Principal Mining Estimator

Principal Mining Estimator Job ID: 931661

Job Type: Permanent Full Time

Location: Australia - Perth

Categories: Estimating

Applications close: 26 Oct 2025

W. Australia Standard Time

Grow your career with Thiess As a global business we are proud to offer diverse and rewarding career opportunities. We are committed to Thiess being a company which supports great people to succeed develop their careers and feel supported to reach their highest potential. We offer a safe and inclusive work environment where our employees feel strongly connected to our values and objectives and where the capability of our people is key to our success.

About the role Thiess is seeking a Principal Mining Estimator to join our team based out of our West Perth office. This pivotal role is responsible for delivering accurate and innovative estimating and costing services to support the tendering of new mining projects. You will also apply these practices to existing operations to drive continuous improvement enhance operational efficiency and strengthen the financial performance of our business.

Duties include but are not limited to

Deliver accurate detailed and timely estimates for new mining project tenders.

Apply estimating and costing expertise to current operations to improve financial and operational performance.

Ability to analyse each mining operation as a system and determine the critical value drivers and devise a strategy which maximises return from both a Thiess and a Client (where possible) perspective. Ability to apply this analysis across the business concurrently.

Preparation of data for reviews of all critical mine engineering inputs and reconcile actual vs planned performance.

Participation in development of mine design and scheduling process documents and seek feedback / review through mine planning COP.

Participation in regular meetings to address ongoing mine planning methodologies software tools and strategies

Coach and mentor junior mine estimators

About You

Tertiary qualified in a relevant technical discipline (e.g. Mining or Civil Engineering)

Minimum 5 years experience in a senior level mine estimating role

Have a strategic and innovative approach to problem solving and ability to define critical value drivers (cost and revenue) in an operation

Previous cost estimating and contract management experience

Well-developed analytical verbal and written communication skills

Good time management skills with the ability to meet tight deadlines and shifting priorities

Strong estimating software experience with CATS highly regarded

Ability to undertake regular visits to projects and engagement with project technical staff

What Thiess can do for you

Flexible working arrangements

World‑class health & wellbeing programs

Salary sacrifice options

A range of corporate discounts including health insurance (Medibank), travel & retail products

About us At Thiess we partner with our clients to deliver excellence in open cut and underground mining in Australia, Asia and the Americas. For more than 90 years we have operated in diverse commodities, geologies, environments and cultures. Our team uses global insight to optimise solutions and create value for each project, positioning them for optimal efficiency, productivity and cost performance backed by how we meet our commitments. Thiess is committed to being at the forefront of sustainable mining, leveraging the power of our people and technology to support clients in their journey to more sustainable enterprises.

We recognise the value of an inclusive and diverse workplace through our vision that everyone matters always. We are focused on creating an inclusive environment for all our people.

We welcome and celebrate the differences and similarities among people including gender identity, ethnicity, race, heritage, sexual orientation, disability, age, culture, religion, language, appearance, parental status and education.

If you require assistance to apply for this job because of disability or special needs please contact us here.

How to Apply This role is an opportunity to take the next step in your career. With our culture of recognition, development and a stimulating and satisfying work environment there is no better time to join Thiess.

To apply for this role please click the Apply button or the link below.

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