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20 results for Senior Administrative Assistant in Riverside, CA

Sr. Administrative Assistant

Newport Beach, CA
onsite
Temporary to Hire
34.0385 - 43 USD / Hourly
We are looking for a highly organized Sr. Administrative Assistant to support leadership and client-facing operations in California. This contract position offers a path to a permanent role and is ideal for someone who thrives in a fast-paced banking environment and can balance executive support, client coordination, and follow-through on critical activities. The person in this role will help keep priorities moving, maintain strong communication across teams, and contribute to a high standard of service for both internal and external stakeholders. Responsibilities: • Coordinate calendars, internal meetings, and conference calls for leadership while capturing key discussion points and monitoring follow-up actions. • Support client and prospect interactions by preparing materials, attending meetings when needed, and ensuring next steps are documented and completed. • Organize, review, print, and route loan-related documentation, including tracking signature status and maintaining accurate records. • Gather required information for deposit and lending processes and assist with account-related and operational banking activities. • Perform wire callback support and respond to complex client issues with professionalism, urgency, and sound judgment. • Maintain a structured system for action items, project updates, and service requests so deadlines and client expectations are consistently met. • Travel locally to branch locations, client offices, or residences to deliver or retrieve signed documents and provide administrative support tied to banking transactions. • Contribute to outreach efforts, special assignments, and service initiatives that enhance client experience, team effectiveness, and brand presence. • Follow banking policies and compliance procedures, including proper escalation of unusual activity and adherence to regulatory standards.
2026-05-06T00:00:00Z

Sr. Administrative Assistant

Costa Mesa, CA
onsite
Temporary / Contract
25.3365 - 29.337 USD / Hourly
We are looking for a highly organized Sr. Administrative Assistant to support senior leadership and business development operations in Costa Mesa, California. This Contract position is ideal for an experienced, detail-oriented candidate who can manage executive priorities, coordinate complex logistics, and produce high-quality business materials in a fast-paced environment. The role calls for strong judgment, excellent communication, and the ability to keep multiple projects moving while maintaining accuracy and consistency. Responsibilities: • Support the President, Vice Presidents, and Business Development team with high-level administrative coordination and day-to-day operational assistance. • Create and refine presentations, business proposals, reports, and other business documents for leadership review and external use. • Track open tasks, deadlines, and follow-up items to help ensure commitments are completed accurately and on schedule. • Monitor incoming deliverables from internal teams and external partners, confirming they meet timing, quality, and content expectations. • Serve as a point of coordination for vendors, suppliers, and third-party partners, helping manage communication and next steps. • Organize tradeshows, meetings, and special events by handling logistics, travel planning, printed materials, and promotional support. • Maintain executive calendars and meeting schedules, balancing priorities and improving efficiency for senior leadership. • Arrange detailed domestic and international travel, including itineraries, accommodations, and meeting coordination. • Contribute to cross-functional initiatives, office operations, conference call coordination, and special projects as business needs evolve.
2026-05-07T00:00:00Z

Administrative Assistant

Azusa, CA
onsite
Temporary to Hire
20 - 20 USD / Hourly
We are looking for an Administrative Assistant to support daily office operations for a non-profit organization in California. This contract opportunity is ideal for someone who enjoys balancing communication, scheduling, and administrative coordination in a service-focused environment. The role calls for a dependable individual who can manage multiple priorities, maintain accurate records, and provide responsive support to internal teams and external contacts. Responsibilities: • Manage incoming phone calls and emails, providing timely assistance and directing inquiries to the appropriate departments. • Coordinate calendars, arrange appointments, and help keep schedules organized for staff and visitors. • Enter, update, and maintain records with accuracy while ensuring administrative documents remain well organized. • Prepare routine correspondence, reports, and presentation materials using Microsoft Office applications. • Support front-office activities by assisting with general customer service and handling both inbound and outbound communications. • Monitor administrative workflows and help maintain efficient day-to-day office operations. • Assist with spreadsheet tracking, document formatting, and data management to support team needs. • Contribute to special projects and process-related administrative tasks as assigned.
2026-05-05T00:00:00Z

