1,713 Results for

Assistant Jobs in Costa Mesa, CA

Jobs

New!

Irvine, CA1 day ago

$20–$31 Per Hour

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. A growing public accounting team is seeking a detail-focused Tax Administrative Assistant to support tax professionals with the preparation, assembly, and delivery of client returns.

Orange, CA7 days ago

$20–$22 Per Hour

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. The successful candidate will be responsible for managing front office operations, assisting with administrative tasks, and providing exceptional service to our staff and visitors.

New!

Newport Beach, CA6 days ago

Full-time

Our practice consists of 2 full time physicians, 1 full time Nurse Practitioner, ultrasound services 5 days/week and 8 full time staff employees, all located in a beautiful appointed office space in Newport Beach, California. The right candidate for this position must the following core competencies to be successful in this position: Superior customer service skills.

New!

Beverly Hills, CA3 days ago

$21–$26 Per Hour

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Prepare examination rooms for patient visits, including cleaning, sterilizing, and stocking all necessary medical supplies and equipment.

Commerce, CA7 days ago

Temporary

A well-established food distribution company in Commerce is seeking a reliable and detail-oriented Administrative Assistant to support daily office operations. This position will assist with administrative, accounting, and customer service functions while helping ensure accurate processing of delivery documentation and office records.

Newport Beach, CA7 days ago

$150,000–$200,000 Per Year

This role combines operational execution with process improvement, partnering closely with leadership to build scalable accounting processes that support a fast-growing business. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

Beverly Hills, CA7 days ago

$150,000–$225,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Reviewing and assessing quarterly budget to actual variances and preparing a quantitative and qualitative analysis, including line item and Executive Summary analyses, on the Company’s actual results relative to the budget.

New!

Los Angeles, CA2 days ago

Preferred: One (1) year of teaching experience in the subject areas taught or demonstrate prior training in instructional methodology and teaching skills from a formal teacher educational program or any comparable training program or formal in-house training program. Current CMA (AAMA) or RMA (AMT) or other medical assistant credential issued by AAMA accredited by the National Commission for Certifying Agencies (NCCA) or AMT accredited by the National Commission for Certifying Agencies (NCCA) required by local, state and/or federal laws or must be obtained within six (6) months of hire date.

New!

Anaheim, CA2 days ago

Reporting directly to the Program Director, the Lead Faculty assists the Program Director in providing leadership in managing, planning, and implementing the program in support of college and/or departmental goals in order to assure compliance with programmatic accreditation and/or licensure, internal consistency, and graduate outcomes to meet placement expectations. See American Career College Terms & Conditions at https://americancareercollege.edu/legal/terms-use.html and Privacy Policy at https://americancareercollege.edu/legal/privacy-policy.html and SonicJobs Privacy Policy at https://www.sonicjobs.com/us/privacy-policy and Terms of Use at https://www.sonicjobs.com/us/terms-conditions.

santa fe springs, CA23 days ago

$25–$30 Per Hour
Temporary

Weâre looking for a bilingual (English/Spanish) Shipping & Operations Assistant to support a busy production facility in Santa Fe Springs. This role focuses on keeping shipments, inventory, and daily operations running efficiently.

Fontana, CA9 days ago

$18.74–$23.47 Per Hour

ONSITE - full time onsite in Fontana ( with travel one day per week to support the Pico Rivera Service Center located in Pico Rivera, CA 90660. Assist in lab maintenance activities, including new chemical approvals, chemical inventory, lab computer management, and hazardous waste disposal coordination.

Norwalk, CA29 days ago

$23–$27 Per Hour

By serving as a key connection between patients, providers, and care teams, the Medical Assistant helps ensure smooth clinic operations and supports the overall effectiveness of the care center. This position is responsible for assisting with clinical and administrative functions that promote efficient care delivery, accurate documentation, and a positive patient experience.

REDONDO BEACH, CA12 days ago

$54,672–$62,100 Per Year

California Department of Corrections and Rehabilitation (CDCR)/California Correctional Health Care Services (CCHCS) Medical Assistants not only ensure the smooth flow of clinical operations, they’re also ensuring a better future for themselves with salary increases, secure benefits, and opportunities for growth along a well-defined nursing career ladder. All CDCR/CCHCS employees that refer a mental health clinician who is successfully hired by CCHCS may be eligible to receive a referral bonus of $5,000 per appointed referral.

New!

Laguna Hills, CA1 day ago

This role is responsible for accounts payable and invoice processing for fleet expenses and includes closing work orders in maintenance system, scorecard, and issue resolution. Must have strong analytical and problem-solving skills in order to formulate effective action plans to deal with issues proactively.

New!

