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Mariana Minerals

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  • Project Controls Manager

    Houston, TX, Houston, Texas, US

    unspecified Salary not disclosed

    Project Controls Manager Houston, TX, Houston, Texas, US 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: - 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. Position Summary We are hiring a Project Controls Manager to drive the systems, processes, and tools that ensure successful delivery of large-scale capital projects across mining and refining. This is a hands-on leadership role at the intersection of cost engineering, scheduling, risk management, and financial governance . You will partner closely with project executives, managers, engineers, and contractors to establish control frameworks, optimize project performance, and deliver predictable outcomes. This role is central to scaling Mariana's capital project execution and embedding our software-first mindset into how projects are planned, monitored, and delivered. What You'll do: - Develop, refine, and implement project controls systems, processes, and tools (cost, schedule, change, risk, progress) across large-scale mining capital projects. - Champion improvements in the Capital Project Operating System (Capital Project OS) . - Review, analyze,

  • Staff Machine Learning Engineer

    Ann Arbor, MI, Ann Arbor, Michigan, United States

    unspecified Salary not disclosed

    Staff Machine Learning Engineer Ann Arbor, MI, Ann Arbor, Michigan, United States 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. The Role Mariana Minerals is building the critical minerals supply chain from the ground up-and we're looking for a Staff Machine Learning Engineer to help make it autonomous. We're not a software company selling tools to mining operators. We are a mining company that builds software. Mariana designs, builds, commissions, and operates our own mines and refineries. We develop proprietary chemical processes and run them at lab, pilot, and commercial scale. Today, we're producing battery-grade lithium salts from real oil and gas wastewater in our facilities. Our first commercial-scale lithium production facility, Lithium One, is targeting initial production in Q1 of 2027. As a Staff Machine Learning Engineer at Mariana, you'll set the technical direction for how we make refining autonomous. You'll define how control models are built, validated, and trusted on live equipment across our circuits and facilities-and you'll personally take on the hardest modeling problems standing between us and fully autonomous operations. Your decisions will show up in real recovery rates, energy consumption, reagent usage, and uptime across every plant we run. The Tech This is some of the most interesting applied AI work happening today. Our internal platform, uses the

  • Machine Learning Engineer

    Ann Arbor, MI, Ann Arbor, Michigan, United States, San Francisco HQ, Houston, TX

    unspecified Salary not disclosed

    Machine Learning Engineer Ann Arbor, MI, Ann Arbor, Michigan, United States, San Francisco HQ, Houston, TX 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. The Role Mariana Minerals is building the critical minerals supply chain from the ground up-and we're looking for Machine Learning Engineers to help make it autonomous. We're not a software company selling tools to mining operators. We are a mining company that builds software. Mariana designs, builds, commissions, and operates our own mines and refineries. We develop proprietary chemical processes and run them at lab, pilot, and commercial scale. Today, we're producing battery-grade lithium salts from real oil and gas wastewater in our facilities. Our first commercial-scale lithium production facility, Lithium One, is targeting initial production in Q1 of 2027. As a Machine Learning Engineer at Mariana, you'll help build and improve the machine learning systems that control our mineral refining facilities. You'll start with well-scoped problems inside our simulators and training pipelines-and ramp quickly toward owning models that run on real, operating plants. Your work won't live behind dashboards or proxy metrics; you'll see its impact in real recovery rates, energy consumption, reagent usage, and uptime. The Tech This is some of the most interesting applied AI work happening today. Our internal platform uses the same reinforcement learning

  • Sr. Data Engineer

    Ann Arbor, MI, Ann Arbor, Michigan, United States, Houston, TX, San Francisco HQ

    unspecified Salary not disclosed

    Sr. Data Engineer Ann Arbor, MI, Ann Arbor, Michigan, United States, Houston, TX, San Francisco HQ 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. The Role Mariana Minerals is building the critical minerals supply chain from the ground up-and we're looking for a Senior Data Engineer to help make it autonomous. We're not a software company selling tools to mining operators. We are a mining company that builds software. Mariana designs, builds, commissions, and operates our own mines and refineries. We develop proprietary chemical processes and run them at lab, pilot, and commercial scale. Today, we're producing battery-grade lithium salts from real oil and gas wastewater in our facilities. Our first commercial-scale lithium production facility, Lithium One, is targeting initial production in Q1 of 2027. As a Senior Data Engineer at Mariana, you'll own a data domain end-to-end-designing the pipelines, schemas, and contracts that make a whole class of plant data trustworthy and queryable. The systems you build are the foundation every model and every operational decision depends on. The Tech This is some of the most interesting applied data work happening today. Our internal platform, PlantOS, uses the same reinforcement learning toolkits that power self-driving vehicles and humanoid robots-but applied to autonomous, short-interval control of mineral refining circuits. None of it works

