Results for Office Assistant Jobs in Modesto, CA

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Office Manager

Livermore, CA
onsite
Temporary to Hire
30 - 35 USD / Hourly
Robert Half's construction client is looking for an organized and proactive Office Manager to support daily business operations in Livermore, CA. This contract-to-permanent position is ideal for someone who can balance office coordination, administrative support, and human resources tasks in a fast-paced construction environment. The right candidate will help keep internal processes efficient, maintain accurate employee records, lead onboarding training, and contribute to a well-organized and well-run workplace. Office Manager Responsibilities:• Lead the coordination of new employee onboarding, including orientation scheduling and preparation of employment materials.• Maintain personnel records and related documentation with a high level of accuracy, discretion, and organization.• Assist with employment updates such as status changes, separations, benefits support, and other HR-related paperwork.• Provide day-to-day administrative support by organizing meetings, managing calendars, and handling internal office communication.• Create and update business documents such as reports, spreadsheets, presentations, and written correspondence.• Support filing, data entry, record retention, and general document management for office and project teams.• Monitor office supply levels, place orders as needed, and help manage equipment and shared workspace organization.• Coordinate with outside vendors and service providers to support smooth office operations.• Assist with compliance-related tracking, including training records, certifications, workers’ compensation documentation, and employment forms. If you are interested in this Office Manager position, please submit your resume today!
2026-10-23T00:00:00Z

Administrative Assistant

Lathrop, CA
onsite
Temporary / Contract
20.9 - 24.2 USD / Hourly
We are looking for an organized Administrative Assistant to support daily office operations for a non-profit organization in Lathrop, California. This Long-term Contract opportunity is ideal for someone who can manage administrative workflows, maintain accurate records, and provide detail-oriented front-desk support. The role requires strong attention to detail, clear communication, and the ability to handle multiple tasks in a busy office environment. Schedule: Monday–Friday, 8 AM–5 PM Assignment: permanent Contract, 3–6 Months Seeking an organized and dependable Administrative Assistant to support a busy Public Works Department. Responsibilities: Process purchase orders and invoices Order supplies and maintain office inventory Answer and route incoming calls Assist customers and respond to vendor inquiries Provide general administrative and clerical support
2026-10-21T00:00:00Z

Accounting Clerk

Pleasanton, CA
onsite
Permanent / Full Time
25.5 - 30.5 USD / Hourly
Launch your accounting career with Robert Half’s Full-Time Engagement Professionals (FTEP) program as an Accounting Clerk! Gain hands-on experience across AP/AR, billing, collections, and general accounting while supporting diverse client projects. Ideal candidates have intermediate Excel skills, strong attention to detail, and a degree in accounting, finance, or a related field. For more information, please contact Tawnia Kirshen via LinkedIn and send your resume to my email found there. Key Responsibilities<ul><li>Support AP, AR, billing, collections, and daily accounting operations.</li><li>Process invoices, post payments, and maintain vendor and customer accounts.</li><li>Generate invoices, review aging reports, and follow up on past-due balances.</li><li>Reconcile accounts, research discrepancies, and maintain accurate records.</li><li>Perform high-volume data entry with accuracy and efficiency.</li><li>Assist with cash application, payment tracking, and account updates.</li><li>Respond to vendor, customer, and internal inquiries professionally.</li><li>Maintain documentation, support month-end close, and use Excel for reporting and analysis.</li><li>Adapt quickly to new client systems and processes while providing quality support.</li></ul>
2026-10-15T00:00:00Z

Accounting Clerk

Livermore, CA
onsite
Permanent / Full Time
24.5 - 28.5 USD / Hourly
Launch your accounting career with Robert Half’s Full-Time Engagement Professionals (FTEP) program! As an Accounting Clerk, gain hands-on experience across accounts payable, receivable, billing, collections, and general accounting while supporting diverse client engagements. Enjoy full-time stability, professional growth, and exposure to leading organizations. Candidates should have intermediate Excel skills, strong attention to detail, and a degree in accounting, finance, or a related field. For more information, please contact Tawnia Kirshen via LinkedIn and send your resume to my email found there. Key Responsibilities<ul><li>Support day-to-day accounting operations across accounts payable, accounts receivable, billing, and collections.</li><li>Process invoices, post payments, and assist with vendor and customer account maintenance.</li><li>Generate and distribute invoices, monitor aging reports, and follow up on outstanding balances.</li><li>Reconcile account activity and research discrepancies to support accurate financial records.</li><li>Perform high-volume data entry with speed and accuracy.</li><li>Assist with cash application, payment tracking, and account updates.</li><li>Respond to vendor, customer, and internal inquiries in a timely and professional manner.</li><li>Maintain organized accounting documentation and support month-end close activities as needed.</li><li>Use Excel to prepare reports, track account activity, and support data review and analysis.</li><li>Adapt quickly to new client systems, workflows, and processes while delivering high-quality support.</li></ul>
2026-10-15T00:00:00Z

Accounting Clerk

Patterson, CA
onsite
Temporary / Contract
22 - 24 USD / Hourly
We are looking for an Accounting Clerk to join a non-profit organization in Patterson, California on a Contract basis. This position supports daily accounting operations through customer-facing payment processing, administrative assistance, and spreadsheet-based financial support. The ideal candidate brings strong accuracy, professionalism, and the ability to manage both clerical and accounting-related tasks in a fast-paced office environment. Responsibilities:• Support utility-related accounting activities by helping maintain records and assist with department workload.• Respond to incoming phone calls and provide courteous customer service to address questions and direct inquiries appropriately.• Accept customer payments and ensure transactions are accurately posted to the correct accounts.• Assist team members with preparing and updating financial workpapers and related documentation.• Use Microsoft Excel to help organize, review, and maintain accounting spreadsheets and supporting data.• Perform data entry for accounting records with close attention to detail and accuracy.• Provide general administrative and accounting support to staff as business needs arise. For immediate consideration contact Robert Half at 209-232-1991.
2026-10-23T00:00:00Z

5 results for Office Assistant in Modesto, CA