Accounts & Administration Assistant – Full Time

Company: One-Step Marketing & Promotions (OSMP)
Location: Sydney CBD, NSW
Employment Type: Full-Time

About OSMP

One-Step Marketing & Promotions (OSMP) is a growing, family-owned sales, marketing and promotional agency with an outstanding reputation for delivering high-quality staffing and promotional solutions.

We specialise in sales, brand promotions, merchandising and customer service, representing leading international and Australian brands across major retailers, department stores, shopping centres and airports throughout Australia and New Zealand.

Our clients include some of the world's leading beauty, fragrance, fashion and retail brands.

At OSMP, we pride ourselves on professionalism, reliability, strong client relationships and delivering outstanding results. We are a close-knit team that values initiative, accountability, clear communication and a positive working environment.

About the Role

We are seeking a motivated, organised and detail-oriented Accounts & Administration Assistant to join our Sydney CBD office on a full-time basis.

This is an excellent opportunity for an accounting or finance graduate, or someone with some practical accounts experience, looking to develop their skills and build a long-term career within a growing business.

Working closely with our Accounts & Administration Manager and management team, you will provide essential support across daily accounting, payroll and general administration functions.

Key Responsibilities

Accounts & Finance

- Assist with Accounts Payable and Accounts Receivable.

- Process supplier invoices, customer invoices and payments.

- Perform accurate financial data entry and maintain accounting records.





- Monitor outstanding invoices and assist with debtor follow-ups.

- Assist with bank and account reconciliations.

- Track expenses, receipts and other financial transactions.

- Assist with fortnightly payroll processing and timesheet administration.

- Prepare basic financial reports and spreadsheets.

- Maintain accurate and up-to-date financial documentation.

General Administration

- Manage general office correspondence, emails and phone enquiries.

- Maintain electronic and physical filing systems.

- Assist with staff records, onboarding and HR administration.

- Coordinate meetings, appointments and general office requirements.

- Provide administrative support to management and operational teams.

- Assist with maintaining accurate employee and client documentation.

- Support the smooth day-to-day running of the office.

Skills & Qualifications

The ideal candidate will possess:

- A completed Bachelor's or Master's degree in Accounting, Finance or a related discipline.

- Approximately 6–12 months of experience in accounts processing, invoicing or financial administration.

- Basic knowledge of Accounts Payable and Accounts Receivable.

- Good computer skills, including Microsoft Excel, Word and Outlook.

- Strong attention to detail and numerical accuracy.

- Excellent organisational and time-management skills.





- Skilled written and verbal communication skills.

- A positive attitude, willingness to learn and a proactive approach.

- The ability to work independently and as part of a team.

Additional Advantage:

- Experience using Xero or other accounting software.

- Exposure to payroll processing and employee timesheet systems.

- Previous experience in a busy office or administration environment.

Why Join OSMP?

This is more than just an entry-level administration position. It is an opportunity to become part of a growing business and gain valuable, hands-on experience across accounting, finance, payroll and business administration.

You will work closely with an experienced management team, develop practical business skills and have the opportunity to take on greater responsibilities as you grow with the company.

We are looking for someone who is enthusiastic, reliable, takes initiative and is committed to becoming a valued long-term member of the OSMP team.

If you are motivated to learn, enjoy working in a fast-paced environment and want to build a rewarding career, this could be the perfect opportunity.

How to Apply

If you are looking to establish your career in accounting and administration and want to be part of a supportive, professional and growing organisation, we would love to hear from you.

Please send your resume and a brief cover letter outlining your experience and suitability for the position to:

Amy – Accounts & Administration Manager
Email: ••••@osmp.com.au

Join OSMP and be part of a growing team where your contribution makes a difference.

We look forward to hearing from you!

📌 Accounts & Administration Assistant - Full Time (Sydney)
🏢 One-Step Marketing & Promotions
📍 Sydney