  • Construction Project Manager

    Houston, TX, Houston, Texas, US

    unspecified Salary not disclosed

    Construction Project Manager Houston, TX, Houston, Texas, US 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: - 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. 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 Scheduler

    Houston, TX, Houston, Texas, US

    unspecified Salary not disclosed

    Project Scheduler Houston, TX, Houston, Texas, US 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: - 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. Position Summary The Project Scheduler is responsible for developing, maintaining, and analyzing integrated project schedules for engineering, procurement, construction, and commissioning activities. The Scheduler supports project planning, progress measurement, forecasting, and schedule risk analysis to ensure projects are delivered safely, on time, and within budget. Key Responsibilities - Develop and maintain detailed project schedules using Primavera P6 or equivalent scheduling software. - Prepare baseline schedules aligned with project scope, execution strategy, and milestones. - Monitor project progress and update schedules based on field data and contractor inputs. - Perform critical path analysis and identify schedule risks, delays, and recovery opportunities. - Support planning workshops, look-ahead schedules, and turnaround/shutdown planning activities. - Coordinate with engineering, procurement, construction, commissioning, and operations teams. - Prepare schedule performance reports, KPIs, and executive-level presentations. - Analyze schedule variances

  • Safety Specialist/Engineer

    Moab, UT, Moab, Utah, United States

    unspecified Salary not disclosed

    Safety Specialist/Engineer Moab, UT, Moab, Utah, United States Safety Specialist/Engineer Location: Copper One, Moab, UTAH 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: - 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. The Role We are seeking a Safety Specialist/Engineer to be responsible and accountable for the site's safety, health, and security, along with assisting in developing, implementing, and sustaining good safety and health practices for our team. This role is responsible to ensure that safety standards and procedures are followed by all mine personnel in compliance with company, state, and federal Mine Safety and Health Administration (MSHA) rules and regulations. Copper One is a 24/7/365 open pit mining operation with an excellent safety performance and compliance record. The ideal candidate combines OSHA and MSHA expertise and experience having acted as a Safety Specialist or Safety Engineer in mining operations. What You'll Do - Lead by example, in all safety processes, ensuring complete safe

  • Senior Accountant

    Houston, TX, Houston, Texas, US

    unspecified Salary not disclosed

    Senior Accountant Houston, TX, Houston, Texas, US 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. The Role We are hiring a Senior Accountant to support the accounting operations that ensure accuracy, transparency, and reliability across Mariana's growing portfolio of assets and operating entities. This is a hands-on role focused on executing core accounting processes and supporting the monthly close, reconciliations, and financial reporting. You will work closely with the Accounting Manager, FP&A team, and operational leaders to ensure financial activity is properly recorded and reflected in company reporting. As Mariana continues to scale, this role will also contribute to improving accounting workflows, strengthening internal controls, and helping implement systems that support efficient and reliable financial operations. This role is ideal for someone who enjoys detailed work, solving accounting challenges, and building efficient processes in a fast-moving environment. What You'll Do - Support the monthly, quarterly, and annual close process - Prepare journal entries, accruals, and account reconciliations - Maintain general ledger accuracy across multiple entities - Assist with preparation of financial statements and supporting schedules - Track and record expenses, and operational transactions - Partner with FP&A to ensure accurate budget vs. actual reporting - Investigate and resolve accounting discrepancies and variances - Support implementation and documentation of accounting policies and procedures -

  • Sr. Metallurgical Process Engineer

    Moab, UT, Moab, Utah, United States

    unspecified Salary not disclosed

    Sr. Metallurgical Process Engineer Moab, UT, Moab, Utah, United States 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 how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply. Role Overview Mariana Minerals is seeking a highly motivated Sr. Metallurgical Process Engineer to support process development activities & scale-up experiments at our CopperOne mine outside of Moab, UT. You will oversee engineering and operations of our bioleaching columns and other pilot scale equipment supporting current and future mine projects. This role is highly hands-on and will play a key role in bridging R&D and operations, helping scale technologies from laboratory development through pilot demonstration and ultimately to commercial mining. You will work closely with R&D, technicians, metallurgists, and cross-functional teams to ensure processes are robust, efficient, and suitable for future development & scale-up. What You'll Do - Operate, troubleshoot, and improve leaching columns and other pilot-scale processing equipment in collaboration with technicians - Design and execute pilot-scale experiments to bridge learnings between R&D and commercial mine scale - Develop and maintain key process documentation including PFDs, P&IDs, operating procedures, mass balances, etc - Analyze experimental and operational data to identify opportunities for process optimization and scale-up - Support development of automated monitoring and optimization tools in collaboration with software

