Senior Estimator – Mining & Process Plant Projects

KBR, Inc.; Adelaide; On-site; AUD 180,000 - 260,000; Full time

Job summary

KBR is seeking a Lead Estimator in South Australia to own estimating for a major resources and mining project spanning copper, minerals and process plant development. You will lead cost estimation activities, review subcontractor quotes, and drive value assurance with delivery teams and clients.

The role requires senior leadership, deep understanding of estimating methodologies, and ability to mentor junior estimators while managing multiple project phases to deliver transparent cost outcomes.

Qualifications

• Bachelor's degree in a relevant discipline.
• Extensive estimating experience in resources/mining.
• Leadership ability to mentor estimators.
• Knowledge of cost assurance and value-for-money principles.

Responsibilities

• Lead the estimating function for a major resources project.
• Oversee first-principles reviews of contractor cost estimates.
• Validate methodology, risk & opportunity, and schedule.
• Recommend contractor awards and cost adjustments.
• Engage with internal teams and clients to confirm value outcomes.
• Manage estimating workflows and approvals across phases.
• Develop and review estimates across AACEI classes 5 to 2.
• Interpret technical specs to assess cost implications.
• Lead preparation of subcontractor and supplier quotations.
• Deliver tender handovers with Basis of Estimates.
• Drive continuous improvement in estimating tools.
• Facilitate change management and trend analysis.

Skills

Leadership

Estimating software

Analytical thinking

Stakeholder communication

Cost management

Education

Bachelor’s degree in Engineering, Quantity Surveying, Construction Management or related

Tools

Estimating software

Job description

KBR is seeking a Lead Estimator in South Australia to own estimating for a major resources and mining project spanning copper, minerals and process plant development. You will lead cost estimation activities, review subcontractor quotes, and drive value assurance with delivery teams and clients.

The role requires senior leadership, deep understanding of estimating methodologies, and ability to mentor junior estimators while managing multiple project phases to deliver transparent cost outcomes.