Sr. Procurement Specialist - Construction

About the Company

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.

About the Role

Mariana Minerals is looking for a hands-on, commercially strong Procurement Specialist to support capital project delivery across construction services. This role is not transactional purchasing — you will own defined procurement scopes end-to-end, from strategy through contract award and execution, and directly impact project schedule and capital efficiency.

Responsibilities

• Own Capital Procurement Workstreams
  • Lead pre-award, award, and post-award contracting activities for capital construction packages
  • Develop and execute procurement strategies aligned with project schedules and critical path activities
  • Drive commercial negotiations focused on total cost, risk allocation, and delivery certainty
  • Support PO conversion, approvals, and procurement system execution
• Manage Contracts & Commercial Risk
  • Draft, review, and negotiate NDAs, MSAs, and construction work orders
  • Manage change orders and commercial amendments in coordination with project teams
  • Ensure documentation is structured, defensible, and audit-ready
• Drive Cost & Value
  • Analyze spend and identify savings or value-creation opportunities
  • Support competition in the supplier market
  • Conduct commercial risk assessments to reduce schedule exposure
• Build Better Systems
  • Help design scalable procurement processes as the company grows
  • Improve cycle times and reduce friction in sourcing and approvals
  • Contribute to building a disciplined, data-driven procurement function from the ground up

Requirements

• 5–7+ years of procurement experience in heavy industry, capital construction, infrastructure, or industrial projects
• Experience leading competitive sourcing processes for construction
• Strong contract negotiation skills
• Clear understanding of commercial risk allocation
• Proficient with ERP/procurement systems and structured documentation

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.

Pay

Compensation Range: $108K - $135K