17 Results for Office Administrative Assistant Jobs in Manteca, CA

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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
2026-10-12T00:00:00Z

Administrative Assistant

San Ramon, CA
onsite
Temporary / Contract
30 - 40 USD / Hourly
We are looking for an Administrative Assistant to support daily office operations for a CPA firm in San Ramon, California. This is a Contract position suited for someone who can quickly step into a fast-moving environment and provide dependable on-site support. The ideal candidate brings strong technical confidence, excellent organizational ability, and a hands-on approach to coordinating administrative tasks with accuracy and consistency. Administrative Assistant Responsibilities:• Support day-to-day office activities by handling administrative tasks that keep operations running smoothly in a business services setting.• Maintain calendars, correspondence, files, and business documents using Outlook, Excel, Teams, and document management platforms.• Process incoming and outgoing mail, including regular retrieval of physical mail from an off-site PO Box in the San Ramon area.• Enter, update, and verify information in internal records and spreadsheets with a strong focus on accuracy and completeness.• Coordinate multiple assignments at once, adjusting priorities as business needs change while meeting deadlines.• Provide general office support, including document handling, routing communications, and assisting staff with administrative requests.• Support execution of marketing events and conferences.• Assistant with ad hoc projects and operational initiatives as assigned. • Handle sensitive and confidential information with discretion.• Demonstrate proficiency in basic accounting functions, including account reconciliation, processing vendor invoices, and maintaining accurate financial records. If you are interested in this administrative role, please apply today!
2026-10-15T00:00:00Z

Administrative Assistant

Hayward, CA
onsite
Temporary / Contract
19.95 - 23.1 USD / Hourly
We are looking for an organized Administrative Assistant to support daily office operations for a healthcare organization in Hayward, California. This Long-term Contract position is ideal for someone who communicates clearly, manages multiple administrative tasks efficiently, and is comfortable serving as a reliable point of contact in an office setting. The role will focus on coordinating front-office activities, handling documentation, and maintaining accurate records while contributing to a smooth and responsive workplace. Responsibilities: • Manage incoming phone calls, direct inquiries appropriately, and provide courteous assistance to patients, staff, and visitors. • Perform a range of office support duties, including preparing paperwork, organizing files, and maintaining administrative records. • Enter information into internal databases and documents with a high level of accuracy and attention to detail. • Welcome and assist visitors while helping maintain an orderly and well-organized reception area. • Process routine documents and ensure completed materials are filed, tracked, and distributed correctly. • Support day-to-day office coordination by scheduling, responding to general requests, and following established administrative procedures.
2026-10-01T00:00:00Z

Administrative Assistant

Walnut Creek, CA
onsite
Temporary / Contract
23 - 28 USD / Hourly
About Robert Half:Robert Half is a specialized talent solutions and staffing firm that connects skilled professionals with leading companies across a variety of industries. Our team partners with organizations throughout the Bay Area to support hiring needs in Administrative, Customer Service, Finance & Accounting, Human Resources, and other professional disciplines. This is not an active opening with a specific client at this time. We are proactively connecting with Administrative Assistants interested in upcoming temporary and temp-to-hire opportunities. By applying, you'll have the chance to be considered for future roles that match your skills and career goals. Robert Half is always looking to connect with organized, detail-oriented Administrative Assistants who enjoy supporting busy teams and helping offices run efficiently. If you thrive in a fast-paced environment, enjoy coordinating schedules, and take pride in keeping things organized, we'd love to hear from you. Key Responsibilities:• Manage and maintain calendars, appointments, and meeting schedules for team members.• Coordinate conference calls, meetings, and office events.• Answer phones, respond to emails, and direct inquiries appropriately.• Prepare correspondence, reports, and other administrative documents.• Maintain organized filing systems, records, and office supplies.• Support data entry and assist with special projects as needed.• Provide general office support to ensure efficient day-to-day operations. If you are interested in this Administrative Coordinator position, please submit your resume today to be considered!
2026-10-02T00:00:00Z

