As one of the largest providers of security services in Australia and New Zealand, our valued employees are supported by a highly experienced management team, industry-leading expertise, and a solid local and national infrastructure operating 24 hours a day.
Our vision is to be the most trusted provider of integrated security solutions, and our purpose is to build a safer future for everyone.
Wilson Security operates across a wide range of sectors and is committed to shaping the future of security through innovative and sustainable solutions that create enduring value for our people, customers, and the communities we serve.
Wilson Security's journey towards a more sustainable and responsible future is brought to life through our core values of Care, Innovation, Accountability, and Integrity, underpinned by the principles of ESG excellence.
About the role:
We are seeking an organised and detail-focused Accounts Assistant to join our team in Parramatta.
This role will support the day-to-day finance operations of Wilson Security, including accounts payable and receivable, customer invoicing, reconciliations, month-end processing and general financial administration.
Working closely with our finance and operational teams, you will help ensure transactions are processed accurately and on time, while providing responsive support to internal stakeholders, suppliers and customers.
Key Duties include:
Prepare weekly subcontractor RCTIs and work with rostering teams to ensure information is accurate
Assist with maintaining supplier rates and overrides within UKG
Prepare weekly payment uploads into D365 in line with required deadlines




Complete monthly reconciliations and investigate outstanding invoices or discrepancies
Process monthly customer invoices, manual invoices, credit notes and ad hoc revenue
Support the establishment of billing information for new sites and changes to customer rates
Assist operational teams with customer rate updates and invoicing requirements
Respond to supplier and customer queries in a timely and professional manner
Monitor supplier and invoicing inboxes and ensure correspondence is actioned appropriately
Assist with month-end processing, accruals and credits
Provide data entry and administrative support to the Commercial Analyst and Patrols team
Identify opportunities to improve finance and administrative processes
Skills and requirements:
1+ years' experience in an accounts, finance administration or similar role
Previous exposure to accounts payable, accounts receivable, invoicing or reconciliations
Strong administrative and organisational skills with excellent attention to detail
Intermediate computer skills, particularly across Microsoft Excel, Word and Outlook
Confidence learning and working with finance and business systems
Strong numerical and problem-solving skills
Excellent written and verbal communication skills
Ability to use initiative and manage competing priorities
Strong customer service skills and a professional approach when dealing with stakeholders
Qualifications and Experience:
Qualifications
Accounting qualification preferred, or currently studying towards a relevant accounting or finance qualification
Previous experience working within a finance or accounts environment will be highly regarded
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📌 Accounts Assistant (Sydney)
🏢 Wilson Group
📍 Sydney