Part-Time Accounts and Office Administrator
ThreatDefence is a growing Australian cybersecurity company providing security technology, 24×7 managed security operations, and incident response services to organizations across Australia and internationally.
We are looking for a reliable and organized Accounts and Office Administrator to support our day-to-day accounts, office operations, travel, and company events.
About the Role
This is a hands‐on role combining bookkeeping, accounts administration, and general office management.
We work with an external accounting firm that manages payroll, tax, BAS, and higher-level compliance. This role will take ownership of the day‐to‐day internal accounts workflow and general administration.
Key Responsibilities
Accounts Administration
Process invoices and prepare payments for approval.
Manage customer invoices and statements.
Follow up outstanding customer accounts.
Reconcile statements, bank accounts, and credit cards.
Keep the accounts inbox organized and ensure requests are actioned.
Follow up missing invoices, receipts, approvals, and payment information.
Maintain accurate accounts payable and accounts receivable records.
Liaise with our external bookkeeping and accounting firm.
Provide general bookkeeping and accounts administration support.
Office Administration
Manage the day‐to‐day operation of the Sydney office.
Coordinate office supplies, equipment, maintenance, and service providers.
Liaise with building management, couriers,



cleaners, and suppliers.
Organize domestic and international business travel.
Coordinate attendance at conferences, trade shows, partner events, and customer events.
Manage event registrations, travel, accommodation, materials, and suppliers.
Support employee onboarding, team activities, meetings, and general administration.
Assist management with administrative tasks and process improvements.
Previous experience in bookkeeping, accounts administration, or a similar accounting role.
Strong practical experience using Xero.
Robust written and spoken communication skills.
Good knowledge of accounts payable, accounts receivable, invoicing, and reconciliations.
Strong attention to detail and organizational skills.
Confident communicating with customers and suppliers by phone and email.
Able to work independently and take ownership of tasks.
Confident using Microsoft Excel, Outlook, and other Microsoft 365 applications.
Reliable, practical, and proactive.
Hours and Location
Approximately two days per week.
Flexible working days for the right person.
Sydney-based role.
Why Join ThreatDefence?
This is a practical role where you can make a visible difference by improving the structure and consistency of our accounts and office administration.
You will work closely with the management team in a growing Australian technology business and have the opportunity to take ownership of the role.
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📌 Part-Time Accounts And Office Administrator (Sydney)
🏢 Threatdefence
📍 Sydney