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Office assistant Jobs in Costa Mesa, CA

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Office assistant • costa mesa ca

Last updated: 15 hours ago

Construction office manager

coastal buildersOrange, CA, US
Full-time +1Full-time +1

Here is the updated, polished job posting incorporating the part-time to full-time growth path and your benefits package:.Office Manager (Construction) — Hybrid.Part-Time transitioning to Full-Time... Show more

Medical Assistant - Back Office

newport orthopedic instituteNewport Beach, CA, United States
$21.00–$24.00 hourly$21.00–$24.00 hourly
Full-timeFull-time

Medical Assistant (Back Office).At Newport Orthopedic Institute, "Motion is Life!" What you'll find here is something special it's purposeful work done with a shared sense of community that brings... Show more

Administrative Assistant- VMO Office

johnson service groupIrvine, CA, US
$46.00 hourly$46.00 hourly
Full-timeFull-time
Quick Apply

Johnson Service Group (JSG) is seeking a detail-oriented .Vendor Management Office (VMO).This role will assist with contract administration, vendor management activities, reporting, file maint... Show more

 • New!

Office Specialist

trade jobs work force92706 Santa Ana, CA, US
Full-timeFull-time

Coordinates activities of subordinates.Maintains a variety of records requiring classification and compilation of varied information.Compiles special reports or studies where analysis of complicate... Show more

 • Promoted

Office Assistant - Irvine Orange County

generator supercenter orange countyIrvine, CA, US
$22.00 hourly$22.00 hourly
Full-time +1Full-time +1

California is one of the states with the most power outages and there is strong demand for backup power solutions.This is a very exciting opportunity to be a part of addressing the fast-growing nee... Show more

Multi-Office Leader

h r blockIrvine, CA, United States
$72,384.00–$75,000.00 yearly$72,384.00–$75,000.00 yearly
Full-timeFull-time

The Multi-Office Leader, known internally as an Area Experience Leader, leads a portfolio of 46 retail offices and is responsible for delivering a consistent, high-quality client experience across ... Show more

Back Office Medical Assistant

argus medical managementNewport Beach, CA, USA
$23.00–$24.00 hourly$23.00–$24.00 hourly
Full-timeFull-time
Quick Apply

Newport Children's Medical Group provides expert, compassionate pediatric care for children of all ages, from newborns to adolescents, at its locations in Newport Beach, Irvine, Costa Mesa, and Lag... Show more

Assistant Rooms Operations Manager - Front Office

marriott internationalNewport Coast, CA, United States
$27.50–$31.25 hourly$27.50–$31.25 hourly
Full-timeFull-time

Entry level management position that focuses on supporting the day-to-day activities of Rooms Operations of areas that include Housekeeping, Recreation.Laundry, Staff, AYS and Concierge/Guest Servi... Show more

Office Coordinator

tp linkIrvine, California, United States
$25.00–$33.00 hourly$25.00–$33.00 hourly
Full-timeFull-time

Headquartered in the United States, TP-Link Systems Inc.The company is committed to delivering innovative products that enhance people’s lives through faster, more reliable connectivity.With a comm... Show more

Sr. Leasing Administrative Assistant, Leasing - Office Division ($35.67 - $44.28)

irvineIrvine, CA, US
Full-timeFull-time

Administrative Assistant is an integral part of the Leasing team.This position provides support to the Senior Vice President, Leasing, with administrative needs, lease negotiation tracking, documen... Show more

Dental Office Assistant

trade jobs workforce92701 Santa Ana, CA, US
Full-time +1Full-time +1

An established pediatric dental office is looking for Dental Assistants who are available to start immediately.We are seeking a candidate that is willing to work a part-time or full-time schedule, ... Show more

 • Promoted

Front Office Medical Assistant

uyen jackie nguyen m dHUNTINGTON BEACH, CA, US
$18.00–$26.00 hourly$18.00–$26.00 hourly
Full-timeFull-time

We are seeking a Front Office Medical Assistant to become a part of our team! You will perform routine administrative and clinical assignments to keep the medical facility running smoothly.Check pa... Show more

Office/HR Assistant

gyukakuTustin, CA, US
$20.00–$25.00 hourly$20.00–$25.00 hourly
Part-timePart-time

Office / HR Assistant (Part-Time).Enry JP Corporation (Gyu-Kaku Japanese BBQ Franchise).We are looking for a motivated and reliable Office / HR Assistant to join our team and support our administra... Show more

Executive Assistant / Paralegal / Office Manager

altametricsCosta Mesa, California, United States
Full-timeFull-time
Quick Apply

Gala Capital Partners is a diversified investment firm based in Costa Mesa, CA.We focus on long term investments in Software, Franchise Restaurants and Real Estate throughout the US.We are seeking ... Show more

Office Assistant

newport solutionsHuntington Beach, CA, US
$20.00–$21.50 hourly$20.00–$21.50 hourly
Full-timeFull-time

