We use essential cookies

Please Accept our Privacy Policy

Administrative Assistant

Martin & Wallin LLC

Cedar Park, TX 78613 • $20.00 to $26.00 / hr • 9/4/2026

Job Description

Job Description

Part-Time Administrative Assistant
Civil & Structural Engineering Office | Cedar Park / Leander, TX
Part-time | 20–25 hours/week | In office
Pay: $20–$26 per hour, based on experience

We are a local civil and structural engineering office in the Cedar Park / Leander area. We need an organized, productive part-time Administrative Assistant to support bookkeeping, proposals, scheduling, submittals, and permits so project managers can stay focused on design work.

What you’ll do

  • Enter bills, expenses, payments, and invoices in QuickBooks Online

  • Help prepare and follow up on client invoices

  • Format, proofread, and assemble proposals, letters, and client packages in Microsoft 365

  • Schedule meetings and track follow-ups with clients, agencies, and consultants

  • Assist project managers with submittals and permit applications

  • Maintain organized project files, logs, and office records

  • Handle phones, email, mail, printing, and document delivery

Requirements

  • 2+ years of administrative, bookkeeping, or project-support experience

  • Highly organized and productive; able to finish work without constant follow-up

  • Strong writing, proofreading, and document-formatting skills

  • Proficiency in Microsoft 365 (Word, Excel, Outlook, Teams, and PDFs)

  • Willingness to learn QuickBooks Online quickly

  • Reliable transportation to our Cedar Park / Leander office

  • Professional communication and attention to detail

Preferred

  • QuickBooks Online experience

  • Experience in an engineering, architecture, surveying, or construction office

  • Experience with proposals, submittals, or permit packages

What we offer

  • $20–$26/hour DOE

  • Flexible weekday part-time schedule

  • Prorated paid holidays and PTO

  • Small professional office with meaningful local project work

  • Opportunity for additional hours as needed

To apply Submit your rsum and a short note with:

  1. Your weekly availability

  2. Experience with QuickBooks Online, Microsoft 365, bookkeeping, proposals, or permits

  3. How you stay organized when several deadlines overlap