Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies. Backed by Khosla and a16z.
About the role
Mariana Minerals is looking for a highly motivated Senior Mine Planner to lead strategic mine planning, opportunity evaluation, and long-range optimization across the company’s portfolio of mining projects. This role is responsible for defining how mines are evaluated, designed, sequenced, and optimized—from early-stage concept evaluation through life-of-mine planning.
What they're looking for
- Bachelor’s degree in Mining Engineering or a closely related field (Master’s preferred)
- 5+ years of mine planning experience, with a strong emphasis on long-range planning, optimization, and strategic evaluation
- Demonstrated expertise in pit optimization, phase design, sequencing, and economic trade-off analysis
- Strong 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, connecting mine plans to capital decisions and long-term value creation
More about this role
Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.
Mariana Minerals is looking for a highly motivated Senior Mine Planner to lead strategic mine planning, opportunity evaluation, and long-range optimization across the company’s portfolio of mining projects. This role is responsible for defining how mines are evaluated, designed, sequenced, and optimized—from early-stage concept evaluation through life-of-mine planning.
In this role, you will own long-range mine planning and multi-pit optimization efforts, setting the technical and analytical foundation for capital allocation, project prioritization, and development strategy. You will establish company-wide standards and best practices for short-, medium-, and long-term mine planning, ensuring consistency, rigor, and decision-quality across all assets.
This is a senior technical leadership role that sits at the intersection of geology, mine engineering,...
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