Part-Time Office Assistant

San Ramon, CA
onsite
Temporary / Contract
24 - 28 USD / Hourly
About Robert Half:Robert Half is a specialized talent solutions and staffing firm that connects skilled professionals with leading companies across a variety of industries. Our team partners with organizations throughout the Bay Area to support hiring needs in Administrative, Customer Service, Finance & Accounting, Human Resources, and other professional disciplines. This is not an active opening with a specific client at this time. We are proactively connecting with Office Assistants interested in upcoming temporary and temp-to-hire opportunities. By applying, you'll have the chance to be considered for future roles that match your skills and career goals. Robert Half client is seeking a reliable and detail-oriented Part-Time Office Assistant to support daily office operations and help keep the team organized and efficient. This is an ongoing opportunity ideal for a professional who thrives in a fast-paced environment and enjoys providing high-level administrative support.Key Responsibilities:<ul><li>Manage calendars, schedule meetings, and coordinate appointments</li><li>Answer and direct phone calls and emails professionally</li><li>Prepare correspondence, reports, and other documents</li><li>Maintain filing systems and accurate records</li><li>Order office supplies and support general office operations</li><li>Assist with data entry, expense reports, and invoice processing</li><li>Support internal teams with administrative projects and workflow coordination</li><li>Greet visitors and provide front-office support as needed</li></ul> If you are interested in this Office Assistant position, please submit your resume today to be considered!
2026-10-02T00:00:00Z

Executive Assistant

Santa Clara, CA
onsite
Temporary to Hire
35.625 - 41.25 USD / Hourly
We are looking for an Executive Assistant to support daily business operations and provide high-level administrative coordination in Santa Clara, California. This contract opportunity is ideal for a resourceful individual who can balance executive support, office logistics, and cross-functional coordination in a hybrid work environment. The role works closely with leadership to keep schedules, meetings, visitors, and operational activities organized and running efficiently. Responsibilities: • Coordinate executive calendars, arrange meetings, and manage reservations and occasional travel planning to support day-to-day priorities. • Oversee office readiness by maintaining shared spaces, preparing meeting rooms, and helping create a welcoming environment for employees and guests. • Administer vendor-related activities, including tracking agreements, renewals, and ongoing service needs. • Prepare and submit expense documentation accurately while supporting filing, recordkeeping, and data entry tasks. • Organize recurring team meetings and assist with notes, follow-up items, and scheduling logistics. • Support the development and formatting of presentations, reports, and other business documents using Microsoft Office tools. • Assist with onboarding coordination and help manage internal events, including hospitality, scheduling, and operational details. • Arrange accommodations and provide attentive support for visiting employees, board members, and other senior guests. • Use Salesforce and related systems to help maintain internal workflows and complete ad hoc projects assigned by leadership.
2026-10-16T00:00:00Z

Executive Assistant

San Jose, CA
onsite
Temporary / Contract
38 - 44 USD / Hourly
We are looking for an Executive Assistant to provide high-level administrative support to leadership in San Jose, California. This Long-term Contract position focuses on keeping executive schedules organized, coordinating complex travel plans, and ensuring meetings run smoothly. The ideal candidate is detail-oriented, proactive, and comfortable managing multiple priorities in a fast-paced environment. Responsibilities: • Manage executive calendars by scheduling appointments, adjusting priorities, and resolving conflicts to support daily operations. • Arrange domestic and international travel, including flights, lodging, ground transportation, and itinerary preparation. • Coordinate travel logistics and update plans quickly when schedules, meetings, or reservations change. • Organize executive meetings by preparing agendas, confirming attendance, reserving meeting space, and handling related logistics. • Serve as a key administrative partner to leadership by anticipating needs and helping maintain efficient workflows. • Track important dates, appointments, and follow-up items to ensure commitments are completed on time.
2026-10-13T00:00:00Z

