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Procurement Manager

Mariana Minerals· Commercial & Product
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San Francisco HQ, Houston, TX$150k - $170kFull-timePosted 2mo ago

About the role

Senior, self-directed role focused on pre-operational procurement for Mariana Minerals' new projects and pre-operational sites, coordinating with engineering, operations, and commercial teams to translate project needs into contracts and secure supply critical for startup and early operations.

Responsibilities

  • 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
  • Procure operating supplies and consumables (including reagents and spare parts) and non-construction capital spend (including mobile equipment)
  • Ensure all contracts are reviewed for policy compliance and enterprise-level alignment prior to execution; flag clauses with broader implications
  • Own vendor relationships through the pre-operational phase; ensure clean handoff to on-site procurement as sites become operational
  • Support on-site procurement on complex purchases, high-value negotiations, and new project scope at existing operational sites
  • Lead cross-site consolidation sourcing events to identify and capture volume-based savings opportunities
  • Contribute quote data and supplier information to the organization's pricing and market intelligence database
  • Coordinate across site and project teams to ensure continuity of supply through startup and into operations

Qualifications

  • Bachelor's degree in engineering, materials science, chemistry, or a related technical field required (equivalent experience considered)
  • 8-12+ years of experience in procurement, project procurement, or capital purchasing in mining, industrials, chemicals, or related sector
  • Proven track record of owning pre-operational or greenfield site procurement from spec to first delivery
  • Strong technical background with ability to read specifications and engage engineering teams
  • Excellent negotiation skills with a track record of securing favorable terms under time pressure
  • Highly organized with ability to manage multiple concurrent procurement workstreams across different projects and sites
  • Comfortable operating with ambiguity and limited structure; takes ownership
  • Proficient with software tools for project tracking, workstream management, and reporting

Skills

Required:Procurement strategy and executionVendor managementNegotiation
Last updated Sep 23, 2026. Interested? Apply on the company site.

About Mariana Minerals

We to the Future of Minerals, verify the mineral supply chain.

Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.

software-firstmineralsenergyAIdefense
Company profileWebsite

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