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Assistant Office Administrator Jobs in Riverside, CA

MODE

Office Administrator

Irvine, CA

$19.25 - $26.50/hr

Office Administrator We are looking for a reliable, paid full-time Office Administrator. They will ... Submit timely reports and prepare presentations/proposals as assigned * Assist colleagues whenever ...

New

EV Mode

Office Administrator

Irvine, CA · On-site

Salary: $20 - $24/hr DOE Office Administrator We are looking for a reliable, paid full-time Office ... Submit timely reports and prepare presentations/proposals as assigned * Assist colleagues whenever ...

EV Mode

Office Administrator

Irvine, CA · On-site

$20 - $24/hr

Office Administrator We are looking for a reliable, paid full-time Office Administrator. They will ... Submit timely reports and prepare presentations/proposals as assigned * Assist colleagues whenever ...

STELLAR TRAILERS CORP

Office Administrator

Ontario, CA · On-site

$18 - $25/hr

Stellar Trailers 1200 w mission blvd, Ontario Ca 91762 We are seeking an Office Administrator to ... Greet and assist onsite guests * Answer inbound telephone calls * Develop and implement organized ...

STELLAR TRAILERS CORP

Office Administrator

Ontario, CA · On-site

$18 - $25/hr

Stellar Trailers 1200 w mission blvd, Ontario Ca 91762 We are seeking an Office Administrator to ... Greet and assist onsite guests * Answer inbound telephone calls * Develop and implement organized ...

Russian School of Mathematics

Office Administrator

Irvine, CA · On-site

$19.25 - $26.50/hr

RSM is looking to hire an Office Administrator in our Irvine, CA location. The school operates from ... The incumbent will perform a wide range of administrative and general office duties and assist in ...

The Russian School of Math

Office Administrator

Irvine, CA · On-site

$19.25 - $26.50/hr

RSM is looking to hire an Office Administrator in our Irvine, CA location. The school operates from ... The incumbent will perform a wide range of administrative and general office duties and assist in ...

TrustedTech

Office Administrator

Irvine, CA · On-site

$19.25 - $26.50/hr

TrustedTech is seeking a polished, highly organized, and people-oriented Office Administrator to ... the appropriate teams. * Assist with internal HR communications, including distributing ...

Trusted Tech Inc

Office Administrator

Irvine, CA · On-site

$19.25 - $26.50/hr

TrustedTech is seeking a polished, highly organized, and people-oriented Office Administrator to ... the appropriate teams. * Assist with internal HR communications, including distributing ...

gnc

Administration - Office Administrator

Fontana, CA

$27 - $29/hr

We are currently looking for a full-time Office Administrator at our Fontana, CA facility area ... Greet and assist visitors, vendors, and walk-in customers, ensuring we have proper documentation ...

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All JobsOffice Administrator JobsAssistant Office Administrator JobsAssistant Office Administrator Jobs in Riverside, CA

Assistant Office Administrator information

See Riverside, CA salary details

$27.1K

$71.2K

$142.4K

How much do assistant office administrator jobs pay per year?

As of Aug 8, 2026, the average yearly pay for assistant office administrator in Riverside, CA is $71,166.00, according to ZipRecruiter salary data. Most workers in this role earn between $46,900.00 and $84,000.00 per year, depending on experience, location, and employer.

What does an assistant office administrator do?

An assistant office administrator supports daily office operations by handling administrative tasks such as scheduling, correspondence, data entry, and filing. They often use office software like Microsoft Office and coordinate with team members to ensure smooth workflow and organization.

What are the key skills and qualifications needed to thrive as an assistant office administrator?

To thrive as an Assistant Office Administrator, you need strong organizational skills, attention to detail, and proficiency in office procedures, often supported by a high school diploma or associate degree. Familiarity with office software such as Microsoft Office Suite, scheduling tools, and basic bookkeeping systems is typically required. Excellent communication, time management, and problem-solving abilities help you stand out in this role. These skills and qualities are crucial for ensuring smooth office operations, supporting team productivity, and providing effective administrative support.

What are some common challenges faced by assistant office administrators, and how can they be successfully managed?

Assistant Office Administrators often juggle multiple tasks such as scheduling, managing correspondence, and supporting various team members, which can lead to conflicting priorities and tight deadlines. Successfully managing these challenges requires strong organizational skills, the ability to communicate clearly, and proficiency with office technology. Setting clear priorities, proactively communicating with colleagues about workload, and staying adaptable to sudden changes can help ensure day-to-day operations run smoothly.

