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The Role Mariana Minerals is looking for an architect to work on building the critical minerals supply chain. As an architect at Mariana Minerals, you will lead the architectural design of commercial and industrial buildings and assets from requirements definition through conce
The role Mariana Minerals is hiring a Regional Permitting and Compliance Environmental Engineer to own permitting execution and compliance implementation across our U.S. mining, processing, and refining project sites. Reporting to the Global Environmental Permitting Lead, you wi
We are hiring a Sr. R&D Engineering Recruiter to help build world-class engineering teams that will shape the future of industrial automation, AI, and critical minerals. In this role, you'll partner closely with recruiters, hiring managers, and technical leaders to identify, eng
The Role We're hiring a Staff Product Manager to own the Engineering and Super domains of CapitalProjectOS (CPOS), the operating system for how Mariana designs, plans, and builds capital projects. CPOS is organized around four components ( MarianaEngineer (design), MarianaGSM (p
The role Mariana Minerals is hiring a Senior Environmental Engineer to provide technical environmental engineering support across our U.S. mining, processing, and refining project sites in a fast-paced, multi-project environment. Reporting to the Global Environmental Permitting
Role Overview Mariana Minerals is looking for a highly motivated Process Controls Engineer to work on building the critical minerals supply chain. As a Process Controls Engineer at Mariana Minerals, you will lead the development and deployment of first-of-its-kind chemical refi
The Process Maintenance Technician is a hands-on role responsible for inspecting, troubleshooting, repairing, and maintaining fixed plant equipment and process systems that support Lisbon Valley’s crushing and heap leach operations. Equipment may include crushers, conveyors, pump
We are looking for a Maintenance Technician to support the day-to-day upkeep, troubleshooting, and repair of process and utility equipment at our East Texas Lithium One facility. Our Maintenance Technician will perform routine and preventive maintenance, respond to equipment brea
The Role We are seeking an experienced Vice President of Finance to lead and scale Mariana Minerals' existing Accounting and FP&A team as we grow from two capital-intensive flagship projects today toward a broader portfolio of commercial mining and mineral-processing operations.
The Role We are hiring a Senior / Staff Process Engineer to execute detailed engineering deliverables such as P&IDs, line and instrument and valve lists, control narratives, hydraulic models, equipment and bulk specifications, and the procurement packages behind them. Mariana ex
The Industrial Electrician is a hands-on role supporting the safe, reliable operation of Mariana’s mining and processing site. This position works across a broad range of electrical systems and projects, partnering closely with maintenance, operations, and engineering teams in a
We are hiring a Sr. Technical Recruiter to help build world-class engineering and technical teams that will shape the future of industrial automation, AI, and critical minerals. In this role, you'll partner closely with recruiters, hiring managers, and technical leaders to ident
The Role - The R&D Metallurgist designs, executes, and analyzes experiments to advance Mariana Minerals' hydrometallurgical testing programs. This hands-on laboratory and pilot-scale role focuses on running DOE protocols, operating tank reactors and mining systems, and analyzin
Through its Copper One platform, Mariana Minerals owns and operates the Lisbon Valley Mining Company, a producing open-pit copper mine in southeastern Utah. The operation relies on safe, reliable mobile equipment to support drilling, blasting, loading, hauling, crushing, and heap
The Mobile Maintenance Supervisor is a hands-on working supervisor responsible for leading a team of maintenance technicians and supporting the safety, reliability, and availability of Mariana’s growing mobile mining fleet. This role combines technical leadership, field troublesh
The Role Mariana Minerals is looking for a highly motivated Pyrometallurgical Process Engineer to help build the critical minerals supply chain supporting the world’s energy transition. As a Pyrometallurgical Process Engineer at Mariana Minerals, you will lead the development a
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 el
Role Overview Mariana Minerals is looking for a highly motivated Controls Engineer to work on building the critical minerals supply chain. As the I&C Engineer at Mariana Minerals, you will lead the development and deployment of first-of-its-kind chemical refining processes, whi
Role Overview Mariana Minerals is looking for a highly motivated Process Controls Engineer to work on building the critical minerals supply chain. As the Process Controls Engineer at Mariana Minerals, you will lead the development and deployment of first-of-its-kind chemical re
The Role Mariana Minerals is looking for a highly motivated Operations Supervisor to join our San Francisco Pilot Plant team. You will oversee a team of high performing technicians who support the design, deployment, and operation of first-of-its-kind refining processes for crit