The Role 


Due to our continued growth, we are currently seeking a Senior Estimator based in our modern office in Welshpool. Reporting to the Civil Estimating Manager, the Senior Estimator will have a lead role in the bidding process from tender authority, site visits, cost estimation, construction methodology, client meetings and tender handover.


Secure your future with WA’s number 1 Contractor


MACA is a leading integrated contracting services group specialising in mining, civil construction, infrastructure, and mineral processing.

We strive to be the best by investing in our people, understanding our clients' needs, and having a relentless focus on continuous improvement. Our social responsibility is what drives us, and we make an impact through contributions and support we give our communities.


For this position you should have the following qualities


  • A degree qualification in engineering, construction management or quantity surveying
  • Experience in “first principle” estimating using EXPERT Estimation software.
  • 7+ years experience in Estimator / Senior Estimator roles for Civil Contractors in Australia, preferably WA.
  • Experience in bulk earthworks and civil projects for Western Australian resource clients.
  • Experience in MRWA projects (roads and bridges) is favourable but not essential.
  • Experience in Pronamics P6 is favourable but not essential.
  • Ability to identify commercial and technical risk and provide input to tender submissions
  • Strong ability in analysing estimates and develop innovative solutions to refine estimates
  • Proven ability in time management and bidding concurrent tenders with delegation or outsourcing of bid components
  • Excellent knowledge of bidding and tendering processes


What we will offer you:



  • Culture - People are the key to the success of MACA, and we back that up with support of each person to be successful in their role and also to give opportunities to progress to more responsibility.
  • Variety – MACA is the leading Mining/Civil contractor in Australia – you will be supporting all manner of projects across the country.
  • Benefits – A very competitive salary – plus a large suite of salary sacrificing options through a third-party provider and a range of corporate discounts.
  • Cycle to work at MACA HQ? – Receive a daily allowance.


There are many long-term opportunities available across our business, and more on the horizon. There is always room to grow and develop into the professional you want to be with MACA!

We offer all this and more, Because We Care.


If you want to come with us on our journey, apply with us today!


We’re ready when you are.


MACA is an equal opportunity employer and strongly encourages all females and Aboriginal and Torres Strait Islander applicants.