Add your latest resume to match with open positions.

15 results for Administrative Assistant in Highland, CA

Administrative Assistant

Azusa, CA
onsite
Temporary / Contract
20 - 22 USD / Hourly
We are looking for an Administrative Assistant to provide organized, day-to-day support for operations leadership in Azusa, California. This Long-term Contract position is ideal for someone who can manage administrative details, coordinate meetings and travel, and handle confidential information with professionalism. The role offers the opportunity to support a mission-driven non-profit organization by keeping schedules, records, and office activities running smoothly. Responsibilities: • Provide administrative support to operations leadership by maintaining schedules, updating documents, and assisting with department-specific tasks. • Organize leadership meetings by preparing agendas, reserving meeting spaces, coordinating communications, arranging refreshments, distributing materials, and documenting meeting notes. • Travel to off-site meetings when needed to handle logistics and ensure events are properly arranged. • Maintain operational, statistical, and financial records, and prepare reports or summaries requested by management. • Create, organize, and safeguard electronic files while ensuring sensitive and confidential information is handled appropriately. • Serve as a front desk and office support contact by answering calls, directing inquiries, taking messages, and assisting with deliveries and daily mail distribution. • Monitor breakroom inventory, order necessary supplies, and restock shared office areas to maintain a functional workplace. • Coordinate conference participation for leadership by managing registrations, travel plans, and hotel accommodations. • Prepare business documents, presentations, spreadsheets, and correspondence using Microsoft Office applications, while also tracking project timelines and departmental workflows. • Support managers with calendars, vacation scheduling, in-service materials, presentation logistics, staff meetings, training participation, and other assigned projects.
2026-08-04T00:00:00Z

Administrative Assistant

Monrovia, CA
onsite
Temporary / Contract
22 - 23 USD / Hourly
Opportunities for top Administrative Assistant (Administrative Coordinator / Administrative Associate)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. Please email your resume and call 626.463.2031 for immediate consideration. How you will make an impact<ul><li>Fielding telephone calls</li><li>Receiving and directing visitors</li><li>Word processing, filing and faxing</li><li>Support on diverse projects for other employees as needed</li></ul> 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
2026-07-30T00:00:00Z

Administrative Assistant

Orange, CA
onsite
Temporary to Hire
20.5865 - 23.837 USD / Hourly
We are looking for a detail-oriented Administrative Assistant to support billing operations in Orange, California. This contract opportunity with permanent potential is ideal for someone who thrives in a fast-paced office environment and can manage a high volume of administrative and invoicing tasks with accuracy. The person in this role will help keep billing records organized, coordinate with internal teams and customers, and ensure documentation is complete so invoices are submitted on time. Responsibilities: • Manage a high daily volume of invoices, ensuring billing activity is processed accurately and on schedule. • Review inspection documentation, quoted work, and completed service transactions to prepare customer billing. • Confirm that reports include required approvals and supporting records before invoices are issued. • Communicate with staff and customers to obtain missing paperwork and clarify incomplete billing details. • Submit invoices through client billing portals while following each customer's formatting and documentation guidelines. • Maintain spreadsheets and tracking files to monitor completed work, invoice progress, and outstanding items. • Investigate billing variances, rejected invoices, and payment-related concerns to support timely resolution. • Provide general administrative support, including data entry, office coordination, and handling inbound calls as needed.
2026-08-10T00:00:00Z

Administrative Assistant

Arcadia, CA
onsite
Temporary to Hire
23.75 - 27.5 USD / Hourly
We are looking for a bilingual Administrative Assistant to support daily office operations. This fully onsite opportunity is ideal for a highly organized, detail-oriented individual who is comfortable managing multiple priorities, maintaining accurate records, and providing dependable administrative support. This is a contract position with the potential to become permanent for someone who works well in a busy environment and communicates effectively in both English and Spanish. Responsibilities: • Support day-to-day office activities by assisting leadership and staff with a wide range of administrative tasks. • Enter and update large volumes of information with accuracy while maintaining well-organized records and documentation. • Manage filing systems, prepare documents, and carry out general clerical work to keep operations running smoothly. • Provide front office support by answering inbound calls, directing inquiries, and assisting visitors effectively. • Assist with payroll-related data entry and help organize supporting information when needed. • Contribute to special assignments and administrative projects while handling additional duties as business needs change.
2026-08-10T00:00:00Z

