Sr. 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.

Sr. Construction Project Manager

Role Overview

As a Sr. Construction Project Manager, you will play a central role in managing new facility construction, capacity expansions, and major infrastructure projects. You'll oversee contractors and project teams, manage budgets and timelines, and lead both in-field and office-based initiatives to deliver strategic capital projects. Your expertise will be vital to scaling operations safely, efficiently, and on budget.

What You'll Do

• Project Ownership & Delivery:
• Take end-to-end ownership of assigned construction projects, ensuring stakeholder satisfaction and identifying cost efficiencies.
• Direct project delivery from scope development and contractor procurement to construction, commissioning, and project close-out.
• Lead project startup activities including forecasting, budgeting, and job cost tracking.
• Manage major purchase orders with thorough pricing and scope reviews.
• Ensure project compliance with Mariana Minerals standards and company policies.
• Procurement & Commercial Management:
• Evaluate bids, manage procurement, and negotiate for optimal project outcomes.
• Review plans and technical diagrams to verify all required material and hardware are accounted for.
• Handle change orders and claims, seeking favorable commercial resolution.
• Prepare regular project reports on cost, schedule, risks, and overall quality.
• Contractor & Stakeholder Management:
• Maintain open communication with cross-functional teams (QC, QA, commissioning, facilities, operations).
• Oversee contractor performance to ensure achievement of KPIs and deliverables.
• Liaise with regulatory, permitting, and community stakeholders as needed.
• Systems & Automation:
• Collaborate with software engineering to advance project management tools and support ongoing automation.
• Mentor junior team members and foster a culture of growth and efficiency.
• Health, Safety & Environment:
• Lead a "zero-harm" safety culture, conducting regular safety reviews and toolbox talks.
• Ensure alignment with all HSE plans and regulatory requirements.
• Monitor and manage environmental controls (dust, water, waste) during construction.
• What You'll Bring
• Bachelor’s degree in Construction Management, Engineering, or related field; or equivalent experience.
• 8+ years in construction project management in industrial/mining/processing plants.
• Demonstrated success delivering capital projects of $20M+ on schedule and within budget.
• Skilled in Primavera P6, Microsoft Project, Office Suite, accounting, and estimating tools.
• Proficient at reading and interpreting contracts, engineering documentation, and specifications.
• Strong knowledge of construction practices, industry codes, procurement, electrical fundamentals, and accounting.
• Excellent communication, judgment, and decision-making abilities in dynamic environments.
• Willingness to travel up to 50% to project sites or offices.
• Experience with EPC/EPCM delivery models highly desirable.
• 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!