Subcontracts Admin

Position Information

• Ref #: 300049286
• Region: Perth, WA
• Classification: Professionals
• Date Posted: 01-May-2026

About the Role

As a Subcontracts Administrator, you’ll be central to project delivery - managing subcontractor relationships, driving commercial outcomes, and ensuring contracts are administered effectively from award through to closeout. This is a fast-paced, high-volume environment where your ability to prioritise, problem-solve, and work autonomously will be key to success.

What’s On Offer / Benefits

• Full-time, Monday to Friday role based in Victoria Park
• Ongoing training, career development, and structured performance plans
• Active social club with monthly events, lunches, and discounts
• Exposure to high-profile, large-scale projects
• Strong focus on safety, wellbeing, and team culture

Key Responsibilities

• Manage subcontract packages across the full lifecycle - procurement, award, administration, and closeout
• Prepare and administer subcontracts, including scope reviews, negotiations, and execution
• Monitor subcontractor performance, progress, and compliance with contractual obligations
• Manage variations, claims, EOTs, and commercial correspondence (RFIs, TQs, SIs, Change Orders)
• Support cost control, forecasting, and reporting in collaboration with project teams
• Ensure accurate documentation, record keeping, and contract compliance
• Liaise with internal stakeholders and subcontractors to drive project outcomes

What you’ll bring

• 3-5+ years’ experience in Contracts/Subcontracts Administration within the resources sector (Tier 1 contractor experience preferred)
• Strong exposure to SMP, E&I, fabrication, or heavy lift scopes
• Solid understanding of contract law and its application within mining and oil & gas
• Experience across various contract models (lump sum, schedule of rates, cost reimbursable, etc.)
• Ability to manage multiple work fronts in a fast-paced environment
• Strong communication, negotiation, and stakeholder management skills
• Degree in Business, Law, Engineering, or Quantity Surveying (desirable, not essential)
• Flexibility to provide occasional coverage for site-based teams if required

Life at Monadelphous

There’s lots to get involved in, celebratory or cultural events and so much more. We work hard to make Monadelphous a truly great place to work.

We celebrate our diversity and shared values and are committed to inclusion and equal opportunities for all. We’re committed to hiring locally, encourage people of all diverse backgrounds to apply and strongly encourage women and First Nations people to submit an application.

About us

Monadelphous is an ASX-200 company providing multidisciplinary construction, maintenance and industrial services to many of the largest companies in the resources, energy and infrastructure sectors. Established in 1972, we’ve been working in Australia and around the world for more than 50 years. We work on the biggest projects and ensure our teams have a variety of opportunities available to follow their career path of choice.

Safety is at the forefront of everything we do, and we live by our promise: The Safe Way is the Only Way. Apply now to get started. A career at Monadelphous is a career with a difference. Make it yours.

How to Apply

Apply now to get started. A career at Monadelphous is a career with a difference. Make it yours.