What is an assistant office administrator?

Assistant Office Administrators provide support in managing the daily operations of an office. Their duties often include handling correspondence, organizing files, scheduling appointments, ordering supplies, and assisting with basic bookkeeping tasks. They help ensure that the office runs smoothly by supporting management and staff with administrative tasks. This role requires strong organizational, communication, and multitasking skills.

What is the difference between Assistant Office Administrator vs Office Coordinator?

AspectAssistant Office AdministratorOffice Coordinator
Primary RoleSupports administrative tasks, manages office operations, assists with communicationCoordinates office activities, manages schedules, handles logistics
Required SkillsAdministrative skills, communication, organizationOrganizational skills, multitasking, communication
Work EnvironmentOffice setting, administrative supportOffice setting, event planning, logistics
Common UsageUsed in various industries for administrative support rolesUsed in corporate and organizational settings for managing office functions

The Assistant Office Administrator and Office Coordinator roles share similarities in supporting office functions and requiring organizational skills. However, the Assistant Office Administrator typically provides broader administrative support, while the Office Coordinator focuses more on coordinating activities and logistics. Both roles are essential for smooth office operations and are often found in similar work environments.

What are the most commonly searched types of Office Administrator jobs in Riverside, CA? The most popular types of Office Administrator jobs in Riverside, CA are:
What are popular job titles related to Assistant Office Administrator jobs in Riverside, CA? For Assistant Office Administrator jobs in Riverside, CA, the most frequently searched job titles are:
What job categories do people searching Assistant Office Administrator jobs in Riverside, CA look for? The top searched job categories for Assistant Office Administrator jobs in Riverside, CA are:
What cities near Riverside, CA are hiring for Assistant Office Administrator jobs? Cities near Riverside, CA with the most Assistant Office Administrator job openings:
Assistant Office Administrator jobs near you
Infographic showing various Assistant Office Administrator job openings in Riverside, CA as of August 2026, with employment types broken down into 1% As Needed, 85% Full Time, 11% Part Time, 1% Temporary, and 2% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $71,166 per year, or $34.2 per hour.

Part Time Office Administrator

Midatlantic Employers' Association

Irvine, CA

$24 - $28/hr

Part-time

Re-posted 15 days ago

Job description

Part-Time Front Desk / Office Administrator

In-Office | Irvine, CA | Up to 20 Hours per Week

Join Our Team

At Steelforce America, we believe We Succeed as One. As part of the global Steelforce organization, we combine international strength with local expertise to serve customers across North America. Our culture is built on collaboration, transparency, accountability, and teamwork—and we're looking for someone who shares those values.

We're seeking a friendly, organized, and proactive Part-Time Front Desk / Office Administrator to be the welcoming face of our Irvine office while supporting daily administrative and office operations. If you enjoy creating a positive workplace experience and thrive in a fast-paced environment, we'd love to hear from you.

What You'll Do

Front Desk & Office Operations

  • Welcome visitors, clients, and vendors with professionalism and exceptional customer service
  • Answer and direct incoming calls and respond to general inquiries
  • Receive, sort, and distribute mail and packages
  • Maintain an organized, professional, and welcoming office environment
  • Order and manage office supplies, kitchen supplies, and office inventory
  • Coordinate lunch orders and office catering for meetings and events

Administrative & Executive Support

  • Manage calendars and schedule meetings for leadership team members
  • Coordinate domestic and international travel arrangements, including flights, hotels, and itineraries
  • Assist with meeting preparation, logistics, and follow-up
  • Support management with various administrative projects and tasks

Office & Client Coordination

  • Schedule conference rooms and ensure meeting spaces are prepared and presentable
  • Coordinate with vendors, service providers, and delivery partners
  • Assist with client meetings and help ensure a positive visitor experience from arrival to departure
  • Support smooth day-to-day office operations and workplace organization

What We're Looking For

  • Previous experience in a front desk, administrative assistant, office coordinator, or similar role
  • Strong organizational skills and the ability to manage multiple priorities simultaneously
  • Excellent written and verbal communication skills
  • Professional, personable, and customer-service oriented
  • Ability to maintain confidentiality and handle sensitive information with discretion
  • Proficiency with Microsoft Office applications and calendar management tools
  • Experience working in a client-facing or fast-paced office environment preferred
  • Availability to work approximately 4 hours per day, Monday through Friday