Administrative Assistant

Los Angeles, CA
onsite
Temporary / Contract
24.7 - 26 USD / Hourly
We are looking for a Bilingual Administrative Assistant to support daily service operations and keep scheduling, communication, and documentation running smoothly in Los Angeles, California. This Long-term Contract position is ideal for someone who thrives in a fast-paced office setting and can balance customer contact, technician coordination, and detailed administrative work. The role will play a key part in maintaining organized workflows, timely job processing, and accurate reporting across service-related activities. Responsibilities:• Coordinate service appointments and inspection visits, assigning technicians in a way that supports efficient daily coverage and productivity.• Prepare and manage work orders, communicate progress updates to customers, and follow through with field staff on open items.• Review completed jobs for accuracy, verify that required notes are entered, and help close outstanding service records promptly.• Process contract and quality control documentation while ensuring forms are complete and submitted within required timelines.• Arrange subcontractor scheduling and support broader activity planning involving customer communication and equipment readiness.• Maintain organized calendars and service schedules, working closely with the sales team to secure timely job placement.• Purchase needed materials and equipment, receive incoming items, and distribute supplies to technicians as required.• Produce daily operational reports, support billing for completed service and inspection work, and assist with inventory tracking.• Serve as a central point of coordination among sales staff, project teams, and technicians to keep information accurate and aligned.
2026-05-07T00:00:00Z

Administrative Assistant

Pasadena, CA
onsite
Temporary / Contract
25 - 30 USD / Hourly
We're working with a busy engineering company in Pasadena who are looking for an Administrative Assistant to join their team on a contract to hire basis. You'll be responsible for assisting with scheduling and calendar management, expense reports, travel arrangements, creating presentations and project coordination.
2026-04-27T00:00:00Z

Administrative Assistant

Orange, CA
onsite
Temporary to Hire
26.6 - 30.8 USD / Hourly
We are looking for a highly organized and detail-oriented Administrative Assistant to join our team on a contract-to-permanent basis in Orange, California. In this role, you will provide critical support to the Inside Sales team by managing sales reports, processing orders and quotes, and ensuring seamless communication between customers and internal departments. This position requires a proactive individual capable of handling multiple priorities independently while maintaining accuracy and efficiency. Responsibilities: • Prepare and maintain daily, weekly, and monthly sales reports, including bookings, shipments, and forecasts. • Track and follow up on pending quotes, prepaid orders, and open order statuses to ensure timely completion. • Assist in entering and processing sales orders and quotes, ensuring accuracy and compliance. • Organize and maintain records of sales orders, invoices, and quality documentation for easy access and compliance. • Distribute shipment tracking information and required documentation to customers in a timely manner. • Coordinate customer visits, meetings, and internal team communications to support smooth operations. • Provide backup administrative support during peak workloads and assist with special projects as needed. • Support the development and maintenance of standard operating procedures (SOPs) to improve workflow efficiency. • Assist with trade show coordination, marketing activities, and other departmental initiatives. • Manage office supplies and provide general administrative assistance to the team.
2026-05-06T00:00:00Z

Administrative Assistant

Arcadia, CA
onsite
Temporary / Contract
25 - 26 USD / Hourly
We currently have ongoing positions for a results-oriented Administrative Assistants who are deeply passionate about growing their career. In this role, you will perform various administrative and office support duties. Do you love mail merging, pivot tables and presentation design? Then we have a position for you. · Answer phones and greet visitors· Schedule appointments and maintain calendars· Schedule and coordinate staff and other meetings· Collate and distribute mail· Prepare communications, such as memos, emails, invoices, reports and other correspondence· Write and edit documents from letters to reports and instructional documents· Create and maintain filing systems, both electronic and physical If you are a self-starter who is passionate about supporting a dynamic and growing company and looking to thrive in a creative environment, we would love to hear from you! Contact us now
2026-05-06T00:00:00Z

Administrative Assistant

Pasadena, CA
onsite
Temporary / Contract
25 - 26 USD / Hourly
We currently have ongoing positions for a results-oriented Administrative Assistants who are deeply passionate about growing their career. In this role, you will perform various administrative and office support duties. Do you love mail merging, pivot tables and presentation design? Then we have a position for you. · Answer phones and greet visitors· Schedule appointments and maintain calendars· Schedule and coordinate staff and other meetings· Collate and distribute mail· Prepare communications, such as memos, emails, invoices, reports and other correspondence· Write and edit documents from letters to reports and instructional documents· Create and maintain filing systems, both electronic and physical If you are a self-starter who is passionate about supporting a dynamic and growing company and looking to thrive in a creative environment, we would love to hear from you! Contact us now
2026-05-06T00:00:00Z

