Principal Engineer, Metallurgy

The Principal Metallurgist is the technical authority (SME) for metallurgy aspect, responsible for

leading metallurgical inputs across the full project lifecycle, from early business case evaluation

through feasibility study (FS) and into execution readiness

Provide metallurgical input into project screening, concept evaluation, and business case development, including value drivers, recovery assumptions, process routes, and economic model inputs (recovery, throughput, CAPEX/OPEX)

Identify key metallurgical risks, opportunities, and trade-offs to support informed decision-making

Define initial process options, conceptual flowsheets, recovery assumptions, and mass balances during scoping stage, while overseeing preliminary metallurgical testwork programs and developing the initial risk register

Lead advanced laboratory testing and variability analysis during PFS, including defining grind size, comminution parameters, and recovery processes (flotation, leaching, gravity)

Develop preliminary process design criteria, base flowsheets, mass balances, and support trade-off studies and process optimization

Direct pilot-scale and variability test work programs during FS/BFS and finalize process design criteria, equipment sizing, specifications, water and metallurgical balances

Approve final flowsheets and design basis, ensuring alignment with investment and financing requirements

Provide inputs to capital and operating cost estimates and define BFS-level design parameters and risk mitigation measures

Design and oversee end-to-end metallurgical test work strategy, including sample selection, compositing, laboratory and pilot programs

Ensure data quality, QA/QC, traceability, and alignment of test work with project decision gates

Interpret and validate metallurgical results for integration into flowsheet and process development

Support and guide processing methodologies including refractory, CIL, flotation, and heap leach, while leading investigations to improve efficiency and align with organizational strategy

Coach and mentor metallurgical personnel and support optimization initiatives to enhance competitive advantage

Ensure compliance with company and site policies, standards, and procedures, recommending improvements where required

Provide technical support in metallurgy and processing engineering across affiliates, contributing to development, improvement, and effectiveness of corporate policies and standards

Support interpretation and implementation of standards, and assist corporate SME teams in aligning technical practices

Contribute to technical communications including incident briefings, programs, initiatives, and periodic updates aligned with corporate policies across multiple channels

Perform additional duties as assigned by management

Bachelor s degree in metallurgical, Minerals/Chemical Engineering.

Project management experience.

Minimum 20 years of experience in metallurgical operations, engineering, and laboratory environment related to gold and base metal extraction processes.

Generic Maaden behavioral competencies required:

Teamwork & collaboration

Analytical thinking

As technical services functional leader, Principal Engineer, Metallurgy position shall be the champion of change for improvement in all aspects of metal processing but not limited to existing operation and growth study.

This position is responsible to deliver in quality and timely manner resources model with consultation with other functional within technical services, Operational leadership and Corporate.

Knowledge of life-of-mine planning including budgeting and metal planning.

Knowledge of Metallurgical Accounting Standard.

Experience with plant control systems and use of data historian trends for operating and reporting.

Ability to present to and collaborate with corporate executives and the site Senior Leadership Team required

Strong computer skills and proficiency in Microsoft Office (Word, Excel, Outlook, PowerPoint, and Access) required

Knowledge in Safety requirements.

Ability to work in a multi-cultural environment

Principal Engineer, Metallurgy role needs to communicate frequently within all internal and external stakeholders for all matters related to Metallurgy and Process Engineering.