  • Process & Lab Technician

    Moab, UT, Moab, Utah, United States

    unspecified Salary not disclosed

    Process & Lab Technician Moab, UT, Moab, Utah, United States 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. The Role We are hiring a Process & Lab Technician to support the safe, efficient, and high-quality process development studies and analytical tests. In this role, you will work closely with R&D and engineering to build, operate, and maintain ore leaching columns. You will also be responsible for timely, accurate, and actionable chemical analysis of ore, process streams, and final products. You will play a critical role in bridging leaching research and laboratory analytics with plant operations, helping ensure processes are robust, efficient, and suitable for future development & scale-up. What You'll Do - Procure and construct columns and ancillary equipment used to measure copper leaching fundamentals - Drive leaching column operations including taking routine samples, troubleshooting equipment issues, and maintaining high level of cleanliness - Drive ore handling including crushing, sorting by particle size, and taking representative samples - Prepare samples for analysis using techniques such as digestion, dilution, and/or filtration - Perform elemental and compositional analysis of solid and liquid samples using ICP, NMR, XRF, Titrator, or similar analytical techniques - Document analytical results in laboratory information systems and maintain clear experimental records and material metrics using digital tools and software - Follow

  • Drilling Engineer, Exploration & Resource Automation

    Moab, UT, Moab, Utah, United States

    unspecified Salary not disclosed

    Drilling Engineer, Exploration & Resource Automation Moab, UT, Moab, Utah, United States 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 how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply. Role Overview We are hiring a Drilling Engineer, Exploration & Resource Automation to help build and implement the automated drilling, sampling, QA/QC, and resource workflows inside MarianaOS. This role sits at the intersection of drilling, geology, resource estimation, field operations, and software product development. You will work closely with Mariana Minerals' software team to translate real-world exploration and drilling workflows into scalable software tools, automated systems, and practical field-to-model solutions. The focus is not only to execute drilling programs, but to help automate how those programs are planned, tracked, sampled, analyzed, reconciled, and optimized across greenfield, brownfield, infill, resource definition, and new drilling campaigns. The ideal candidate has a strong geology, drilling, resource modeling, and resource estimation background, plus a strong motivation to automate manual workflows and build better tools for technical teams. Experience with sediment-hosted copper, sandstone-hosted copper, red-bed copper, stratiform copper, or similar deposits is helpful, but not required. Experience creating products, internal tools, technical solutions, dashboards, workflows, or software-enabled processes is a meaningful asset. You will work on Copper One, a real sedimentary copper project

  • Chemical Engineering Intern

    Moab, UT, Moab, Utah, United States

    unspecified Salary not disclosed

    Chemical Engineering Intern Moab, UT, Moab, Utah, United States 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. The Role We are hiring a Chemical Engineering Intern to work on real, high-impact problems within the Operations team. You will contribute directly to commissioning a first-of-a-kind copper scrap recycling plant, working closely with engineers and domain experts. This role is designed to provide hands-on experience building and shipping solutions , not just supporting tasks. What You'll Do - Assist in commissioning pilot equipment - Operate pilot plant to perform various process tests and performance evaluations - Collaborate with cross-functional team members including engineers and operators - Present outcomes and learnings at the end of the internship Desired Qualifications - Currently pursuing a degree in Chemical Engineering or Metallurgy - Strong fundamentals in fundamental knowledge, data recording, organization and analysis, and equipment operation/maintenance - Hands-on experience with processing equipment - Ability to break down problems and execute independently - Clear communication and willingness to learn - Willingness to work both day & night shifts with operators and engineers Why Join Us? At Mariana Minerals, you'll be part of a mission-driven team reshaping the way critical minerals are sourced and supplied globally. You'll have the autonomy to make big decisions, the tools to innovate, and a culture

  • People Systems & Programs Lead

    San Francisco HQ, San Francisco, California, US, Houston, TX

    unspecified Salary not disclosed

    People Systems & Programs Lead San Francisco HQ, San Francisco, California, US, Houston, TX 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. The Role We are hiring a People Systems & Programs Lead to build and scale the operational foundation of our People function across recruiting, HR systems, onboarding, and employee operations. This is a highly cross-functional role focused on designing efficient people processes, implementing scalable systems, and enabling exceptional employee and candidate experiences. You'll partner closely with leadership, recruiting, finance, and operations teams to streamline workflows, improve data visibility, and help build a modern, automation-first People organization. The ideal candidate brings a strong blend of recruiting operations, HR systems expertise, and process design experience, with the ability to operate strategically while remaining hands-on in execution. This role is ideal for someone excited about building infrastructure in a fast-moving, high-growth environment. What You'll Do - Own and improve People Operations processes across recruiting, onboarding, employee lifecycle management, and offboarding - Manage and optimize HRIS, ATS, and related People systems - Partner with recruiting teams to streamline hiring operations and candidate workflows - Build scalable reporting and dashboards for recruiting and people metrics - Drive process automation and operational efficiency across People functions - Ensure data integrity, compliance, and accurate employee records management -

