Principal Geologist, Resource Modeller

Job Purpose

The Principal Resource Geologist, Modelling and Geostatistics is responsible for providing corporate-level technical leadership in geological modelling and geostatistics across all BMNM assets. The role strengthens in-house capability in Mineral Resource estimation, uncertainty analysis, and risk-based decision-making, supporting Ma’aden’s expanding exploration portfolio and resource development pipeline.

This position reduces reliance on external consultants by internalizing advanced geostatistical methods, including conditional simulation and uncertainty quantification, ensuring that Mineral Resource estimates are robust, consistent, and aligned with business planning needs.

Key Accountabilities

Resource Modelling & Estimation

• Lead and review geological and grade modelling for Mineral Resource estimates across BMNM assets.

• Ensure consistent application of estimation methodologies, domaining strategies, and validation practices.

• Provide technical oversight of consultant- and site-generated resource models.

Geostatistics & Uncertainty Analysis

• Apply advanced geostatistical techniques, including variography, kriging, and conditional simulation.

• Quantify uncertainty and risk associated with Mineral Resource estimates.

• Support decision-making by translating uncertainty into practical guidance for mine planning and project evaluation.

Support to Resource Classification & RPEE

• Work closely with RPEE, structural geology, and QA/QC principals to ensure resource models reflect realistic extraction scenarios.

• Support Mineral Resource classification through robust confidence and risk assessment.

• Contribute to sensitivity analysis and scenario testing for development studies.

Exploration & Resource Development Support

• Support exploration teams by defining drilling strategies that reduce uncertainty and improve model confidence.

• Assist with early-stage resource modelling for new discoveries and growth projects.

• Provide technical input into project evaluations, scoping studies, and long-term planning.

Governance & Standardization

• Define standards, workflows, and best practices for resource modelling and geostatistics across BMNM.

• Ensure all models are auditable, well-documented, and reproducible.

• Support internal reviews, audits, and technical governance processes.

Capability Building

• Mentor resource geologists and geostatisticians across the organization.

• Develop training material and internal guidance on geostatistics, simulation, and uncertainty analysis.

• Build sustainable in-house expertise and reduce long-term dependency on consultants.

Minimum Qualifications, Experience and Competencies

Minimum Qualifications:

 Bachelor’s degree in Geology or Earth Sciences.

 Postgraduate qualifications in Geostatistics, Mining Geology, or related disciplines are highly desirable..

 Experience with resource governance frameworks, audit processes, and database systems (Acquire preferred).

 Recognized as (or eligible to be) Competent Person under JORC/CRIRSCO.

Minimum Experience:

 10+ years’ experience in Mineral Resource estimation and geostatistics.

 Strong experience with geostatistical tools and software (e.g. Isatis, Datamine, Leapfrog, Vulcan, or equivalent).

 Proven experience applying conditional simulation and uncertainty analysis in a mining context.

 Experience reviewing or delivering consultant-led resource models.

Ma’aden High Performance Competencies:

Skills:

 Advanced geostatistical reasoning and 3D geological interpretation.

 Strong understanding of uncertainty and risk in Mineral Resource estimation.

 Ability to clearly communicate technical concepts to non-specialist stakeholders.

 High level of technical rigor and governance mindset.