Hermanas Engineering is an owner-side engineering and project delivery consultancy — closing the gap between technically sound studies and assets that are practically executable, and operationally ready from day one.
Explore our services Start a conversationFounded by senior practitioners with decades of hands-on delivery, our team has led major capital projects from pre-feasibility through commissioning and handover — across complex multi-contract environments on tier-one developments including Roy Hill, FMG's T155 Expansion, Newcrest Telfer, Iluka Resources and Boddington.
At our core is technical expertise applied to investment decisions — deep process knowledge and flowsheet development turned into robust business cases, so businesses can commit capital with confidence and deliver the value the case promised.
We sit on your side of the table — no engineering hours to sell, no equipment to supply. Our only deliverable is a project that executes and an asset that performs.
We plan projects backwards from first production, so studies and execution plans are built around how the asset will actually be tested, started and ramped up.
Every engagement is led by people who have commissioned real plants — from control rooms and mill floors, not from a distance.
One team across strategy, studies, execution, commissioning and handover — no lost knowledge at phase gates, no reinvented plans mid-project.
Click any service for the detail — what it covers, what you receive, and when to bring us in.
Independent technical advisory, study delivery and execution excellence — our study governance and estimating practice follows AACE and AusIMM guidance, so every gate deliverable stands up to scrutiny by boards, lenders and independent reviewers.
Engineering, commercial, commissioning and operations-readiness considerations are integrated from the outset — so preferred options are not only economically attractive but genuinely executable.
Senior roles inside your project team — scaling with phase.
Defined deliverables — commissioning strategies, OR frameworks, contract strategy, completions systems.
Independent peer reviews, constructability, operability and commissioning-readiness reviews at study gates.
Hands-on commissioning and start-up teams — protocols and systemisation through ramp-up and handover.
Behind the directors sits a trusted network of senior specialists — commissioning, environment & permits, project controls and site administration — scaled to each project's phase.
Electrical and control systems engineer with 29 years delivering major mining and infrastructure projects. Bridget has directed complex commissioning scopes, governance frameworks and structured handovers on landmark developments, with eight years' professional experience across Latin America including Chile and Peru.
Key projects: Roy Hill · FMG T155 Expansion · Iluka Resources · Newcrest Telfer
Extractive metallurgist with an MBA in finance and business leadership, and 29 years across technical, operational and leadership roles. Sarah has led Class 3, 4 and 5 estimates, directed major studies and commissioned complex processing circuits, previously serving as General Manager — Technical Services at Ardea Resources and Study Director at HanRoy.
Key roles: Roy Hill · Iluka · Ardea Resources (GM Technical Services) · HanRoy (Study Director)
Over 30 years of practical experience in mineral processing, commissioning and plant operations across Australia, Africa and Latin America — plant operator and mill supervisor through to Commissioning Lead on complex greenfields projects, with deep knowledge of comminution and flotation circuits.
Key projects: Roy Hill · FMG · Boddington · Pilbara Minerals
Whether you're shaping a study, approaching an investment decision, or preparing to commission — the biggest gains are made early. Bring us in when the decisions are still cheap to change.
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