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
Work directly with engineering and technical teams to define procurement requirements for pre-operational sites; translate technical specifications into sourcing scope Own end-to-end pre-operational procurement: qualify vendors per established policy frameworks, run RFQ and competitive bid processes, negotiate pricing and contract terms, execute purchases, manage first deliveries
What they're looking for
- Bachelor's degree in engineering, materials science, chemistry, or a related technical field required. Candidates without a degree who can demonstrate equivalent technical depth through experience will be considered
- 8-12+ years of experience in procurement, project procurement, or capital purchasing in mining, industrials, chemicals, or a related sector
- Proven track record of owning pre-operational or greenfield site procurement from spec to first delivery
- Strong technical background with the ability to read specifications, understand process requirements, and engage credibly with engineering teams
- Excellent negotiation skills with a track record of securing favorable terms under time pressure and without a large team behind you
- Highly organized with the ability to manage multiple concurrent procurement workstreams across different projects and sites
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 is hiring a Procurement Manager to own procurement for our new projects and pre-operational sites. This is a senior, self-directed role requiring deep technical and commercial experience in industrial procurement.
In this role, you will ensure sites have the supply agreements, vendor relationships, and procurement coverage they need before they go live. You will work across engineering, operations, and commercial functions to translate project needs into executed contracts, and identify sourcing opportunities across the portfolio. This role covers operating supplies, consumables, and non-construction capital spend. Construction and fixed equipment procurement are owned by the Capital Projects team.
Work directly with engineering and technical teams to define procurement requirements for pre-operational sites; translate technical specifications into...
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