Marianaminerals
Sr. Procurement Specialist - Construction
Houston, TX
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hirly's read of this role
- Role family
- Supply chain
- Seniority
- Senior
- Country
- US
- Work mode
- On-site / unstated
- First seen by hirly
- 1 Sept 2026
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the posting
About Mariana Minerals
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.
Role Overview
Mariana Minerals is looking for a hands-on, commercially strong Sr. 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.
What You'll Do
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
What You'll Bring
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
Our culture is built on four principles:
Everyone Gets Home Safe. We never put speed or cost ahead of people.
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.
Join us as we build the future of responsible mineral sourcing and supply!
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