certifications beneficial
Work EnvironmentOffice settings, supporting administrative tasksOffice environments, managing daily operations and coordination
Employer & Industry UsageCommon in various industries for administrative supportOften found in corporate, healthcare, and educational sectors for office management
Comparison FocusSupports administrative functions, often reporting to managersCoordinates office activities, ensuring smooth daily operations

The Assistant Admin primarily provides administrative support and handles routine tasks, while the Office Coordinator manages daily office operations and ensures effective workflow. Both roles are essential for office efficiency but differ in scope and responsibilities.

What are the top 3 skills of an assistant admin?

The top skills for an assistant admin include strong organizational and multitasking abilities, effective communication skills, and proficiency with office software such as Microsoft Office or Google Workspace. These skills enable efficient management of administrative tasks, coordination, and support within an office environment.

What exactly does an administrative assistant do?

An administrative assistant provides support to an organization by handling tasks such as managing schedules, answering phones, preparing documents, and organizing files. They often use office software like Microsoft Office and require strong organizational and communication skills to ensure smooth office operations.

What jobs do admin assistants do?

Admin assistants perform clerical tasks such as managing schedules, answering phones, organizing files, preparing documents, and supporting office operations. They often use office software like Microsoft Office and may handle tasks related to customer service, data entry, and coordinating meetings.

What are the most commonly searched types of Admin jobs in Rialto, CA?

The most popular types of Admin jobs in Rialto, CA are:

What cities near Rialto, CA are hiring for Assistant Admin jobs?

Cities near Rialto, CA with the most Assistant Admin job openings:

Infographic showing various Assistant Admin job openings in Rialto, CA as of August 2026, with employment types broken down into 1% As Needed, 79% Full Time, 17% Part Time, 1% Temporary, and 2% Contract. Highlights an 87% Physical, 1% Hybrid, and 12% Remote job distribution, with an average salary of $43,890 per year, or $21.1 per hour.

Sr. Admin Assistant

City Of Industry, CA

BMO Capital Markets
1 - 5K employees

$45K - $75K/yr

Full-time

Medical, Life, Retirement

Re-posted 4 days ago


Key responsibilities

  • Performs administrative and clerical tasks, including managing calendars, booking meetings, and arranging resources for meetings.

  • Supports the coordination and implementation of department events and manages departmental budgets and expenses.

  • Provides professional support to managers and senior staff, including communication, data analysis, and stakeholder relationship management.


Job description

Application Deadline:

09/10/2026

Address:

13300 Crossroads Parkway North

Job Family Group:

Business Management

Travel Requirement: This position offers remote option, however, monthly travel is required for Newport Beach and La Jolla, CA location

Performs a variety of administrative and clerical tasks, financial and human resources administration and provides professional support to one or more Managers and their direct reports. The role provides general offices services ensuring all administrative and operational processes and control standards are followed, while seeking to determine, develop, and participate in implementation of improvement opportunities, contributing to the effective and efficient operation of the business group.

