We are seeking an experienced and motivated Billing Officer to join the team at CSA Specialised Services (CSA), part of Waste Services Group (WSG), based in Coopers Plains.

This is a full-time, office-based position, with standard working hours of 7:30 am to 3:30 pm. Some flexibility around start and finish times are available after the initial training period.

This is a temporary opportunity with an initial commitment of at least three months and no confirmed end date. You will play an important role in ensuring accurate and timely customer billing while working closely with internal teams across the business.

This position is ideal for someone who enjoys working with numbers, solving problems and managing competing priorities in a fast-paced operational environment. You will need to be comfortable working independently, making informed decisions and communicating confidently with stakeholders at all levels.

Key Responsibilities

• Prepare, process and distribute high volumes of customer invoices accurately and within required timeframes.

• Review billing information, customer rates, quotes and supporting documentation to ensure invoice accuracy.

• Use Microsoft Excel to analyse data, check pricing and support billing activities, including pivot tables and VLOOKUPs.

• Manage customer enquiries, investigate billing discrepancies and resolve invoicing issues in a timely and professional manner.

• Work closely with Sales, Accounts Payable, Operations and Credit teams to ensure accurate billing outcomes.

• Monitor and respond to enquiries received through the billing email inbox.

• Maintain accurate, organised and confidential billing records.

• Assist with ad hoc reporting and other accounts-related tasks as required.

• Manage fluctuating workloads and competing priorities while meeting month-end deadlines.

• Identify opportunities to improve billing processes and operational efficiency.

About You

• Approximately 3–5 years of experience in billing, accounts receivable or a similar finance-related role.

• Strong Microsoft Excel skills, including practical experience with pivot tables and VLOOKUPs.

• A sound understanding of billing principles, invoice calculations and GST.

• Strong numerical skills and exceptional attention to detail.

• The ability to analyse information, solve problems and make independent decisions.

• Excellent written and verbal communication skills, with the confidence to liaise with stakeholders across different levels of the business.

• Strong organisation and time management skills, with the ability to work under pressure and meet deadlines.

• A positive, adaptable attitude and the ability to learn new systems and processes quickly.

• A collaborative mindset and a willingness to support other accounts team activities when required.

• Experience with accounts receivable systems, customer billing portals or project-based billing will be highly regarded.

What We Offer

• The opportunity to join an established organisation within the waste services industry.

• A varied and hands-on role with direct involvement in business operations.

• Ongoing training and support to help you learn the company's billing systems and processes.

• The opportunity to collaborate with a range of internal stakeholders and contribute to continuous improvement.

• A temporary assignment with an initial commitment of at least three months and no confirmed end date.