--- title: 'Sr. Construction Project Manager at Mariana Minerals' canonical: 'https://feeny.ai/job/sr-construction-project-manager-mariana-minerals-houston-ncwr0ckyj1g1' type: 'job' last_seen: '2026-11-06' --- # Sr. Construction Project Manager at Mariana Minerals - **Company:** Mariana Minerals - **Location:** Houston, TX - **Employment:** full-time - **Work type:** onsite - **Posted:** 2026-06-09 - **Last confirmed live:** 2026-11-06 - **Apply:** https://jobs.ashbyhq.com/marianaminerals/d64c4408-8af6-47a9-916c-1b81705eaae2/application **Skills:** Primavera P6, Microsoft Project, Microsoft Suite, Accounting software, Estimating tools, P&IDs, Single-line diagrams, Loop diagrams, NEC, EPC/EPCM project delivery models > Leads new facility buildouts and infrastructure delivery for Mariana Minerals, managing contractors, budgets, and schedules for capital projects over $20M. Ensures safety compliance, drives cost savings, and supports automation of project management systems. ## Job description ## 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! ## About Mariana Minerals ## Company Overview - **One-liner**: Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies. - **Entity Type**: Private (Series A, $85M funding in July 2025) - **Headquarters**: San Francisco, California, United States - **Founded**: Not publicly available - **Founders**: Turner Caldwell (Co-Founder & CEO) ## Core Business - **Primary industry**: Metal Ore Mining / Critical Minerals - **Target customers**: B2B – energy, AI, and defense supply chains (including downstream manufacturers and government entities) - **Mission or purpose**: "Create a future of critical mineral abundance" by reimagining the global minerals supply chain with software, automation, and data-driven decision making. ## Products & Services - **Copper One (formerly Lisbon Valley Copper Mine)**: World’s first autonomous mine, located in Utah. Produces copper using integrated automation and software control. Restarted production in April 2026. - **Lithium One**: Lithium project (on the roadmap or early development). - **Other mineral projects**: Graphite, Uranium, Rare Earth Metals, Cobalt, Nickel, Aluminium – at various stages (stealth or roadmap). - **CapitalProjectOS**: Internal software platform for capital project management (mentioned in leadership bio). - **Technology Stack**: React, dbt, TypeScript, Python, TensorFlow, PyTorch, microservices, SCADA, Autodesk, and many others – indicating a strong software engineering backbone. ## Market Standing - **Valuation/Market Cap**: Not disclosed (private company) - **Key Metric**: Total funding – $85M Series A (July 2025, 1 investor) - **Notable Investors/Partners**: Lead investor not publicly disclosed (Andreessen Horowitz was pitched but not confirmed as an investor). Partners include Bot Auto, WeRide, Pronto, Atoms (based on LinkedIn mentions). Also works with UMA (Utah Mining Association). - **Growth Signals**: Headcount grew 3,575% YoY to 107 employees (as of mid-2026). 73 active job postings. Opened the world’s first autonomous mine (Copper One) in April/May 2026, generating significant industry news and social media engagement. ## Competitive Advantages - **Software-first approach**: The company builds automation and data systems from the ground up, rather than layering tech onto legacy mining operations. This enables fully autonomous mining. - **Vertical integration**: They develop, own, and operate mineral projects, controlling the entire value chain from extraction to processing. - **Deep tech stack**: Use of AI/ML (TensorFlow, PyTorch), simulation, and real-time control systems to optimize mining operations. - **First-mover in autonomous mining**: Copper One is claimed to be the world’s first autonomous mine, giving them a significant lead in operational efficiency and safety. ## Strategic Focus - Scale autonomous mining operations beyond copper (lithium, graphite, uranium, etc.) - Secure domestic supply of critical minerals for U.S. energy, AI, and defense needs. - Continue aggressive hiring across engineering, operations, and field roles. - Expand from Utah to additional sites (Houston engineering office, potential new projects). ## Why Work Here - **Culture principles**: "Extreme Ownership", "Engineer Out Requirements, Then Automate", "Share Your Legos" – emphasizing accountability, simplification, and collaboration. - **Work environment**: High-growth startup with a mission-driven focus on critical infrastructure. Offices in San Francisco (HQ), Houston (Engineering), and La Sal, Utah (mine site). Hybrid/remote policy not explicitly stated, but multiple office locations suggest flexibility for field vs. office roles. - **Notable perks**: Opportunity to work on cutting-edge autonomous systems and AI in a traditional industry. Strong engineering culture with modern tech stack (React, Python, ML). Rapid career growth due to company expansion. - **Talent sources**: Attracts talent from Tesla, Redwood Materials, Lilac, ExxonMobil, Amazon Web Services, and other tech/energy companies – indicating a high-caliber peer group. ## Sources 1. [marianaminerals.com](https://marianaminerals.com/) 2. [marianaminerals.com/careers](https://marianaminerals.com/careers) 3. [marianaminerals.com/about](https://marianaminerals.com/about) 4. [jobs.ashbyhq.com/marianaminerals](https://jobs.ashbyhq.com/marianaminerals) 5. 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