Demo

Senior Administrative Assistant

Helpmates
Irvine, CA Temporary
POSTED ON 5/13/2026 CLOSED ON 6/12/2026

What are the responsibilities and job description for the Senior Administrative Assistant position at Helpmates?

Exciting Opportunity for Experienced Executive Support Professionals — Urgently hiring Senior Administrative Assistant in Costa Mesa!


Job Title: Senior Administrative Assistant
Pay: $32.69 - $33.65 per hour
Hours: Monday - Friday, 8:00 AM - 5:00 PM
Start Date: ASAP

Duration: Temp to hire


Looking for a career growth opportunity in a dynamic, fast-paced environment? Join a respected organization based in Costa Mesa as a Senior Administrative Assistant and make an impactful difference each day.

As a Senior Administrative Assistant, you'll play a vital role in supporting top-level leadership teams, including the President, Vice Presidents, and Business Development teams. Your advanced organizational skills, mastery of Microsoft Office, and ability to manage multiple priorities will ensure smooth operations and professional execution across various functions. This position is perfect for a proactive professional with a passion for excellence, a knack for graphic design support, and multilingual capabilities.


What You'll Do
As a Senior Administrative Assistant, you will be responsible for:

  • Preparing presentations, proposals, and financial reports with precision and professionalism.
  • Maintaining and updating action trackers to ensure follow-up on outstanding tasks.
  • Coordinating timely submission of deliverables from internal teams and external partners to meet content and quality standards.
  • Managing interactions with third-party vendors, suppliers, and partners to facilitate seamless collaboration.
  • Organizing tradeshow participation and company events, including logistics, travel arrangements, print materials, and promotional items.
  • Managing schedules for senior leadership, including calendar optimization for meetings and deadlines.
  • Arranging complex international travel, accommodations, and meeting arrangements for executives.
  • Supporting cross-departmental initiatives, office needs, and special projects to keep operations running smoothly.


What You'll Bring
The ideal candidate for this role will have:

  • Proficiency in Microsoft PowerPoint, Word, and Excel at an advanced level.
  • Experience with digital and print graphic design standards, preferably with knowledge of Adobe InDesign, Illustrator, and Photoshop.
  • Strong attention to detail, accuracy, and quality in all work outputs.
  • Exceptional multitasking and prioritization skills in a deadline-driven environment.
  • Excellent time management and organizational abilities.
  • Outstanding verbal and written communication skills.
  • Fluency in Mandarin and/or Spanish is highly valued.
  • Previous experience supporting senior leaders in aerospace, defense, or manufacturing industries is a plus.
Company Description
For more than 50 years, Helpmates has been connecting job seekers with opportunities in a variety of specialties. When you apply with us, you’ll work one-on-one with our team members so that we can get your resume in front of the right employers. Once we’ve made the connections, we know you’ll take it from there. We're excited to see you thrive!

Salary : $33 - $34

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