Part-Time Administrative Assistant

GBA Team•Austin, TX

35d•Onsite

About The Position

Build Your Future with GBA. At GBA, we’re more than an engineering and architecture firm—we’re problem-solvers, collaborators, and trusted partners working together to support the communities we serve. As we grow, strong administrative and operational support plays a critical role in helping our teams stay organized, connected, and focused on delivering high-quality work. We’re seeking a Part-Time Administrative Assistant I to support our Austin office. This role is ideal for someone who enjoys coordinating day-to-day activities, supporting project teams, and creating a positive, organized work environment. This position goes beyond traditional administrative work—it plays a key role in keeping projects, teams, and office operations running smoothly.

Requirements

High school diploma or equivalent required.
Previous administrative, office coordination, or professional support experience preferred.
Proficiency with Microsoft Office applications, including Outlook, Word, Excel, and Teams.
Strong organizational and time management skills.
Ability to prioritize work, manage multiple tasks, and adapt to changing needs.
Strong written and verbal communication skills.
Professional judgment with the ability to maintain confidentiality.
High attention to detail and strong follow-through.

Nice To Haves

You are proactive, dependable, and take initiative.
You enjoy supporting teams and helping others succeed.
You thrive in a collaborative, fast-paced office environment.
You bring strong organizational skills and attention to detail.
You look for ways to improve efficiency, consistency, and team support.

Responsibilities

Maintain calendars, schedule meetings, and coordinate Lunch & Learn sessions.
Support Project Managers and leadership with administrative coordination and documentation.
Prepare meeting agendas, capture notes, and track follow-up action items.
Assist with onboarding coordination, internal communications, and office-wide initiatives.
Help maintain efficient workflows and identify opportunities to improve organization and consistency.
Support invoice routing, expense tracking, and general operational activities.
Serve as a point of contact for employees, visitors, vendors, and project teams.
Coordinate office operations, including supplies, equipment, and vendor communication.
Maintain organized digital files, records, and shared resources.
Assist with planning office events, employee engagement activities, and team functions.