Mine Planner

The role

The Senior Mine Planner will lead strategic mine planning, opportunity evaluation, and long-range optimization across the company portfolio. This role defines how mines are evaluated, designed, sequenced, and optimized from early-stage concept through life-of-mine planning.

What you will do

• Lead technical mine planning input for project screening and portfolio-level decision making
• Develop high-level mine concepts, production profiles, and sequencing options
• Partner with geology, metallurgy, and commercial teams to evaluate trade-offs
• Own and develop long-range mine plans to maximize NPV and strategic optionality
• Perform multi-pit optimization, phase sequencing, and cutback strategy development
• Define and maintain company-wide standards and methodologies for mine planning
• Review and challenge mine plans produced by internal teams and external consultants
• Work with geology, geotechnical, processing, infrastructure, and operations teams
• Mentor and guide mine planners and engineers across the company
• Contribute to the development of internal tools, templates, and workflows

Required qualifications

• Bachelor’s degree in Mining Engineering or a closely related field
• 5+ years of mine planning experience
• Expertise in pit optimization, phase design, sequencing, and economic trade-off analysis
• Proficiency with modern mine planning and optimization tools (e.g., Deswik, Whittle, Vulcan, MinePlan, Leapfrog)
• Experience evaluating complex, multi-pit or multi-deposit mining projects
• Ability to think at both the technical and strategic level
• Strong communication skills
• Professional Engineer (P.Eng or equivalent), or eligibility

Nice to have

• Master's degree
• Experience working in fast-moving, project-driven or greenfield environments
• Experience supporting early-stage studies (conceptual, PEA, PFS, FS) and corporate-level project evaluations

About the company

Mariana Minerals is a software-first, vertically integrated minerals company. They aim to supply critical minerals for energy, AI, and defense technologies by combining industry expertise with advanced software and automation.