Administration Assistant - Revesby office

About us
OneStop Fire is a specialist passive fire protection contractor delivering fire-stopping, penetration sealing and compartmentation works across Sydney. We're a proud member of Master Builders Association NSW, FPA Australia and Strata Community Association (NSW), and we run an integrated management system aligned to ISO 9001, 14001 and 45001.

We're a close-knit team of 12, and we're looking for an organised, detail-driven Administration Assistant to join our Revesby office.

About the role
Reporting to the Business Manager, you'll be at the centre of the office. You'll keep our job records, compliance documents and day-to-day operations running smoothly so our field teams can focus on delivering quality work. No two days are the same, and you'll get broad exposure to how a construction business operates.

What you'll be doing

Answering calls, managing the office inbox and greeting visitors

Setting up job file, creating job site folders and uploading site records, photos and completion documentation

Helping prepare quotes, variations and handover packs

Entering supplier invoices, collating timesheets and supporting debtor follow-up





Maintaining registers for staff licences, subcontractor insurances and vehicles

Supporting our ISO management system and audit preparation

Assisting with onboarding, training bookings and employee records

Providing general support to the Business Manager

What you'll bring

1–2 years' experience in an office administration role

Robust Microsoft Office skills, particularly Outlook, Word and Excel

Excellent communication and a professional, friendly manner

A sharp eye for detail and accuracy as well as the drive to take "initiative"

The ability to juggle priorities and work independently

Construction or trade industry experience, Xero or MYOB, or ISO/WHS exposure (highly regarded but not essential)

What's in it for you

Annual Salary + super, depending on experience

Full-time, permanent position, Monday to Friday.

Free onsite parking

A small team where your work is noticed and valued

The chance to grow your skills in a specialist, compliance-focused industry

Applicants must have full working rights in Australia.

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📌 Administration Assistant - Revesby office (Sydney)
🏢 OneStop Fire
📍 Sydney