Global Sourcing Manager

About Mariana Minerals

Mariana Minerals is a software-first, vertically integrated minerals company dedicated to supplying critical minerals essential for modern energy, AI, and defense technologies. We aim to reimagine the minerals supply chain by integrating deep industry expertise with advanced software, automation, and data-driven decision-making.

Global Sourcing Manager

We are seeking a Global Sourcing Manager to oversee procurement for our new projects and pre-operational sites. This is a senior, self-directed role requiring extensive technical and commercial experience in industrial procurement.

What You’ll Do

• 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
• Cover coordination across site and project teams to ensure continuity of supply through startup and into operations

Desired Qualifications

• Bachelor's degree in engineering, materials science, chemistry, or a related technical field required. Equivalent technical depth through experience may 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
• Comfortable operating with ambiguity and limited structure; takes ownership and figures it out
• Proficient with software tools for project tracking, workstream management, and reporting

Culture

Our culture is built on three principles: Extreme Ownership – We take full responsibility for outcomes, relentlessly driving toward solutions. Engineer Out Requirements, then Automate – We simplify, optimize, and then automate for scale. Share Your Legos – We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.

Compensation Range

$150K - $170K