Executive Assistant

Azusa, CA
onsite
Temporary / Contract
33.25 - 38.5 USD / Hourly
We are looking for an Executive Assistant to provide high-level administrative and operational support to senior leadership within a non-profit organization in Azusa, California. This Long-term Contract position will partner closely with operations executives to manage priorities, coordinate communications, and keep critical projects and meetings moving forward efficiently. The ideal candidate brings discretion, strong organizational judgment, and the ability to handle confidential matters while supporting executives, board-related activities, and cross-functional initiatives. Responsibilities: • Manage complex calendars, appointments, interviews, and executive meetings to ensure leaders are well-prepared and on schedule. • Track assignments and project milestones for operations leadership, sharing timely status updates with stakeholders and helping keep short- and long-range initiatives on target. • Prepare agendas, attend meetings, record accurate minutes, and distribute follow-up materials promptly to support informed decision-making. • Serve as a key point of coordination between operations leaders and internal or external contacts, relaying information clearly and directing inquiries to the appropriate parties. • Draft, revise, and format correspondence, reports, spreadsheets, and presentation materials on behalf of senior executives. • Arrange business travel, conference registration, lodging, and related logistics for leadership and team members as needed. • Organize and maintain electronic and manual records while safeguarding sensitive documents and confidential information. • Provide administrative support for presentations and special meetings, including assembling packets, preparing speaker materials, and assisting with logistics. • Support operational projects by monitoring deadlines, following up on action items, and helping leadership stay informed on progress and deliverables.
2026-08-06T00:00:00Z

Office Assistant

Rancho Santa Margarita, CA
onsite
Temporary / Contract
23.75 - 25 USD / Hourly
We are looking for a dependable Office Assistant to support daily administrative operations in California. This Long-term Contract position is ideal for someone who enjoys creating an organized, welcoming office environment while handling a variety of front-desk and clerical tasks. The role combines receptionist support, document management, data entry, and basic human resources assistance to help keep business activities running smoothly. Responsibilities: • Welcome visitors, manage front-desk activity, and provide attentive reception support throughout the day. • Answer incoming calls, direct inquiries to the appropriate contacts, and take clear, accurate messages when needed. • Scan, organize, and maintain paper and digital records to ensure documents are easy to retrieve and properly filed. • Perform general administrative work such as preparing correspondence, updating records, and supporting routine office operations. • Enter clerical and accounting-related information into internal records with close attention to accuracy and completeness. • Assist with basic HR-related administrative tasks, including document handling and support for employee record upkeep. • Monitor office workflows and help maintain an orderly workspace by completing time-sensitive support tasks as assigned.
2026-08-07T00:00:00Z

Sr. Administrative Assistant

Azusa, CA
onsite
Temporary / Contract
24.7 - 28.6 USD / Hourly
We are looking for an experienced Sr. Administrative Assistant to support leadership and operational teams in a fast-paced non-profit environment in California. This Long-term Contract position requires a highly organized, detail-oriented individual who can manage executive coordination, maintain confidential records, and keep critical activities on track. The ideal candidate will bring strong administrative judgment, excellent communication skills, and the ability to handle multiple priorities with accuracy. Responsibilities: • Serve as a key point of coordination between leadership and internal teams, helping ensure clear communication and strong working relationships across departments. • Manage calendars, scheduling needs, and shifting priorities for leadership while tracking upcoming deadlines, meetings, and commitments. • Organize leadership and operations meetings by preparing agendas and materials, arranging meeting space, coordinating attendees, and supporting presentation needs. • Record meeting notes, document follow-up items, and help drive completion of action steps after discussions and planning sessions. • Arrange travel, conference registration, lodging, and related expense documentation for leadership and contracted personnel. • Create, update, and safeguard electronic files, reports, correspondence, and other business documents using Microsoft Office and related tools. • Provide administrative support for events and departmental activities, including presentation materials, attendance tracking, meeting packets, and external speaker coordination. • Submit service requests for office equipment, technical support, and facility maintenance issues to ensure timely resolution of operational needs. • Maintain organized records, support compliance tracking for required staff education, and carry out assigned projects in alignment with organizational policies and safety standards.
2026-08-07T00:00:00Z