Newport Beach, CA6 days ago

$20–$21.89 Per Hour

1+ years of clerical or secretarial experience, or an equivalent combination of business school/secretarial training and job-related experience. Provide routine administrative support for a department or administrative unit.

Irvine, CA7 days ago

$18–$20

The network (currently composed of approximately 220 schools) brings together some of the best private school programs in the country, with proven track records educating children through unique and carefully crafted curricula. LePort Montessori Schools provides students and families with an authentic Montessori educational experience facilitated by passionate Montessori educators who guide students in meaningful work within a beautifully prepared environment.

New!

Mission Viejo, CA1 day ago

$24.26–$37.11 Per Hour

Coursework/Training Has completed two years of medical training in the United States Armed Forces Or Minimum one year of work experience as a medical assistant that includes the following clinical skills: obtaining vital signs, administering injections, and medication administration. Together, our 120,000 caregivers (all employees) serve in over 50 hospitals, over 1,000 clinics and a full range of health and social services across Alaska, California, Montana, New Mexico, Oregon, Texas and Washington.

New!

Los Angeles, CA4 days ago

$48,000–$57,600 Per Year

See Sharp HealthCare Terms & Conditions at https://www.sharp.com/patient-rights-privacy/terms-of-use.cfm and Privacy Policy at https://www.sharp.com/patient-rights-privacy/privacy-practices.cfm and SonicJobs Privacy Policy at https://www.sonicjobs.com/us/privacy-policy and Terms of Use at https://www.sonicjobs.com/us/terms-conditions. The actual pay rate and pay grade for this position will be dependent on a variety of factors, including an applicant’s years of experience, unique skills and abilities, education, alignment with similar internal candidates, marketplace factors, other requirements for the position, and employer business practices.

New!

Riverside, CA4 days ago

$35,000–$42,000 Per Year

New!

Irvine, CA2 days ago

$18–$20

New!

Orange, CAToday

$24.26–$37.11 Per Hour

Garden Grove, CA20 days ago

$20–$22 Per Hour
Full-time
Employee

A manufacturing company located in Garden Grove is seeking an Administrative Assistant for their Shipping and Receiving Department to support daily administrative operations. This role is ideal for someone organized, friendly, and able to communicate effectively in both English and Japanese.

Alhambra, CA30+ days ago

$20–$30 Per Hour
Full-time
Employee

AHMC provides management services to AHMC Anaheim Regional Medical Center with 223 beds, Garfield Medical Center with 211 beds, Greater El Monte Community Hospital with 115 beds, Monterey Park Hospital with 102 beds, San Gabriel Valley Medical Center with 273 beds, Seton Medical Center with 357 beds, Seton Medical Center Coastside, a 116-bed skilled nursing facility, and Whittier Hospital Medical Center with 172 beds. The Administrative Assistant provides administrative support to the Senior Executive Vice President and the Corporate team in performing diversified administrative functions, which includes the maintenance of confidential records.

Los Angeles, CA21 days ago

$28–$33 Per Day
Full-time

Real Estate investment & property management Co. based in Los Angeles since 1975 is in need of an ADMINISTRATIVE ASSISTANT. It is also readily accessible to MTA transportation with many restaurants and amenities within walking distance.

Newport Beach, CA17 days ago

Full-time

This role is ideal for a proactive, highly organized, and detail-oriented professional who thrives in a fast-paced environment and is interested in long-term growth within the company. While pursuing a career in commercial real estate sales is not required, it is considered a plus.

Orange, CA13 days ago

$17–$18 Per Hour
Contractor
Full-time

Top 3/5 Skills: Data Entry, Office Administration. Min & Max Pay Rate: $17.00/hr - $18.00/hr.

Rancho Palos Verdes, CA23 days ago

$18,200–$18,200.01 Per Year
Full-time
Employee

Health Insurance: Low bi-weekly premiums ($34.62) for employee only coverage, Kaiser HMO for those residing in a Kaiser service area, Anthem EPO/PPO is available for those residing outside of a Kaiser service area. Parental Leave: Benefit will be one week (5 business days) of paid leave at the employee's normal rate of pay for births, adoptions and foster placements.

Manhattan Beach, CA30+ days ago

Share on X Print Application Deadline: Until Filled Date Posted: 22-07-2026 Contact: Valeria Galicia Phone: 310-318-7345 5914 Number of Openings: 10 Salary: Pay dependent on experience Addl Salary Info: Varies - See Classified Substitute Hourly Rate: Length of Work Year On Call Employment Type: Part Time. SUBSTITUTE ADMINISTRATIVE SUPPORT STAFF - SCHOOL ADMINISTRATIVE ASSISTANT SUB OFFICE SPECIALIST SUB REGISTRAR SUB ADMINISTRATIVE SUPPORT ASST.

