Provide independent cost assurance and commercial insight that strengthens investment decisions across Rio Tinto's portfolioInfluence major investment approvals, governance outcomes and portfolio planning while partnering with senior stakeholders and delivery partnersA Brisbane or Perth based opportunity, working within a team-oriented and values-driven environmentWe're Finding Better Ways to provide materials the world needs, now and in the future.
Our values – care, courage and curiosity – guide how we work and how we treat each other.About the roleWe are looking for a Senior Specialist Cost Estimator to help the Enterprise Project Management Office (ePMO) deliver robust investment planning, governance and decision-making.In this role, you will provide independent cost and commercial expertise to validate vendor-provided estimates, pricing structures and commercial assumptions, ensuring investment decisions are transparent, defensible and aligned to business objectives.This is an excellent opportunity for someone who enjoys influencing complex decisions, applying commercial judgement and partnering with a broad range of stakeholders across major initiatives.What you'll be doingReporting to the Senior Manager of Delivery within the ePMO, and working in a collaborative project environment, you will:Validate vendor-provided cost estimates, pricing structures and commercial assumptions for accuracy, completeness and alignment to agreed scope and delivery modelsAssess cost drivers, estimation methodologies and key assumptions to support informed investment and portfolio decisionsProvide independent challenge and cost assurance, identifying risks, opportunities, affordability concerns and estimation biasSupport investment approvals, governance forums and stage-gate reviews with high-quality cost assurance insightsEnsure estimates meet defined standards for quality, transparency and evidence before progressing through governance processesPartner with project sponsors, commercial teams, procurement, finance, project controls and delivery partners to validate assumptions and improve cost confidenceHighlight commercial implications,



pricing risks and potential cost exposure early in the lifecycle of initiativesIdentify recurring estimation issues and systemic inefficiencies to improve portfolio-wide cost visibility and forecasting capabilityRequired for SuccessA commitment to the safety of yourself and your teamAdvanced expertise in cost estimating, commercial analysis, investment planning, governance and risk management, with the ability to independently review and challenge complex estimates and proposalsDemonstrated experience validating third-party cost estimates, reviewing commercial proposals and providing cost assurance within mining, resources, infrastructure, technology delivery or other large-scale capital environmentsA tertiary qualification in Project Management, Finance, Commerce or a related discipline.
Professional estimating or cost engineering certification (such as AACE, ICEC or equivalent) is desirableExperience applying structured estimation methodologies, financial analysis, governance frameworks and project controls practices to support investment decision-makingHelpful for SuccessExperience working with delivery partners, suppliers and contract management teams in complex delivery environmentsKnowledge of portfolio, programme and project governance processes and stage-gate approval frameworksExposure to enterprise transformation, digital, technology or major capital investment portfoliosAbility to build constructive stakeholder relationships while maintaining independence and objectivityWhat we offerBe recognised for your contribution, your thinking and your hard work, and go home knowing you've helped the world progress.A work environment where safety is always the number one priorityA permanent position working directly for Rio TintoA competitive base salary reflective of your skills and experience with annual incentive programComprehensive medical benefits including subsidised private health insurance for employees and immediate familyAttractive share ownership planCompany provided insurance coverExtensive salary sacrifice & salary packaging optionsCareer development & education assistance to further your technical or leadership ambitionsOngoing access to family-friendly health and medical wellbeing supportLeave for all of life's reasons (vacation/annual, paid parental, sick leave)Exclusive employee discounts (banking, accommodation, cars, retail and more)Where you'll be workingThe Enterprise PMO (ePMO) supports the delivery of Rio Tinto's strategic enterprise projects through portfolio oversight, and commercial governance of key supplier partners.
Working across a diverse portfolio with strategic suppliers and service providers, the team helps strengthen commercial performance, improve delivery confidence and ensure contractual commitments are effectively managed to deliver value for the business.About Rio TintoRio Tinto is a leading global mining and materials company.
We operate in 35 countries where we produce iron ore, copper, aluminium, critical minerals, and other materials needed for the global energy transition and for people, communities, and nations to thrive.We have been mining for 150 years and operate with knowledge built up across generations and continents.
Our purpose is finding better ways to provide the materials the world needs – striving for innovation and continuous improvement to produce materials with low emissions and to the right environmental, social and governance standards.
But we can't do it on our own, so we're focused on creating partnerships to solve problems, create win-win situations and meet opportunities.Respect and InclusionAt Rio Tinto, we particularly welcome and encourage applications from Aboriginal and Torres Strait Islander people, women, the LGBTQ+ community, mature workers, people with disabilities and people from different cultural backgrounds.We are committed to an inclusive environment where people feel comfortable to be themselves.
We want our people to feel that all voices are heard, all cultures respected and that a variety of perspectives are not only welcome – they are essential to our success.
We treat each other fairly and with dignity regardless of race, gender, nationality, ethnic origin, religion, age, sexual orientation or anything else that makes us different.
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📌 Senior Specialist Cost Estimator (Tasmania)
🏢 Riotinto
📍 Tasmania