Executive Assistant

San Jose, CA
onsite
Temporary / Contract
38 - 45 USD / Hourly
<ul><li>Provide comprehensive administrative and operational support to the CEO and other C-level executives.</li><li>Own and manage complex, dynamic calendars, including scheduling across multiple time zones, prioritizing competing requests, and proactively resolving conflicts.</li><li>Coordinate internal and external meetings with senior executives, Board members, investors, customers, partners, and other key stakeholders.</li><li>Ensure executives are fully prepared for meetings by coordinating agendas, briefing materials, presentations, and other relevant information.</li><li>Manage domestic and international travel arrangements, itineraries, accommodations, transportation, and last-minute changes.</li><li>Serve as a trusted point of contact and gatekeeper, exercising exceptional judgment and discretion when managing executive communications and access.</li><li>Track follow-ups, action items, and commitments to ensure important priorities stay on track.</li><li>Coordinate leadership meetings, Board meetings, offsites, conferences, and other executive events.</li><li>Handle highly confidential and sensitive information with professionalism and discretion.</li><li>Anticipate executive needs and proactively identify potential scheduling, logistical, or organizational issues before they arise.</li><li>Partner closely with other Executive Assistants and administrative teams to ensure seamless coordination across the executive organization.</li><li>Support special projects and other strategic or administrative priorities as needed.</li></ul>
2026-10-06T00:00:00Z

Legal Assistant

Walnut Creek, CA
onsite
Temporary / Contract
33 - 43 USD / Hourly
We are looking for a Legal Assistant to join a defense-focused litigation practice in Walnut Creek, California. This contract-to-hire opportunity is ideal for someone who is comfortable supporting attorneys in a fast-paced civil litigation environment and can manage both case-related and administrative tasks with accuracy. The role begins with a fully on-site training period of 90 days, followed by a hybrid schedule with three days in the office and two days working from home. Candidates who bring strong court filing experience, strong document preparation skills, and dependable organizational support will be well positioned for success. Responsibilities:• Prepare, revise, and finalize legal documents so they meet court formatting requirements and attorney expectations.• Handle electronic filings in both state and federal courts, ensuring submissions are accurate and completed within required deadlines.• Maintain attorney calendars by tracking hearings, filing dates, meetings, and other litigation-related commitments.• Provide day-to-day administrative assistance to attorneys, including organizing case materials and supporting workflow coordination.• Support civil litigation matters by managing documents, monitoring deadlines, and helping keep case activity on schedule.• Review filing details and court requirements carefully to reduce errors and help maintain compliance across active matters.
2026-10-01T00:00:00Z

Human Resources (HR) Assistant

Fremont, CA
onsite
Temporary / Contract
26.6 - 30.8 USD / Hourly
We are looking for a Compensation and Benefits Administrator to join an established client in the South Bay. This is a direct permanent offering an excellent opportunity to support key HR functions and enhance your skills. The role involves working closely with the HR Management team and being point of contact for Compensation and Benefits Administration. Responsibilities: • Coordinate and manage Employee Compensation and Benefits • Assist in maintaining and updating Human Resources Information Systems (HRIS) to reflect current employee data. • Provide administrative support for various HR functions, including record-keeping and policy updates. • Collaborate with team members - HRIS system recording all Compensation and Benefit changes • Ensure adherence to company policies and employment regulations in all HR practices. • Prepare reports and summaries related to HR activities for management review. • Support the implementation of new HR initiatives to improve operational efficiency
2026-10-07T00:00:00Z

Accounting Clerk

Walnut Creek, CA
onsite
Temporary / Contract
19 - 22 USD / Hourly
We are looking for an Accounting Clerk to support day-to-day administrative and accounting operations. This Long-term Contract position is ideal for someone who enjoys accurate record handling, document organization, and providing dependable office support in a structured environment. The role centers on clerical accounting tasks while also assisting with front desk coverage as needed. Responsibilities:• Organize, file, and maintain accounting records so documents are easy to retrieve and properly archived.• Scan paid vendor invoices and upload them accurately into the company’s recordkeeping system.• Enter financial and administrative data with a high level of accuracy and attention to detail.• Support accounts payable activities by helping process invoice documentation and related records.• Assist with accounts receivable administrative tasks, including updating files and verifying entries.• Provide backup reception support by greeting visitors, answering phones, and directing inquiries appropriately.• Help maintain an orderly front office by managing routine clerical tasks and general administrative needs.
2026-10-14T00:00:00Z

