Contract Administrator

Waltrix & Co; Sydney; On-site; AUD 90,000 - 120,000; Full time

Job summary

Waltrix & Co in Western Sydney is seeking a Contracts Administrator or Senior Contracts Administrator to join the delivery team on a major recycled water infrastructure project. You will work closely with Project Managers, Engineers and contractors on site.

The role focuses on day-to-day commercial and contract administration across two main contracts, including payment schedules, variations, notices, and registers, while ensuring compliance with AS 4000 and the Security of Payment Act.

Qualifications

• Experience as a Contracts Administrator on construction or infrastructure projects.
• Strong knowledge of Australian standard-form contracts, ideally AS 4000.
• Knowledge of the Security of Payment Act.
• Experience with variations, EOTs, claims, payment schedules and contractual notices.

Responsibilities

• Preparing and issuing payment schedules
• Assessing variations, EOTs and contractor claims
• Preparing contractual correspondence and notices
• Maintaining commercial and contractual registers
• Monitoring programmes, milestones and key contractual dates
• Supporting Project Managers and Superintendents on commercial matters
• Coordinating with the wider project team to ensure contractual obligations are being met
• Supporting commercial reporting and project record keeping
• Escalating complex claims and contractual issues to the Commercial Manager

Skills

Contracts administration

AS 4000

Security of Payment Act

Variation management

Contract claims

Site delivery

Education

Engineering

Construction Management

Quantity Surveying

Commerce

Law

Job description

Contracts Administrator / Senior Contracts Administrator

Major Water Infrastructure | Western Sydney

An opportunity has become available for an experienced Contracts Administrator to join the delivery team on a major recycled water infrastructure project in Western Sydney.

Working as part of an experienced project and commercial team, you will be responsible for the day-to-day commercial and contract administration across two major works contracts.

This is a hands‑on, site‑based position suited to someone who enjoys being close to project delivery and working directly with Project Managers, Engineers, Superintendents and contractors.

The Project

The project involves the expansion of a major recycled water facility supporting new infrastructure in Western Sydney.

The scope includes:

• DN800 recycled water transfer main
• Booster Pump Station
• Existing network upgrades
• Control system and SCADA integration
• Testing and commissioning

The Role

Reporting to the Commercial Manager, you will support the commercial management and administration of two Main Contracts throughout project delivery.

Your responsibilities will include:

• Preparing and issuing payment schedules
• Assessing variations, EOTs and contractor claims
• Preparing contractual correspondence and notices
• Maintaining commercial and contractual registers
• Monitoring programmes, milestones and key contractual dates
• Supporting Project Managers and Superintendents on commercial matters
• Coordinating with the wider project team to ensure contractual obligations are being met
• Supporting commercial reporting and project record keeping
• Escalating complex claims and contractual issues to the Commercial Manager

About You

We are looking for someone with:

• Experience as a Contracts Administrator or Senior Contracts Administrator on construction or infrastructure projects
• Strong knowledge of Australian standard-form contracts, ideally AS 4000
• Working knowledge of the Security of Payment Act
• Experience with variations, EOTs, claims, payment schedules and contractual notices
• Strong written communication and attention to detail
• The ability to work closely with engineering, project and commercial teams
• Experience across water, utilities, civil or process infrastructure
• The ability to work on site full‑time in Western Sydney

A qualification in Engineering, Construction Management, Quantity Surveying, Commerce or Law would be highly regarded.

The Opportunity

This is an opportunity to join a significant infrastructure project from within the delivery team and work alongside experienced commercial and project professionals.

Location: Horsley Park / Smithfield, Western Sydney

Employment: Full‑time, 5 days per week on site

If you have a strong contracts background and want to be involved in the delivery of a major Western Sydney infrastructure project, we would like to hear from you.