Administrative Assistant

Whittier, CA
onsite
Temporary / Contract
30 - 33 USD / Hourly
We are looking for a highly organized Administrative Assistant to support daily office operations in City of Industry, California. This Long-term Contract position is ideal for someone who excels at coordinating schedules, managing documentation, and providing responsive support across administrative and finance-related tasks. The role requires strong attention to detail, sound judgment, and the ability to handle multiple priorities in an onsite environment. Responsibilities: • Coordinate calendars, meetings, and travel arrangements while ensuring schedules remain accurate and up to date. • Respond to inbound calls and general inquiries professionally, directing requests to the appropriate teams and maintaining a high level of customer service. • Prepare, organize, and maintain records, files, and documentation to support administrative, hiring, and operational activities. • Assist with invoice review, payment processing, purchase order handling, and expense tracking in partnership with finance and vendors. • Support timekeeping activities by reviewing time sheets and helping maintain accurate administrative records. • Distribute incoming communications such as faxes and other office correspondence, ensuring timely delivery and follow-up. • Contribute to onboarding and training coordination by scheduling sessions, preparing materials, and supporting related administrative processes. • Help improve office workflows by identifying process efficiencies and assisting with the creation of dashboards and reporting tools.
2026-05-06T00:00:00Z

Administrative Assistant

Santa Ana, CA
onsite
Temporary to Hire
30.0865 - 34.837 USD / Hourly
We are looking for an organized Administrative Assistant to support a growing team in California. This contract opportunity with permanent potential is ideal for someone who enjoys keeping office operations running smoothly while managing contract-related paperwork and day-to-day administrative tasks. The role is fully onsite and offers the chance to work in a collaborative office environment with flexibility in scheduling. Responsibilities: • Coordinate and maintain contract documentation, ensuring records are accurate, current, and easy to retrieve. • Prepare, review, and process change orders and purchase orders to support active projects and office operations. • Provide front office support by answering incoming calls, directing inquiries, and greeting visitors professionally. • Enter and update information in internal systems and spreadsheets with strong attention to detail. • Assist with general administrative activities such as filing, scheduling, document preparation, and correspondence. • Support project and office teams by tracking paperwork deadlines and following up on outstanding items. • Work with tools such as AutoQuotes, Bluebeam, and Adobe for document handling and project-related administrative tasks, with training available as needed.
2026-05-07T00:00:00Z

Executive Assistant

Tustin, CA
onsite
Temporary / Contract
30.875 - 35.75 USD / Hourly
We are looking for an experienced Executive Assistant to provide dedicated support to senior leadership in a fully remote environment. This Long-term Contract position is based in Tustin, California, and requires an experienced, detail-oriented individual who can manage competing priorities while partnering with executives across multiple U.S. time zones, with strongest alignment to Mountain Time availability preferred. The ideal candidate brings previous experience supporting C-suite leaders and is confident handling sensitive matters, complex scheduling, and high-level coordination with discretion and accuracy. Responsibilities: • Provide comprehensive administrative and operational support to executive leaders, ensuring day-to-day activities run smoothly and efficiently. • Oversee complex calendars across multiple time zones, arranging meetings, appointments, and leadership commitments with careful attention to priority and timing. • Coordinate business travel from start to finish, including itineraries, reservations, and related logistics for executive schedules. • Develop meeting materials such as agendas, presentations, and reports to help leaders prepare for internal and external discussions. • Monitor key deadlines, action items, and shifting priorities, following up proactively to keep leadership initiatives on track. • Manage sensitive communications and correspondence with a high level of judgment and confidentiality. • Organize virtual and in-person meetings by handling scheduling details, room coordination, and technology readiness. • Assist with the compilation and formatting of executive documents and leadership-facing materials as needed.
2026-05-08T00:00:00Z

Executive Assistant

Pasadena, CA
onsite
Temporary / Contract
27 - 30 USD / Hourly
Robert Half has upcoming opportunities for experienced Executive Assistants. The executive assistant will report directly to and support director level, vice-presidents, and C-level executives. Apply today for immediate consideration. Responsibilities may include:· Providing administrative assistance, such as writing and editing e-mails, drafting memos, and preparing communications on the executive’s behalf· Maintaining comprehensive and accurate records · Performing minor accounting duties · Organizing meetings, including scheduling, sending reminders, and organizing catering when necessary· Answering phone calls in a polite and professional manner· Welcoming visitors and identifying the purpose of their visit before directing them to the appropriate department· Managing the executive’s calendar, including making appointments and prioritizing the most sensitive matters
2026-05-06T00:00:00Z

