McMahon Services is looking for a motivated and commercially minded Contracts Administrator to join our Civil & Infrastructure team in Adelaide. This is a great opportunity for someone with at least two years' experience in construction contract administration who enjoys working closely with project teams, managing contractual requirements and finding practical solutions. You'll be involved in contract reviews, subcontractor agreements, commercial reporting, contractual notices and claims, supporting the successful delivery of civil and infrastructure projects. We're particularly interested in candidates who have experience with collaborative head contract procurement models, including ITC, and are confident preparing contractual correspondence and notices. About McMahon Services McMahon Services is one of Australia's largest privately owned construction, industrial and environmental services organisations, employing more than 1,300 people across Australia. Our Civil & Infrastructure team delivers a diverse range of projects, including civil construction, roads, bridges, earthworks and infrastructure works. With solid self-performing capabilities across our business, we take pride in the projects we deliver and the people behind them.

We offer
a supportive environment where employees can develop their skills, take on new challenges and build long-term careers.

About the Role
Reporting to the T2D Commercial Manager, you'll support the effective administration of contracts and commercial processes across our Civil & Infrastructure projects. Working closely with internal Construction Managers, Project Managers, Finance Managers, Legal and the customer, you'll help manage head contracts, subcontractor agreements, contractual notices, claims and commercial reporting.



The role will also involve preparing upstream and downstream contractual correspondence, supporting collaborative procurement arrangements and assisting with the management of commercial risks throughout project delivery.

What You'll Do
- Interpret executed contracts to verify risk allocation, entitlement and obligations.
- Monitor compliance with contractual obligations, processes and approval requirements.
- Lead commercial progress coordination meetings (internal/customer)
- Track and monitor commercial KPI’s and develop reports
- Administration of collaborative head contract procurement models, including ITC arrangements.
- Draft and manage general contractual notices, both upstream to clients and downstream to subcontractors.
- Prepare cost build-ups and supporting evidence for variations, drawing on site diaries, labour and plant records, subcontractor costs and measured quantities.
- Manage extensions of time (EOTs), variations, delay costs and latent condition claims.
- Maintain change and claims registers, tracking contractual deadlines, submission status, outstanding assessments and agreed close-out actions.
- Assist with monthly project reporting and commercial meetings.
- Reconcile general ledger costs, payment claims and client assessments at transaction and package level
- Prepare contract summaries and maintain accurate commercial documentation.
- Maintain change and claims registers, tracking contractual deadlines,



submission status, outstanding assessments and agreed close-out actions.
- Work closely with Project Managers and Legal teams to identify and manage contractual risks.
- Support monthly project reporting and commercial review meetings.
- Reconcile general ledger costs, payment claims and client assessments at transaction and package level
- Assist with commercial risk management, disputes and claims as required.
- Maintain strong working relationships with clients, subcontractors, suppliers and internal stakeholders. What You'll Bring
- Experience working with collaborative head contract procurement models, particularly ITC.
- Minimum 5-years working within the construction sector, and 3-years' experience in a Contracts Administrator role.
- Degree qualification in Engineering, Construction Management, Business, Law or a related discipline.
- Sound understanding and exposure to various procurement and delivery models, construction contract forms, commercial processes and project administration.
- Ability to interpret utility and civil construction drawings and quantify changes in scope to support remeasurement and cost assessment.
- Experience drafting general contractual notices and correspondence for both upstream and downstream stakeholders.
- Experience reviewing contracts, managing subcontractor agreements and preparing contractual documentation.
- Strong commercial awareness and attention to detail.
- Excellent written and verbal communication and negotiation skills.
- Ability to manage competing deadlines and work collaboratively with project teams.
- Strong problem-solving and organisational skills.
- Proficiency in Microsoft Office, including MS Project.
- Experien

📌 Senior Contract Administrator (Adelaide)
🏢 Mcmahon Services
📍 Adelaide