Accounting Assistant

Riverside, CA
onsite
Temporary / Contract
21.375 - 24.75 USD / Hourly
We are looking for an Accounting Assistant to support a mission-driven organization in March Air Reserve Base, California through a Contract position. This role combines day-to-day accounting support with administrative coordination, making it ideal for someone who is comfortable managing financial details while assisting with reporting and general office needs. The right candidate will bring hands-on experience with accounts payable and accounts receivable, strong attention to detail, and the ability to work effectively in an environment that serves vulnerable populations. Responsibilities: • Manage outgoing payments by reviewing invoices, coding expenses, and preparing checks for timely processing. • Record incoming payments accurately and maintain organized accounts receivable records, including high-volume transactions tied to grants, housing, and assistance programs. • Support routine account balancing activities by assisting with reconciliations and reviewing financial entries for accuracy. • Use QuickBooks Online and basic Excel functions to update financial records, track activity, and prepare supporting documentation. • Gather information and compile data for reports requested by leadership and program stakeholders. • Provide day-to-day administrative support, including coordinating documents, maintaining files, and assisting with operational tasks as needed. • Work closely with internal leadership to respond to shifting priorities and help keep accounting and administrative workflows on track.
2026-08-03T00:00:00Z

Accounting Assistant

Brea, CA
onsite
Temporary to Hire
24 - 25 USD / Hourly
We are looking for an Accounting Assistant to join a manufacturing organization in Brea, California on a contract basis with the potential for a permanent role. This position supports both payables and receivables operations, helping maintain accurate financial records and timely transaction processing. The ideal candidate is detail-oriented, organized, and comfortable handling a mix of invoice, payment, and general accounting tasks in a fast-paced environment. Responsibilities:• Enter supplier invoices into the accounting system with a high degree of accuracy and attention to detail.• Reconcile purchase orders, invoices, and payment records to confirm transactions are complete and properly supported.• Maintain organized digital records by scanning and filing invoice documentation for audit readiness and future reference.• Work with vendors and internal purchasing teams to investigate and resolve billing differences or pricing issues.• Coordinate scheduled and off-cycle payment runs while ensuring disbursements are processed correctly and on time.• Secure approvals for invoices outside the purchase order process and apply appropriate general ledger classifications.• Record incoming customer payments promptly and allocate receipts accurately within the accounting system.• Prepare customer billing from shipping documentation and issue invoices on a daily basis.• Review employee expense submissions for required support and policy compliance, and assist with journal entry processing or other accounting projects as needed.
2026-08-07T00:00:00Z

Legal Assistant

Irvine, CA
onsite
Permanent / Full Time
70000 - 100000 USD / Yearly
Looking to join a modern, growing litigation firm where your career can continue to evolve? Our client, a tech-forward civil litigation firm in Irvine, is seeking a Legal Assistant with 3+ years of litigation experience to join its collaborative team. This is an excellent opportunity for someone who enjoys working in a fast-paced environment, values mentorship, and wants to be part of a firm that embraces technology and continuous improvement.This position offers the chance to work closely with experienced attorneys while receiving ongoing training and professional development in a supportive team environment. What You'll Do<ul><li>Support attorneys throughout all phases of civil litigation</li><li>Prepare, revise, and proofread legal documents and correspondence</li><li>Manage attorney calendars, deadlines, and court filings</li><li>Coordinate depositions, mediations, and hearings</li><li>Prepare discovery, pleadings, and trial-related documents</li><li>Communicate with clients, opposing counsel, and court personnel</li><li>Maintain electronic files and utilize the firm's technology-driven systems</li></ul>What They're Looking For<ul><li>3+ years of civil litigation legal assistant experience</li><li>Experience with California state court filings (federal experience is a plus)</li><li>Strong organizational and time management skills</li><li>Excellent written and verbal communication</li><li>Ability to prioritize multiple deadlines in a fast-paced practice</li><li>Positive attitude with a desire to learn and grow</li></ul>Why This Firm?<ul><li>Growing civil litigation practice with long-term stability</li><li>Tech-forward environment utilizing modern legal technology</li><li>Direct mentorship from experienced attorneys and leadership</li><li>Ongoing training and career development</li><li>Collaborative, team-oriented culture</li><li>Opportunity to make a meaningful impact as the firm continues to expand</li></ul>Schedule<ul><li>Onsite daily – Irvine</li></ul>If you're looking for a firm that values professional development, embraces innovation, and offers long-term growth, I'd love to connect.Please send your resume to Quidana.Dove<at>RobertHalf.<com> for a confidential discussion.
2026-08-06T00:00:00Z