  • Sr. Electrical Engineer

    San Francisco HQ, San Francisco, California, US, Houston, TX

    unspecified Salary not disclosed

    Sr. Electrical Engineer San Francisco HQ, San Francisco, California, US, Houston, TX 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 how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply. Role Overview Mariana Minerals is seeking a highly motivated Sr. Electrical Engineer to support the design and implementation of power systems that enable the build-out of critical mineral infrastructure vital to the global energy transition. In this role, you will lead and contribute to the development of high, medium, and low voltage electrical distribution systems for first-of-its-kind chemical refining processes. Your work will span the full project lifecycle-from conceptual studies to detailed design, construction, commissioning, and energization. You will also be responsible for system modeling and analysis, ensuring that power systems are robust, reliable, and compliant with applicable standards. What You'll Do - Design and develop power distribution systems across high, medium , and low voltage networks for industrial infrastructure projects. - Produce and review single-line diagrams (SLDs), panel schedules, wiring diagrams, grounding plans, conduit/cable schedules, and equipment specifications. - Perform power system studies including: - Load flow and voltage drop analysis - Short circuit analysis - Arc flash hazard assessment - Protective device coordination - Select and specify electrical equipment such as transformers, switchgear, motor control centers

  • Contract Building Information Modeling (BIM) Designer

    Houston, TX, Houston, Texas, US, remote

    remote Salary not disclosed

    Contract Building Information Modeling (BIM) Designer Houston, TX, Houston, Texas, US, remote 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 how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply. What You'll Do - Develop, update, and maintain 2D and 3D drawings and models using AutoCAD Plant 3D, Civil 3D, and Revit - Support multi-disciplinary layouts, including: - Equipment and general arrangement plans - Civil drawing support - Maintenance of CAD standards across projects - Ensure high accuracy and quality of drawings and models, with strict adherence to project and company standards - Support BIM and digital delivery workflows, including: - Model cleanup, coordination, and standardization - Assist with automation and efficiency improvements using basic scripting and tools such as Python, PowerShell, AutoLISP - Prepare drawings and models for design reviews, construction, and field execution - Maintain organized project files, templates, and documentation in accordance with internal CAD/BIM standards - Collaborate closely with engineers, project managers, and external consultants to provide drafting and modeling support - Assist with laser scanning registration from LiDAR and SLAM based scanners What You'll Bring - 3+ years' experience as a CAD Designer, CAD Drafter, BIM Designer or similar role - Strong proficiency in AutoCAD (Civil 3D, Plant 3D Preferred) - Experience working

  • Contract Piping Designer

    San Francisco HQ, San Francisco, California, US, Houston, TX

    unspecified Salary not disclosed

    Contract Piping Designer San Francisco HQ, San Francisco, California, US, Houston, TX 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 how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply. Role Overview Mariana Minerals is looking for a Contract Piping Designer to work on building the critical minerals supply chain. As a Piping Designer at Mariana Minerals, you will lead the configuration of projects in AutoCAD Plant 3D (or similar software packages), develop best practices and workflows for drafting and modeling, and support drafting and modeling activities from conceptual engineering through to detailed design. What You'll Do - Configure new projects in AutoCAD Plant 3D - Setup Data Manager and Smart P&IDs - Draft process flow diagrams (PFDs) - Configure and draft smart piping and instrumentation diagrams (P&IDs) - Develop and draft plot plans - Define requirements for third party 3D equipment models and P&IDs to integrate into Mariana Minerals hosted AutoCAD Plant 3D environment - Define requirements for third party EPC companies to complete detailed engineering What You'll Bring - 5+ years of experience with AutoCAD Plant 3D - CAD admin experience - 2D drafting experience. PFDs, P&IDs, Plot Plans, etc. - 3D modeling experience. Piping design, isometric generation, etc. Why Join Us? At Mariana Minerals, you'll