Santa Ana, CA15 days ago

$18–$20 Per Hour

Duties of the Administrative Assistant include providing support to our managers and employees, assisting in daily office needs, and managing our company’s general administrative activities. We work closely with city, county, and state social service agencies, police departments, victim advocates, family resource centers, nonprofit agencies, and community service programs.

New!

Manhattan Beach, CA6 days ago

The Executive Assistant will support senior leadership directly, serving as the operational backbone for their day-to-day. Experience booking international travel (multi-leg, visa coordination, hotel and ground logistics).

Torrance, CA8 days ago

Stakeholder & Relationship Management: Act as a primary liaison between executives, internal business units, and external partners including interactions with executives at external partners, ensuring seamless communication and collaboration. This role manages complex scheduling, prioritizes critical tasks, coordinates business and travel logistics, and serves as a trusted liaison between executives and key stakeholders.

New!

Norco, California3 days ago

Leaps and Bounds Pediatric Therapy is looking for an energetic, driven professional to join our team as an Assistant to the Executive team We support our coworkers by helping them, working together, and by creating an environment of inclusiveness and positivity, where we put our patients first in all we do. Maintain strict discretion regarding sensitive information related to fundraising, strategic planning, and internal organizational plannings.

El Segundo, CA30+ days ago

$80,000–$110,000 Per Year

Provide comprehensive administrative support, including creating reports and briefings, reviewing staff packages, answering phones, managing conference rooms, scheduling meetings, supporting in/out-processing, managing mail, updating recall rosters, and tracking personnel actions. This Task Order (TO) provides the MilComm & PNT Directorate with a broad range of acquisition capabilities to execute effective and responsive integrated program management of space-related research, development, production, operations and maintenance, and lifecycle acquisition activities.

Irvine, CA28 days ago

Provide site support for local office requirements including phone coverage, assistance with new hire integration, facilities maintenance, supplies, floor access, presence at local events, greeting clients and guests and escorting them throughout the location, food orders/set up and takedown of conference rooms, always ensuring superior client service. You will be leading the office and schedule, tapping your thought leadership to managing priorities and ensuring efficient use of executives' time to plan and lead large events, Town Halls, maintain critical follow ups and will draft simple communications.

Long Beach, California7 days ago

We are seeking a highly organized and proactive Senior Executive Assistant to support our C-Suite Executives in managing the day-to-day operations and play a crucial role in providing administrative support, facilitating communication, and contributing to the overall success of our organization and culture. Vast is developing next-generation space stations to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers.

Costa Mesa, CA30+ days ago

$32.69–$33.65 Per Hour

This role is ideal for a proactive professional who has successfully supported senior leadership teams, managed high-level administrative responsibilities, and created professional presentations and marketing materials with exceptional attention to detail. We are seeking a highly polished Senior Administrative Assistant with strong executive support experience and a creative eye for graphic design to join a respected organization in Costa Mesa.

Fullerton, CA30+ days ago

$24–$26 Per Hour

Tasks include publishing a weekly newsletter, ordering office supplies, performing general clerical duties, and covering the Reception Desk while the Receptionists are on break or at lunch. As the assistant to the Executive Director, the Executive Assistant must demonstrate servant leadership skills as evidenced by his/her willingness to initiate and take appropriate action to trouble shoot resident and team member needs.

Long Beach, CA30+ days ago

$40,000–$55,000 Per Year

Send your resume and a brief note on why you’re excited about GenWealth 360 to admin@genwealth360.com with the subject line “Administrative Assistant – [Your Name]”. You’ll support executives and client-facing teams with scheduling, documentation, client onboarding, and day-to-day office coordination.

San Juan Capistrano, CA30+ days ago

$80,000–$100,000 Per Year

ESI is known as the Service Center and provides the facilities and leaders it serves with back-office support in areas such as accounting, construction, compliance, human resources, information technology, learning and development, legal and risk management and recruiting. In this dynamic role, you will serve as a critical force-multiplier, enhancing leadership productivity and ensuring seamless communication across service center staff, external partners, and field personnel.

Anaheim, California16 days ago

$23–$24

This role is essential in alleviating the workload of existing administrative staff by efficiently managing travel receipt tracking and communication with hotels, car rental companies, and traveling employees. A renewable energy company is seeking a personable and organized Temporary Administrative Assistant to support the Renewable Energy Division, with a focus on travel-related administrative tasks and general office duties.