Executive Assistant

Pasadena, CA
onsite
Temporary to Hire
27.7115 - 33 USD / Hourly
We are looking for an organized and proactive Executive Assistant to support senior leadership within an engineering-focused environment in Pasadena, California. This contract opportunity with permanent potential is ideal for someone who excels at managing complex schedules, coordinating logistics, and keeping executive priorities on track. The right candidate will bring strong judgment, professionalism, and the ability to handle shifting demands with confidence. Responsibilities: • Oversee executive calendars by scheduling appointments, resolving conflicts, and ensuring leaders are prepared for upcoming commitments. • Arrange domestic and international travel plans, including flights, lodging, ground transportation, and detailed itineraries. • Coordinate meeting logistics for executive sessions, including reserving space, confirming attendance, and distributing relevant materials. • Serve as a central point of support for day-to-day administrative needs, helping executives stay organized and focused on key business objectives. • Monitor schedule changes and travel updates, making quick adjustments to maintain efficiency and minimize disruptions. • Prepare and organize information needed for meetings, travel, and leadership activities to support smooth daily operations.
2026-04-22T00:00:00Z

Office Assistant

Monrovia, CA
onsite
Temporary / Contract
19 - 20 USD / Hourly
We have local ongoing opportunities for Office Assistants / Administrative Assistants. Are you a self-starter who loves handling multiple projects at once with a positive outlook? Then we have a position for you. Please apply today for immediate consideration. How you will make an impact· Filing, copying and faxing for multiple departments· Maintain office facility· Route calls appropriately· Data entry If you have a winning team attitude approach and you are eager to grow your career to the next level, we want to hear from you! This position is perfect for you if you love thriving in a dynamic environment. Contact us now!
2026-05-06T00:00:00Z

Human Resources Administrator

Long Beach, CA
onsite
Temporary / Contract
32.68 - 37.84 USD / Hourly
We are looking for an experienced Human Resources Administrator to join our team in Long Beach, California. In this long-term contract role, you will play a pivotal part in supporting HR functions, ensuring compliance with legal standards, and contributing to talent acquisition and onboarding processes. This position is ideal for someone who is detail-oriented and has a strong background in HR administration and legal documentation. Responsibilities:• Manage legal forms and ensure compliance with company policies and state regulations.• Conduct thorough background checks for candidates and employees, ensuring accuracy and confidentiality.• Oversee HR administrative tasks, including record-keeping and correspondence.GreenhouseWorkday• Prepare and handle legal correspondence in alignment with organizational standards.• Support benefit functions by coordinating enrollment processes and addressing employee inquiries.• Facilitate onboarding processes to ensure new hires have a seamless transition into the company.• Assist in talent sourcing and acquisition efforts to attract and retain skilled individuals.• Collaborate with multiple vendors to maintain efficient HR operations and services.• Maintain up-to-date knowledge of HR practices and legal requirements to support organizational goals.
2026-05-08T00:00:00Z

Human Resources Administrator

Irvine, CA
onsite
Temporary to Hire
31.35 - 36.3 USD / Hourly
We are looking for a Human Resources Administrator to join our team in Irvine, California in a contract-to-permanent capacity. This role supports core HR operations with a strong emphasis on benefits administration, employee support, and compliance-focused processes. The ideal candidate brings hands-on experience managing benefit programs, coordinating onboarding activities, and maintaining accurate HR records in a fast-paced environment. Responsibilities: • Manage day-to-day administration of employee benefit offerings, including health, dental, vision, life, disability, and retirement programs. • Coordinate new enrollments, status updates related to life events, employee separations, and annual open enrollment activities while ensuring accuracy and timeliness. • Maintain reliable benefits records in HR systems and review carrier billing to resolve discrepancies and support accurate reconciliations. • Work closely with insurance providers, brokers, and external administrators to support smooth delivery of benefit services and issue resolution. • Monitor adherence to applicable federal and state employment and benefits regulations and help maintain compliant HR practices and documentation. • Administer leave and disability cases by tracking requests, communicating with employees, and supporting required documentation. • Assist with payroll-related benefits activity, including deduction review, audits, and reporting tied to employee elections. • Lead benefits orientation sessions and prepare employee-facing materials that explain programs, enrollment steps, and available resources. • Support HR administration tasks such as onboarding coordination, background checks, and I-9 compliance activities as needed.
2026-05-08T00:00:00Z