Legal Assistant

Irvine, CA
onsite
Permanent / Full Time
90000 - 110000 USD / Yearly
If you're a seasoned Litigation Legal Assistant looking for a firm where people build careers—not just jobs—this opportunity deserves your attention.Our client is a highly respected Orange County litigation firm with a thriving commercial and employment practice, a strong reputation in the legal community, and a track record of retaining top talent. As the firm continues to grow, they are seeking an experienced Legal Assistant to join their collaborative team. The firm continues to experience steady growth and is seeking an experienced Legal Assistant to support a busy team of attorneys handling sophisticated litigation matters in state and federal courts.This is an excellent opportunity to join a collaborative, professional environment that offers long-term career stability, challenging work, and a supportive team culture.Responsibilities<ul><li>Support attorneys handling commercial and employment litigation matters</li><li>Prepare, revise, and proofread pleadings, motions, discovery, and correspondence</li><li>E-file documents in California State and Federal Courts</li><li>Maintain attorney calendars and track litigation deadlines</li><li>Coordinate depositions, mediations, hearings, and client meetings</li><li>Prepare TOAs, TOCs, exhibits, and litigation binders</li><li>Manage case files and document organization</li><li>Assist with trial preparation and related litigation support</li></ul>Qualifications<ul><li>7+ years of litigation legal assistant experience</li><li>Strong experience with both California State and Federal Court procedures</li><li>Advanced e-filing experience in state and federal courts</li><li>Experience supporting commercial litigation, employment litigation, or other complex civil litigation matters</li><li>Proficiency with Microsoft Office Suite and litigation support software</li><li>Excellent organizational, communication, and multitasking skills</li><li>Ability to thrive in a fast-paced, deadline-driven environment</li></ul>Why Consider This Opportunity?<ul><li>Join a thriving and highly regarded Orange County litigation firm</li><li>Sophisticated commercial and employment litigation practice</li><li>Stable, growing firm with an excellent reputation in the legal community</li><li>Supportive attorneys and collaborative team environment</li><li>Meaningful work with direct exposure to complex litigation matters</li><li>Long-term career growth potential</li><li>Competitive compensation and comprehensive benefits package</li></ul>Benefits<ul><li>Medical, dental, and vision insurance</li><li>401(k) retirement plan</li><li>Paid vacation, sick time, and holidays</li><li>Professional development opportunities</li><li>Additional benefits to be discussed during the interview process</li></ul>If you're an experienced litigation legal assistant seeking a stable firm, sophisticated work, and a team-oriented culture, we'd love to connect with you.Submit resumes to Vice President, Quidana Dove at Quidana.Dove<at>RobertHalf.<com>
2026-07-29T00:00:00Z

Human Resources (HR) Assistant

Irvine, CA
onsite
Temporary / Contract
15.8365 - 25 USD / Hourly
We are looking for a Human Resources (HR) Assistant to support both office operations and day-to-day HR administration in Irvine, California. This Long-term Contract position is ideal for someone who enjoys balancing employee support, coordination tasks, and general administrative responsibilities in an organized office environment. The role will help keep workplace operations organized while assisting with onboarding, records management, and HR-related documentation. Responsibilities: • Oversee the presentation and readiness of shared office areas, including the front desk, meeting rooms, and common spaces. • Manage the flow of incoming and outgoing mail, shipments, and deliveries to ensure timely distribution and tracking. • Monitor inventory levels for office and breakroom materials and place orders as needed to keep supplies stocked. • Coordinate calendars for meetings, arrange room bookings, and provide logistical support for office gatherings and events. • Handle administrative duties such as organizing files, scanning records, entering data, and preparing business documents. • Support new employee onboarding by coordinating orientation activities and collecting pre-employment paperwork. • Assist with employee lifecycle administration, including onboarding, offboarding, and maintaining personnel documentation. • Process background screening, employment verification, and related hiring documents with accuracy and confidentiality. • Maintain secure and up-to-date employee records while following company policies and documentation standards. • Prepare HR-related reports, spreadsheets, correspondence, and provide support for employee engagement initiatives and company events.
2026-08-08T00:00:00Z