CA13 days ago

$58,439–$68,752 Per Year

Building on the principles that have always guided us - excellence, integrity and respect - we strive to be forward-looking and innovative, to welcome people with diverse perspectives and talents, and to earn trust by living up to our commitments and by clearly explaining the intent of our policies and actions. We welcome all candidates to apply and strongly encourage candidates to self-identify if they identify with an Employment Equity designated group (Indigenous Peoples, Persons with Disabilities, Women or Racialized/Visible Minorities).

El Segundo, CA10 days ago

$90,000–$100,000 Per Year

The ideal individual will have the ability to exercise good judgment in a variety of situations, with strong written and verbal communication, administrative, and organizational skills, and the ability to maintain a realistic balance among multiple priorities. 5+ years of experience providing high-level administrative support working with senior executives, boards of directors, high level stakeholders.

New!

Santa Ana, CA3 days ago

The Administrative Assistant to the CEO provides high-level administrative, organizational, and logistical support to the Chief Executive Officer. Work Environment & Schedule Hourly position with a regular schedule; occasional evening or early morning availability may be required for meetings or events .

El Segundo, California30+ days ago

$80,000–$110,000 Per Year

SANTA FE SPRINGS, CA30 days ago

$75,000–$95,000 Per Year

PRIMARY FUNCTION: The Executive Administrative Assistant provides comprehensive, high-level administrative and operational support to the President [CEO] and Executive Leadership Team of a fast-paced logistics organization. The ideal candidate is highly experienced, proactive, and comfortable navigating complex priorities, executive-level communication, and sensitive matters.

Irvine, CA21 days ago

$100,000–$110,000 Per Year

As an Executive Assistant, you'll provide high-level administrative support to the CEO and collaborate closely with leadership to streamline daily operations and organizational efficiency. Join a dynamic organization dedicated to excellence as an Executive Assistant to the CEO in Irvine, CA, and make a significant impact every day.

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Assistant Jobs in Costa Mesa, CA

Tax Administrative Assistant Jobot

Front Desk Admin Assistant Jobot

Back Office/Medical Assistant Newport Center Womens Health

Medical Assistant Jobot

Administrative Assistant Kinetic Personnel Group

Assistant Controller Jobot

Assistant Controller - Family Office Jobot

Full Time Medical Assistant Instructor American Career College

Physical Therapy Assistant Instructor American Career College

Shipping Assistant Kinetic Personnel Group

Administrative Assistant-US Axelon

Certified Medical Assistant Mindlance

Medical Assistant - Mental Health California Correctional Health Care Services

US|Administrative Assistant|Contractor Axelon

Associate Administrative Assistant Axelon

Montessori Mandarin Assistant Teacher LePort Montessori

Medical Assistant - Internal Medicine Providence Health and Services

Medical Assistant - SRS Primary Care - Rancho Bernardo - Full-Time - Day Shift SHARP HEALTHCARE

Medical Assistant - Podiatry - SRS Rancho Bernardo - Full-Time - Day Shift SHARP HEALTHCARE

Montessori Assistant Teacher LePort Montessori

Medical Assistant Providence Health and Services

Administrative Assistant – Shipping & Receiving [Bilingual English / Japanese Languages] DSA International

Administrative Assistant AHMC Healthcare Inc

Administrative Assistant Reliable Properties

Administrative Assistant Rencata

Office Assistant Mindlance Incorporated

Summer Office Assistant - $350/week The Salvation Army Northwest Division

SUBSTITUTE Administrative Support Staff - School Administrative Assistant Sub, Office Specialist Sub, Registrar Sub, Administrative Support Asst. Sub HS, Attendance Assistant Sub, Clerical Assistant Sub Manhattan Beach City School District

Administrative Assistant Casa de la Familia

Executive Assistant Strategic Employment

Executive Administrative Assistant III (100805) Honda Motor Co Ltd

Executive Administrative Assistant Leaps & Bounds Pediatric Therapy

Executive Administrative Assistant Apogee Engineering LLC

Senior Executive Administrative Assistant JPMorgan Chase & Co

Executive Assistant Vast

Sr. Administrative Assistant 836603 Helpmates

Executive Assistant - Retirement Community Morningside CoreCare

Administrative Assistant GENWEALTH 360 INC

Executive Assistant - Legal The Ensign Group Inc

Administrative Assistant Ultimate Staffing Services

Executive Administrative Assistant Bank of Canada

Executive Assistant Faraday Future

Administrative Assistant to the Chief Executive Officer (Hourly) OCC Boy Scouts

Executive Administrative Assistant Apogee Engineering, LLC

EXECUTIVE ADMINISTRATIVE ASSISTANT General Logistics Systems US Inc

Executive Assistant to CEO | Urgently hiring! | 837628 Helpmates

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