Accounting Assistant

Cerritos, CA
onsite
Temporary to Hire
22 - 23 USD / Hourly
We are looking for an Accounting Assistant to support day-to-day administrative and accounting operations of our client's corporate office in Cerritos, California. This opportunity is ideal for someone who enjoys keeping financial records organized, handling office support tasks, and assisting a busy accounting team with accuracy and efficiency. The role combines clerical coordination, document management, deposit preparation, and accounts payable support in an organized office environment. Responsibilities:• Manage incoming and outgoing mail by collecting, sorting, opening, and distributing correspondence throughout the office.• Review received checks, identify the appropriate entity, and document the information accurately for processing and tracking.• Prepare and organize bank deposits for remote deposit capture and enter related deposit details into internal spreadsheets.• Coordinate shipping activity, including arranging and tracking FedEx packages as needed.• Scan accounting and administrative documents, confirm image quality, and ensure complete records are captured.• Provide support to the accounts payable function through invoice copying, scanning, filing, and expense report documentation.• Create and format letters, reports, and other written materials requested by accounting leadership and office staff.• Maintain orderly department files, archive year-end accounting records for storage, and assist with additional administrative projects as assigned.
2026-05-08T00:00:00Z

Accounting Assistant

Riverside, CA
onsite
Temporary / Contract
19.7885 - 25 USD / Hourly
We are looking for an Accounting Assistant to support both financial operations and administrative coordination for a mission-driven organization in Moreno Valley, California. This Long-term Contract position is ideal for someone who is comfortable balancing daily accounting tasks with hands-on office support in a fast-paced, service-oriented environment. The role offers the opportunity to contribute to accounts payable, accounts receivable, reporting support, and general administrative needs while working with teams that serve vulnerable populations. Responsibilities:• Process outgoing payments accurately, including invoice review, coding, and check handling for accounts payable activities.• Record incoming funds and maintain accounts receivable activity with a strong focus on high-volume transactions tied to grants, housing, and assistance programs.• Reconcile financial records and support routine balancing tasks to help maintain accurate accounting data.• Assist with gathering, organizing, and preparing information needed for internal reports and operational tracking.• Provide day-to-day administrative support to department leadership and respond to shifting team priorities as needed.• Maintain financial documentation and related records in an orderly manner to support compliance and audit readiness.• Use QuickBooks Online to enter, update, and monitor accounting information across assigned workflows.• Support cross-functional tasks and special projects that help keep office and finance operations running smoothly.
2026-05-05T00:00:00Z

Accounting Assistant

Monrovia, CA
onsite
Temporary / Contract
20 - 22 USD / Hourly
Robert Half is searching for entry-level Accounting Assistants for ongoing opportunities. The Accounting Assistants' duties will include: data entry, matching invoices to purchase orders or vouchers, and assisting with the processing of accounts payable and accounts receivable. If this sounds like you, please apply today!Bookkeeping:· Assist in maintaining accurate and up-to-date financial records.· Record daily transactions, including accounts payable and accounts receivable entries.Invoice Processing:· Process and verify invoices from vendors.· Ensure proper coding and documentation before submitting invoices for approval.Expense Reconciliation:· Reconcile credit card statements and receipts.· Verify and reconcile employee expense reports with receipts and company policies.Data Entry:· Enter financial data into accounting software or spreadsheets.· Maintain organized and well-documented records for easy retrieval.Assist with Financial Reporting:· Support the preparation of financial reports, including income statements and balance sheets.· Provide necessary information and documentation for financial audits.
2026-05-06T00:00:00Z

Communication Assistant

Santa Ana, CA
onsite
Temporary / Contract
19.7885 - 22.913 USD / Hourly
We are looking for a Communication Assistant to join our team in Santa Ana, California on a Contract basis. This position supports day-to-day communication initiatives by helping maintain digital content, coordinate outreach efforts, and keep projects organized. The ideal candidate is comfortable balancing administrative tasks with creative support, while contributing to events, social media activity, and branded communication materials. Responsibilities: • Update website pages and perform routine content maintenance to keep information accurate and current. • Prepare, revise, and organize forms and documents in Microsoft Word to support communication-related requests. • Coordinate incoming communication needs from internal teams and external partners, ensuring timely follow-up and clear organization. • Assist with outreach events by gathering materials, supporting onsite setup and teardown, and confirming all items are ready in advance. • Manage vendor-related orders for promotional merchandise, printed pieces, and other communication materials while tracking delivery timelines. • Provide scheduling and administrative assistance by organizing calendars, arranging meetings, and helping maintain project timelines. • Draft basic written content for social media and other communication channels, and create simple graphics that follow brand guidelines. • Monitor engagement across digital platforms and compile straightforward performance insights to support communication planning. • Capture photos and videos during events for use in social media, website content, and internal communication pieces.
2026-05-07T00:00:00Z