Construction Project Manager

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.

 

Our culture is built on three principles:

 

What to Expect

As a Construction Project Manager at Mariana Minerals, you will play a critical role in new facility buildout, capacity upgrades, and infrastructure delivery for one of the most ambitious companies in the critical minerals sector. You will manage general contractors and subcontractors across multiple trades to install pilot plants and collaborate cross-functionally with construction engineering, design, facilities, commissioning, and production as facilities transition to full operations. Working from both the field and the office, you will own budgets and schedules end-to-end — and help us build the software-driven project systems that make future builds faster and smarter.

 

What You'll Do

Project Ownership & Delivery

- Take full ownership of assigned projects — ensuring stakeholder satisfaction, identifying opportunities, and driving cost savings across all phases.

- Manage project delivery from scope definition and contractor procurement through construction execution, commissioning, and close-out.

- Complete project startup procedures including projections, budgeting, and job cost entry for materials, labor, equipment, and subcontracts.

- Prepare major purchase orders following appropriate pricing and scope evaluations.

- Manage all work in accordance with Mariana Minerals specifications, procedures, and policies.

Procurement & Commercial Management

- Evaluate bidding, material buyouts, and negotiating opportunities for potential and assigned projects.

- Review project plans, P&IDs, single-line diagrams, and loop diagrams to accou...