Houston, Texas, United States · On-site
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…
Skills: Pyrometallurgy, Thermodynamic modeling, Process engineering, Chemical engineering, Metallurgical engineering
Houston, Texas, United States · On-site
Join the UTHealth Department of Neurology in Houston, Texas, as a Staff Nurse and play a vital role in delivering exceptional, patient-centered care to individuals and families facing complex neurological conditions. As …
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Houston, Texas, United States · On-site
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Houston, Texas, United States · On-site
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Houston, Texas, United States · On-site
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Houston, Texas, United States · On-site
We are hiring a Postdoctoral Research Fellow (Full-time) to join the UTHealth Houston McGovern Medical School Department of Biochemistry & Molecular Biology in Houston, Texas. In this role, you will to lead research proj…
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Houston, Texas, United States · On-site
Join the innovative team at UTHealth Houston’s Department of Ophthalmology – Vision Research as a full-time Research Scientist and contribute to groundbreaking studies aimed at understanding the mechanisms that regulate …
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Houston, Texas, United States · On-site
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Houston, Texas, United States · Hybrid
Launch Your Environmental Consulting Career and Help Shape Sustainable Project Outcomes Are you looking to build hands-on environmental consulting experience while working on projects that balance development needs with …
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Houston, Texas, United States · On-site
McGovern Medical School at UTHealth Houston is seeking a board-eligible or board-certified clinician with retina fellowship training to join the Department of Ophthalmology and Visual Science. This is an academic track p…
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Houston, Texas, United States · Hybrid
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Job Description:About the Role: Executive Director - Head of Energy Markets Research & Analysis, you will be a member of the research leadership team responsible for developing and stewarding olefin chemicals market rese…
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Houston, Texas, United States · On-site
UTHealth Houston's Psychiatry and Behavioral Sciences' Texas Youth Depression and Suicide Research Network (Tx-YDSRN) is looking for a strong candidate with excellent communication and interpersonal skills to recruit, se…
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Houston, Texas, United States · On-site
BenefitsPaid Time Off & Paid Company HolidaysMedical, Dental, Vision & Life InsuranceFlexible Spending Account (FSA)403(b) Retirement Plan with Company MatchShort-Term & Long-Term Disability$0 Copay for Legacy Provider v…
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Houston, Texas, United States · On-site
We are hiring a Research Assistant I (Full-time) to join the UTHealth Houston McGovern Medical School Department of Biochemistry & Molecular Biology in Houston, Texas. In this role, you will support laboratory duties, in…
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Houston, Texas, United States · On-site
Would you like to join an international team working to improve the future of healthcare? Do you want to enhance the lives of millions of people? Grifols is a global healthcare company that since 1909 has been working to…
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Houston, Texas, United States · On-site
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LumicellHouston, Texas, United States · On-site
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Skills: Clinical support, Medical device implementation, Operating room protocols, Customer relationship management, Technical troubleshooting
Houston, Texas, United States · On-site
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Houston, Texas, United States · On-site
The Veterinary Resource Technologist II provides skilled veterinary care and technical support for laboratory animals involved in surgical and non-surgical research studies. This role is responsible for peri-operative an…
Skills: Veterinary technology, Laboratory animal care, Anesthesia support, Surgical assistance, Peri-operative care
Houston, Texas, United States · Hybrid
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Job Description:About the Role: As Executive Director - Olefins Market Research & Analysis, you will be a member of the research leadership team responsible for developing and stewarding olefin chemicals market research …
Skills: Market Research, Price Forecasting, Strategic Planning, People Management, MS Office
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You will lead the development and deployment of high-temperature refining and thermal processing systems from concept through commissioning. This role involves modeling complex pyrometallurgical unit operations and collaborating with software teams to automate process workflows.
Candidates must have a strong foundation in chemical, metallurgical, or process engineering with demonstrated experience in pyrometallurgical systems. Proficiency in thermodynamic modeling, equipment design, and industrial process optimization is essential for this role.
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.
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 and deployment of first-of-its-kind high-temperature refining and thermal processing systems. You will play a central role in designing, modeling, scaling, and commissioning pyrometallurgical unit operations, while supporting development of software tools for capital project execution and automated plant optimization.
Responsibilities include leading equipment and process scopes from concept and modeling validation through detailed engineering, installation, commissioning, ramp-up, and handover to operations.
Lead pyrometallurgical process scopes from early concept development and thermodynamic modeling through procurement, detailed engineering, fabrication, installation, commissioning, and ramp-up
Develop detailed heat and material balances for high-temperature process trains, including drying, calcination, roasting, reduction, smelting, converting, slag cleaning, refining, and off-gas treatment
Design and validate thermal process flowsheets and PFDs/P&IDs for pyrometallurgical circuits, ensuring safety, reliability, and scalability
Build first-principles thermodynamic and kinetic models for high-temperature reactors and furnaces (e.g., rotary kilns, calciners, electric arc furnaces, submerged arc furnaces, reverberatory furnaces, flash smelters) to support scale-up and commercial deployment
Model and optimize phase equilibria, slag chemistry, metal recovery, refractory performance, and energy efficiency
Define specifications and operating envelopes for high-temperature process equipment, burners, power systems, refractory linings, and gas-handling systems
Identify, evaluate, and implement process improvements to maximize metal recovery, minimize energy consumption, control emissions, and ensure stable furnace operation under varying feedstock chemistries
Collaborate closely with R&D, lab teams, and pilot-plant engineers to translate bench- and pilot-scale findings into robust commercial pyrometallurgical designs
Work with environmental and controls teams to design and optimize off-gas handling systems (e.g., cyclones, baghouses, scrubbers, thermal oxidizers, heat-recovery systems)
Partner with software and machine-learning teams to automate process-engineering workflows and develop advanced control, optimization, and digital-twin models for high-temperature reactors and furnaces
Strong understanding of engineering fundamentals and demonstrated ability to leverage the understanding to solve challenging problems
Strong foundation in chemical engineering, metallurgical engineering, or process engineering, with demonstrated ability to apply engineering fundamentals to complex pyrometallurgical systems
Experience with equipment engineering and design. Including but not limited to:
Brownfield modifications and upgrades of process equipment (e.g., leach tanks, reactors, filtration systems, solvent extraction circuits)
Greenfield design of hydrometallurgical unit operations and integrated circuits
Troubleshooting, evaluation, and optimization of operating pyrometallurgical or chemical-process equipment
Experience with the following industries and/or production environments:
Pyrometallurgical mineral processing or metal refining
Large-scale mining, critical-minerals processing, or battery-materials production
Industrial chemical manufacturing with complex aqueous/chemical reaction systems
Engineering, procurement, and construction (EPC/EPCM) firms supporting mining and mineral processing industry projects
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.
Building a better minerals company
Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.
Offices: San Francisco, CA 94107, US · La Sal, UT 84530, US · 1400 Minnesota St, San Francisco, California 94107, US
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