  • Contract Electrical & Instrumentation Designer

    remote, San Francisco, California, United States

    remote Salary not disclosed

    Contract Electrical & Instrumentation Designer remote, San Francisco, California, United States 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 how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply. Role Overview Mariana Minerals is looking for a Contract Electrical & Instrumentation Designer to work on building the critical minerals supply chain. As an Electrical & Instrumentation Designer at Mariana Minerals, you will lead the configuration of projects in AutoCAD Electrical (or similar software packages), develop best practices and workflows for drafting and modeling, and support drafting and modeling activities from conceptual engineering through to detailed design. What You'll Do - Configure new projects in AutoCAD Electrical - Setup project databases, symbol libraries, and drawing templates - Draft single-line diagrams (SLDs) and electrical one-lines - Configure and draft schematic wiring diagrams, loop drawings, and instrument location plans - Develop and draft cable tray and conduit routing layouts, grounding plans, and instrument index lists - Define requirements for third party electrical equipment models, vendor schematics, and instrument datasheets to integrate into Mariana Minerals hosted AutoCAD Electrical environment - Define requirements for third party EPC companies to complete detailed engineering What You'll Bring - 5+ years of experience with AutoCAD Electrical - CAD admin experience - 2D drafting experience. SLDs, schematics,

  • Sr. Technical Program Manager

    Moab, UT, Moab, Utah, United States

    unspecified Salary not disclosed

    Sr. Technical Program Manager Moab, UT, Moab, Utah, United States 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 how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Join us as we build the future of responsible mineral sourcing and supply. The Role Mariana Minerals is looking for a Sr. Technical Program Manager to join its Engineering team, to lead the delivery of a mining project at its Copper One subsidiary in Utah. This role will be instrumental in bridging initiatives and workstreams across R&D, piloting, existing operational infrastructure, engineering, construction, environmental, finance, and more. What You'll Do - Own the integrated project execution plan, master schedule, cost estimate, and risk register - Facilitate program meetings and ensure clear action tracking and progress on task statuses - Manage interfaces between all technical disciplines, contractors, and site operations - Translate geological uncertainty into project risk, contingency, and study scope - Ensure clear alignment on metallurgical test work, R&D programs, and pilot plant campaigns to de-risk the flowsheet - Direct engineering consultants and internal teams through studies and trade-offs (mining method, process route, throughput, utilities) - Oversee detailed engineering, procurement, and contractor performance - Translate permit conditions into design requirements, schedule constraints, and cost - Own the project business case, capital and operating estimates, and economic model inputs - Present funding requests and

  • Lead Resource Geologist

    Houston, TX, Houston, Texas, US, San Francisco HQ

    unspecified Salary not disclosed

    Lead Resource Geologist Houston, TX, Houston, Texas, US, San Francisco HQ 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. The Role Mariana Minerals is seeking a Lead Resource Geologist to support resource development, mine geology, and technical studies across open pit and underground mining projects. This role will contribute directly to geological interpretation, resource modeling, and grade control inputs that underpin mine planning, engineering, and economic evaluation. In this role, you will work closely with mine planning, mining engineering, and operations teams to ensure geological models are technically sound, practical, and aligned with mining realities. You will apply hands-on experience in nickel and copper systems to support resource growth, model refinement, and operational decision-making across multiple stages of project development. This role is ideal for a geologist with solid field, modeling, and operational experience who wants to demonstrate technical excellence and impact in a fast-moving, project-driven environment. What You'll Do Geological Modeling & Interpretation - Own geological and mineral resource model governance, including assumptions, documentation, uncertainty, and technical defensibility - Build, update, and maintain geological and resource models supporting open pit and underground mine designs and economic evaluation - Interpret lithology, structure, alteration, and mineralization using drilling, mapping, and sampling data - Define and apply domain-based modeling approaches and geostatistical methods appropriate for

  • Electrician

    East Texas, Joaquin, Texas, US

    unspecified Salary not disclosed

    Electrician East Texas, Joaquin, Texas, US 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: 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. POSITION DESCRIPTION: The Mariana Minerals Electrician will provide competent and effective electrical support to our Refinery operations in East Texas. Our Electrician will be primarily responsible for maintaining, repairing, testing, adjusting, and assisting in the installation and removal of all electrical, communication, control, and measurement equipment at assigned locations. Our Electrician will perform a variety of operations, maintenance, and construction tasks to maintain safe operations of the refinery and its related facilities all while ensuring the facility is operated and maintained in compliance with company and applicable regulatory standards and practices. KEY RESPONSIBILITIES AND ACCOUNTABILITIES: - Understand how to read and translate the information found within building and process blueprints and one-line diagrams to install outlets, circuits, load centers and other forms of electrical equipment - After installing the electrical equipment, test all connections to ensure all components are working properly and safely. - Troubleshoot and diagnose