Illumine is partnering with a major developer delivering multi-billion-dollar hyperscale data center infrastructure across Asia Pacific. We are seeking a Senior Cost Manager to join the client’s commercial and development team on a long-term contract, supporting cost governance, supplier engagement and project controls across one of the fastest-growing sectors in the country.

This role is highly rewarding, acting as the conduit between the client and consultants, ensuring cost discipline, commercial clarity and smooth workflows across a complex, high-growth portfolio. You will work closely with senior leadership, project managers, design teams and external partners, contributing directly to the successful delivery of major capital projects.

Why Apply

- Work with a major hyperscale developer shaping Australia’s digital infrastructure.
- Be embedded in a multi-billion-dollar project environment with genuine scale and complexity.
- Act as the central commercial link between client and suppliers; high visibility, high impact.
- Join a high-growth industry with opportunity for professional growth.
- Enjoy a supportive, collaborative office culture with strong leadership and clear direction.
- Attractive long-term contract.

Key Responsibilities

- Lead cost planning, cost reporting and cost governance across major capital works.




- Manage cost estimates, budgets, forecasts and financial modelling for hyperscale development.
- Review, challenge and validate supplier pricing, variations, claims and commercial submissions.
- Maintain cost registers, dashboards and project controls documentation with high accuracy.
- Support procurement strategy, tender evaluation and commercial negotiations.
- Coordinate workflows between client teams, suppliers, consultants and contractors.
- Prepare transparent, high-quality commercial documentation, reports and presentations.
- Drive consistency, discipline and transparency across cost processes and commercial governance.

About You

- Senior Cost Manager or Cost Engineer with experience in infrastructure, data centers, utilities or large-scale construction.
- Strong capability in cost planning, estimating, forecasting and financial modelling.
- Confident communicator able to manage suppliers, challenge assumptions and maintain strong relationships.
- Highly organized, process-driven and comfortable managing multiple workflows.
- Skilled in cost systems, registers, dashboards and commercial reporting tools.
- Able to produce polished, client-ready documentation with clarity and precision.

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📌 Senior Cost Manager (Melbourne)
🏢 Illumine Consulting
📍 Melbourne