Accounts & Administration Assistant - Full Time

One-Step Marketing & Promotions; Sydney; On-site; AUD 55,000 - 75,000; Full time

Job summary

One-Step Marketing & Promotions (OSMP) is seeking an Accounts & Administration Assistant to join our Sydney CBD office full-time. This entry-level role supports daily accounting, payroll and general administration while offering development in a growing, family-owned agency.

The ideal candidate will have a relevant degree and up to 12 months of accounts experience, with strong Excel, Word and Outlook skills and a proactive, detail-oriented approach. We encourage a long-term career within OSMP.

Qualifications

• Completed Bachelor's or Master's degree in Accounting, Finance or 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.
• Professional written and verbal communication skills.
• Positive attitude and proactive approach.
• Ability to work independently and as part of a team.

Responsibilities

• Accounts & Finance: Assist with Accounts Payable and Accounts Receivable.
• Accounts & Finance: Process supplier invoices, customer invoices and payments.
• Accounts & Finance: Enter financial data accurately and maintain records.
• Accounts & Finance: Monitor outstanding invoices and follow up with debtors.
• Accounts & Finance: Assist bank reconciliations and account balances.
• Accounts & Finance: Track expenses, receipts and other transactions.
• Accounts & Finance: Support fortnightly payroll processing and timesheet admin.
• Accounts & Finance: Prepare basic financial reports and spreadsheets.
• Accounts & Finance: Maintain up-to-date financial documentation.
• General Administration: Manage office correspondence, emails and phone inquiries.
• General Administration: Maintain electronic and physical filing systems.
• General Administration: Assist staff records, onboarding and HR administration.
• General Administration: Coordinate meetings and appointments.
• General Administration: Provide admin support to management and teams.
• General Administration: Maintain employee and client documentation.
• General Administration: Support day-to-day office operations.

Skills

Attention to detail

Organisational skills

Numerical accuracy

Communication skills

Time-management

Teamwork

Proactive attitude

Independent work

Education

Bachelor's or Master's in Accounting/Finance

Tools

Excel

Word

Outlook

Job description

Accounts & Administration Assistant - Full Time

One-Step Marketing & Promotions – Sydney CBD NSW

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.
• Professional 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.