  • Supports the execution of strategic initiatives; includes tracking metrics and milestones.
  • Builds effective relationships with internal/external stakeholders.
  • Analyzes data and information to provide insights and recommendations.
  • Leads the planning, coordinating and implementing department events.
  • Provides specialized and professional support to an executive and their senior managers within a large and diverse department or business group.
  • Coordinates and monitors budgets and reporting on results vs. budget.
  • Provides coaching and mentoring to more junior administrative assistants to support them in developing capability to carry out current job accountabilities.
  • Manages and monitors calendars and upcoming events. Dispatches meeting invitations, books meeting rooms and arranges for resources and other requirements in support of smooth and efficient meeting facilitation. Supports the coordination and implementation of department events.
  • Develops and maintains a filing system; ensures business and operational reports, forms, and other documentation, paper or electronic, are readily available.
  • Supports the development of tailored messaging, which may include writing, editing and distributing communications (e.g., correspondence, presentations, policies & procedures).
  • Dispatches outgoing communications. Answers central phone line, responding to and resolving/escalating inquiries.
  • Processes invoices for payment in adherence with documented processes and guidelines and vendor agreements
  • Prepares and logs departmental expense claims and reports. Tracks expenses to ensure they stay within budget.
  • Makes travel arrangements, booking flight/hotel reservations as needed.
  • Liaises with internal business units and external vendors and participates in the local coordination and implementation of premises and building related matters including incoming / outgoing staff and contractors, relocations, office planning and new furniture requirements while ensuring minimal interruptions to business operations.
  • Maintains supplies inventory by checking stock to determine inventory level; anticipating needed supplies; placing and expediting orders for supplies; verifying receipt of supplies.
  • Ensures all vacation and absence scheduling is documented, takes into account critical business needs, follows guidelines, and is managed consistently across employees in the group; identifies scheduling conflicts for resolution.
  • Coordinates training requirements for staff (research, booking, cancellations, confirmations, etc.).
  • Collaborates with internal and external stakeholders in order to deliver on business objectives.
  • Organizes work information to ensure accuracy and completeness.
  • Completes complex & diverse tasks within given rules/limits and may include handling escalations from other employees.
  • Analyzes issues and determines next steps.
  • Broader work or accountabilities may be assigned as needed.
  • Take measured risks while protecting the bank by applying our Risk Management Framework in the execution of your role, in line with our Risk Culture and within our approved Risk Appetite, making sound and risk informed decisions that align to business strategy, protect assets, and adhere to applicable policy documents (Frameworks, Policies, Standards, Procedures and Supporting documents), laws and regulations.

Qualifications:

  • Typically between 3-5 years of experience in an administrative/professional support function and post-secondary degree in related field of study desirable.
  • Specialized knowledge.
  • Verbal & written communication skills - Good.
  • Organization skills - Good.
  • Collaboration & team skills - Good.
  • Analytical and problem solving skills - Good.

Salary:

$45,900.00 - $75,900.00

Pay Type:

Salaried

The above represents BMO Financial Group's pay range and type.

Salaries will vary based on factors such as location, skills, experience, education, and qualifications for the role, and may include a commission structure. Salaries for part-time roles will be pro-rated based on number of hours regularly worked. For commission roles, the salary listed above represents BMO Financial Group's expected target for the first year in this position.

BMO Financial Group's total compensation package will vary based on the pay type of the position and may include performance-based incentives, discretionary bonuses, as well as other perks and rewards. BMO also offers health insurance, tuition reimbursement, accident and life insurance, and retirement savings plans. To view more details of our benefits, please visit:https://jobs.bmo.com/global/en/Total-Rewards

About Us

At BMO we are driven by a shared Purpose: Boldly Grow the Good in business and life. It calls on us to create lasting, positive change for our customers, our communities and our people. By working together, innovating and pushing boundaries, we transform lives and businesses, and power economic growth around the world.

As a member of the BMO team you are valued, respected and heard, and you have more ways to grow and make an impact. We strive to help you make an impact from day one - for yourself and our customers. We'll support you with the tools and resources you need to reach new milestones, as you help our customers reach theirs. From in-depth training and coaching, to manager support and network-building opportunities, we'll help you gain valuable experience, and broaden your skillset.

To find out more visit us at http://jobs.bmo.com/us/en

BMO is proud to be an equal employment opportunity employer. We evaluate applicants without regard to race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, transgender status, sexual stereotypes, age, status as a protected veteran, status as an individual with a disability, or any other legally protected characteristics. We also consider applicants with criminal histories, consistent with applicable federal, state and local law.

BMO is committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process, please send an e-mail to BMOCareers.Support@bmo.com and let us know the nature of your request and your contact information.

Note to Recruiters: BMO does not accept unsolicited resumes from any source other than directly from a candidate. Any unsolicited resumes sent to BMO, directly or indirectly, will be considered BMO property. BMO will not pay a fee for any placement resulting from the receipt of an unsolicited resume. A recruiting agency must first have a valid, written and fully executed agency agreement contract for service to submit resumes.