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

Union City, CA
onsite
Temporary / Contract
20 - 22.5 USD / Hourly
We are looking for an Accounting Clerk to support day-to-day financial and administrative operations for a team in California. This contract position is ideal for someone who is organized, detail-focused, and comfortable handling both accounting tasks and general office support in an onsite environment. The role will contribute to accurate recordkeeping, timely invoice processing, and clear communication with internal teams and external contacts. Responsibilities: • Process customer and vendor billing records, ensuring invoices are entered accurately and routed in a timely manner. • Maintain accounts receivable documentation, track outstanding items, and assist with follow-up activities as needed. • Enter financial and clerical data into internal systems with a high level of accuracy and attention to detail. • Use Microsoft Excel and Word to prepare reports, update templates, and organize supporting documentation. • Scan, file, and code paperwork and accounting records so they are easy to retrieve and audit. • Provide front office and receptionist-style support, including handling inquiries and directing communications clearly. • Assist with onboarding and training-related administrative tasks, including preparing documents and supporting hiring process paperwork. • Work within SAP R/3 and related systems to update transaction details and maintain accurate accounting records.
2026-09-25T00:00:00Z

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

Walnut Creek, CA
onsite
Permanent / Full Time
0 - 0 USD / Hourly
Join Robert Half’s Full-Time Engagement Professionals (FTEP) practice as an Accounting Clerk and gain hands-on experience supporting a variety of client projects. You’ll contribute across key accounting functions, including accounts payable, accounts receivable, billing, collections, and general accounting. We’re looking for detail-oriented candidates with intermediate Excel skills and a strong foundation in accounting or finance. A degree in Accounting, Finance, or a related field is preferred. 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>
2026-10-16T00:00:00Z

Accounting Clerk

San Ramon, CA
onsite
Permanent / Full Time
24.5 - 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 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

Union City, CA
onsite
Temporary / Contract
28 - 32 USD / Hourly
We are looking for an Accounting Clerk to support day-to-day financial recordkeeping and transaction processing for a team based in Union City, California. This 4 month Contract position is well suited for someone who is organized, detail-focused, and comfortable working with accounting systems and spreadsheets to maintain accurate documentation. The person in this role will help keep accounting records current, support reconciliation activities, and coordinate with internal finance partners to resolve discrepancies and collect missing information. Responsibilities:• Record vendor invoices, employee expenses, and other standard financial transactions in NetSuite using approved backup documentation.• Digitize and file receipts, invoices, statements, and related records, ensuring each document is clearly labeled and properly linked within the system.• Examine transaction support for omissions, duplicate postings, incorrect coding, or incomplete details, and escalate exceptions to the Finance team.• Reconcile accounting activity in NetSuite against bank records, spreadsheet trackers, and source documents, then summarize variances for follow-up.• Support account reconciliation work across areas such as bank accounts, credit cards, accounts payable, prepaid items, and inventory by compiling data and updating schedules.• Prepare transaction reports, spreadsheet support, and backup materials needed for journal entries, monthly close activities, and group-level reporting.• Review post-launch NetSuite data for gaps or inaccuracies and assist with tracking and resolving outstanding issues tied to migrated records.• Partner with internal teams to obtain approvals, invoices, receipts, and other required documentation while maintaining a clear log of pending items and cleanup progress.• Communicate with the Asia Finance team when needed to address documentation requests and outstanding follow-up items.
2026-10-06T00:00:00Z

17 results for Office Administrative Assistant in Manteca, CA