We’re looking for an organized, proactive, and personable.Office Manager/Administrative Assistant.This is a hands-on role for someone who enjoys keeping an office running smoothly, working directly... Show more

Front Office Assistant

memorial care medical foundationIrvine, California, US
$30.08 hourly$30.08 hourly
Full-timeFull-time

FOA Level 1 – 0 to 2 year of Experience Pay Range: $23.FOA Level 2 – 2+ years of Experience Pay Range: $23.MHS employment, contingent upon satisfaction of employment requirements.MemorialCare is a ... Show more

Office Administrative Assistant

mission landscape companiesSanta Ana, CA, USA
$23.00–$25.00 hourly$23.00–$25.00 hourly
Full-timeFull-time
Quick Apply

Job Title: OFFICE ADMINISTRATIVE ASSISTANT EXEMPT: NO LOCATION: SANTA ANADIVISION: HOURS: 8:00am – 5:00pmREPORTS TO: HR ManagerDAYS: Monday - Friday Summary: This position is responsible for the pr... Show more

Office Assistant - JOEY Newport Beach

joey restaurantsNewport Beach, CA, US
$23.00–$29.00 hourly$23.00–$29.00 hourly
Part-timePart-time

Actual offer within the listed range may vary based on work experience and other objective factors.The pay range for this position is subject to change and may be modified in the future, in complia... Show more

Office Manager

hughes marinoIrvine, CA, USA
$65,000.00–$70,000.00 yearly$65,000.00–$70,000.00 yearly
Full-timeFull-time
Quick Apply

About Hughes MarinoHughes Marino is a global corporate real estate advisory firm that has represented companies on tens of thousands of projects, helping them develop and execute on winning corpora... Show more

People also ask
Construction office manager

Construction office manager

coastal buildersOrange, CA, US
26 days ago
Job type
  • Full-time
  • Part-time
Job description

Here is the updated, polished job posting incorporating the part-time to full-time growth path and your benefits package:


Office Manager (Construction) — Hybrid

Location: Hybrid (Remote / In-Office)


Position Type: Part-Time transitioning to Full-Time as the company scales


Compensation: Competitive hourly rate (commensurate with experience)


Benefits: Paid Time Off (PTO), Paid Sick Leave, and Paid Holidays / Vacation


About Us

We are an ambitious, fast-growing construction company dedicated to delivering top-quality projects and exceptional client experiences. As our project pipeline expands, we are looking for a sharp, proactive Office Manager to serve as the operational hub of our business.


If you thrive in a dynamic, entrepreneurial environment, love bringing structure to moving parts, and want a role where your contributions directly shape our company’s growth, we would love to meet you!


The Opportunity

This position begins as a part-time role (approx. 20–25 hours/week) with a clear, defined path to full-time as project volume and operations expand. It offers a balanced hybrid schedule, allowing you to work both from home and on-site at our office.


Key Responsibilities

  • Financial & Invoicing Administration:


    • Manage day-to-day Accounts Payable (A/P) and Accounts Receivable (A/R).


    • Generate, distribute, and track client billings and vendor/subcontractor invoices.


    • Process purchase orders (POs) and reconcile job-cost records inside QuickBooks.


  • Project & Change Order Tracking:


    • Track, log, and process change orders from request through owner approval and subcontractor execution.


    • Maintain meticulous physical filing systems for paper copies as well as organized digital archives.


  • Compliance & Subcontractor Onboarding:


    • Collect and review Certificates of Insurance (COIs), trade licenses, and W-9s to ensure full subcontractor compliance.


    • Collect, track, and verify lien releases/waivers (conditional and unconditional) prior to issuing payments.


  • Operations & Communication:


    • Act as a reliable point of contact between our field team, project managers, subcontractors, and vendors.


    • Streamline administrative procedures to help the business operate efficiently as we scale.


Requirements & Qualifications

  • Construction Experience: Solid background in the construction trades or general contracting. You must be comfortable with standard construction terminology, contracts, subcontractor agreements, and basic regulatory requirements.


  • Software Proficiency: Hands-on experience with QuickBooks (Online or Desktop) and proficiency in Microsoft Office / Google Workspace (especially spreadsheets). Familiarity with construction management platforms (Buildertrend, Procore, etc.) is a plus.


  • Lien & Compliance Literacy: Practical understanding of preliminary notices, lien waiver procedures, and subcontractor insurance/licensing standards.


  • Core Skills:


    • Exceptional organizational and multi-tasking skills.


    • Strong independent time management suited for a hybrid/remote workflow.


    • Clear, professional written and verbal communication.


What We Offer

  • Growth Path: A direct avenue to transition from part-time into a core, full-time operational leadership role.


  • Flexibility: Work-from-home flexibility combined with collaborative in-office days.


  • Benefits: Paid leave, vacation days, and paid holidays.


  • Culture: A collaborative, transparent, and supportive small-team environment where your voice and ideas matter.


How to Apply

Please send your resume along with a brief note highlighting your experience with construction administration, lien waivers, and QuickBooks.