Office Manager

Irvine, CA
onsite
Permanent / Full Time
130000 - 170000 USD / Yearly
One of our best law firm clients is looking for an experienced Office Manager to lead the daily administrative operations of our office and help maintain a highly organized, efficient environment. This role works closely with firm leadership to support people operations, coordinate office services, and strengthen internal processes across a busy legal setting. The ideal candidate brings sound judgment, strong organizational skills, and a proven ability to keep multiple priorities moving smoothly in a services environment. Responsibilities:• Direct the day-to-day functioning of the office to ensure attorneys and staff have the resources and support needed to work efficiently.• Oversee employee onboarding and departures, including orientation scheduling, workspace and equipment coordination, and benefits-related administration.• Maintain personnel records and support compliance with internal policies, employment practices, and documentation standards.• Partner with leadership on recruiting logistics, interview coordination, performance review administration, and general employee support matters.• Manage office inventory, supplies, and equipment while monitoring workplace needs and resolving administrative issues promptly.• Build and manage relationships with building contacts and external service providers, including maintenance, telecommunications, IT, and office equipment vendors.• Coordinate repairs, facility upkeep, and workplace improvements to preserve a well-maintained and productive office environment.• Support administrative team members, help streamline workflows, and identify opportunities to improve operational efficiency.• Assist with tracking office-related expenses, vendor costs, and budget items while handling sensitive firm information with discretion. Please send your resume to Quidana.Dove<at>RobertHalf.<com> for a confidential discussion.
2026-08-06T00:00:00Z

Administrative and Events Coordinator

Walnut, CA
onsite
Temporary / Contract
22 - 25 USD / Hourly
Position SummaryWe are seeking a highly organized and detail-oriented Administrative & Events Coordinator to support daily office operations while planning and executing company events from start to finish. This role requires a proactive, customer-focused professional who thrives in a fast-paced environment, excels at multitasking, and enjoys coordinating logistics to ensure seamless operations and successful events.Key Responsibilities<ul><li>Provide administrative support including scheduling, calendar management, correspondence, filing, and document preparation.</li><li>Answer phones, greet visitors, and serve as the primary point of contact for internal and external inquiries.</li><li>Coordinate meetings, conferences, and corporate events, including venue selection, vendor management, catering, travel arrangements, and event logistics.</li><li>Manage event timelines, budgets, registration, materials, and post-event follow-up.</li><li>Maintain office supplies, equipment, and vendor relationships to ensure efficient office operations.</li><li>Prepare reports, presentations, and meeting agendas using Microsoft Office applications.</li><li>Coordinate travel arrangements, expense reporting, and executive support as needed.</li><li>Collaborate with cross-functional teams to ensure successful execution of company initiatives and events.</li><li>Maintain accurate records, databases, and filing systems while ensuring confidentiality of sensitive information.</li><li>Assist with special projects and other administrative duties as assigned.</li></ul>Qualifications<ul><li>2+ years of administrative, office coordination, or event planning experience.</li><li>Excellent organizational, time management, and multitasking abilities.</li><li>Strong written and verbal communication skills with a professional and customer-focused approach.</li><li>Proficiency in Microsoft Office Suite (Word, Excel, Outlook, PowerPoint); experience with event management software is a plus.</li><li>Ability to prioritize competing deadlines and adapt to changing business needs.</li><li>Strong attention to detail and problem-solving skills.</li><li>Associate's or Bachelor's degree preferred, or equivalent work experience.</li></ul>Preferred Skills<ul><li>Experience coordinating corporate meetings, conferences, or special events.</li><li>Budget tracking and vendor management experience.</li><li>Strong interpersonal skills with the ability to build relationships across all levels of the organization.</li><li>Ability to work independently while contributing effectively to a collaborative team.</li></ul>Key Competencies<ul><li>Organization and planning</li><li>Event coordination</li><li>Administrative support</li><li>Customer service</li><li>Communication</li><li>Time management</li><li>Problem-solving</li><li>Attention to detail</li><li>Relationship building</li><li>Project coordination</li></ul>
2026-07-29T00:00:00Z

Receptionist

Arcadia, CA
onsite
Temporary / Contract
20 - 22 USD / Hourly
We currently have an opening for an articulate, skilled Receptionist. In this role, you will greet visitors, handle incoming calls and perform general administrative duties. Proficient Receptionists will also assist other administrative staff with overflow work, including word processing, data entry and Internet research tasks.Receptionists with 1 or more years of experience managing multi-line phone systems (15+ lines) looking for new opportunities should apply today. Excellent career opportunity for a career-minded Receptionist with a strong desire to succeed! This is opportunity is available exclusively through Robert Half. For immediate consideration email your resume and call 626.463.2031· Answer and direct phone calls in a polite and friendly manner· Welcome visitors in a warm and friendly manner, and answer any questions visitors have· Maintain reception area and all common areas in a clean and tidy manner at all times· Operate standard office equipment on a regular basis, including a fax machine, a copy machine, and a computer· Keep detailed and accurate records of visitor requests and of calls received· Receive deliveries; sort and distribute incoming mail· Take inventory of supplies and restock as needed· Maintain the general office filing system
2026-07-30T00:00:00Z