Mariana Minerals Jobs
Open positions at Mariana Minerals, newest first. Each listing links to the company's own application page.
- Open positions
- 99
Newest Mariana Minerals openings
Recruiting Coordinator
Direct ATSSan Francisco HQ · 2 days ago
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…
Recruiting Coordinator
Direct ATSHouston, TX · 2 days ago
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…
Lab Technician
Direct ATSMoab, UT · 2 days ago
Drive ore handling, including crushing, sorting by particle size and taking representative samples
Workplace Manager
Direct ATSHouston, TX · 9 days ago
We are hiring a Workplace Manager to own the day-to-day operations of our Houston office, be a resource for our Houston pilot plant, and remotely support our Ann Arbor satellite office as…
Stacking/Sizer Operator
Direct ATSMoab, UT · 10 days ago
The Equipment Operator plays a critical operational role in supporting mine production through the safe and efficient operation of heavy equipment, including stackers and sizers.
R&D Technician
Direct ATSSan Francisco HQ · 10 days ago
The R&D Technician executes designed experiments and operates chemical processing equipment to advance Mariana Minerals' hydrometallurgical and purification technologies.
Analytical Lab Chemist
Direct ATSSan Francisco HQ · 11 days ago
Strictly adhere to all SOPs, chemical hygiene plans, and PPE requirements to maintain a safe working environment.
Process Engineer
On-siteMoab, UT (On-site) · 13 days ago
Act as the engineering owner of the SX and EW circuits, including mixer-settlers, organic and electrolyte handling, tank house, cell house and associated utilities.
- Full-time
- Senior
- 2+ years
- Process engineering experience (2+ years)
- Commissioning of chemical or mechanical process equipment
- Process improvement project delivery with measurable results
San Francisco HQ (On-site) · 13 days ago
Mariana Minerals is looking for a highly motivated Sr./Staff Process Engineer to work on building the critical minerals supply chain to support the world’s energy transition and to supply…
- Full-time
- Lead / Staff
- Chemical engineering, metallurgical engineering, or process engineering fundamentals
- Process and equipment engineering and design
- Heat and material balances
Controls Technician
On-siteJoaquin, TX (On-site) · 14 days ago
Troubleshoot and diagnose electrical and controls issues across industrial equipment and processes, using system knowledge and the
- Full-time
- Senior
- 3+ years
- Electrical troubleshooting
- Industrial controls
- PLC programming
Houston, TX (On-site) · 16 days ago
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…
- Full-time
- Senior
- 4+ years
- Financial modeling
- M&A or transaction experience
- Corporate finance or project finance
Houston, TX (On-site) · 16 days ago
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…
- Full-time
- Mid-level
- 2+ years
- Financial modeling
- Corporate finance
- M&A
Moab, UT (On-site) · 16 days ago
Diagnose, install, and repair fixed plant equipment, including pumps, compressors, boilers, fans, motors, gearboxes, piping, valves, and automated valves, identifying root causes.
- Full-time
- Senior
- 2+ years
- Fixed plant maintenance experience
- Hands-on skill in pumps, welding/fabrication, or mechanical troubleshooting
- Knowledge of pumps, motors, gearboxes, and piping systems
Moab, UT (On-site) · 16 days ago
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…
- Full-time
- Mid-level
- Comfortable with hand and power tools
Moab, UT (On-site) · 17 days ago
Lead, supervise, and develop a team of maintenance technician
- Full-time
- Lead / Staff
- 5+ years
- Supervisory or lead technician experience
- Mining maintenance experience
- Mechanical, hydraulic, and electrical troubleshooting
San Francisco HQ (On-site) · 18 days ago
Mariana is hiring a Procurement Manager, Mobile Equipment to own the sourcing, contracting, and lifecycle management of mobile and heavy equipment across our operating sites and projects…
- Full-time
- Senior
- 5+ years
- Procurement of mobile/heavy equipment
- OEM and dealer negotiation
- Supplier relationship management
Houston, TX (On-site) · 18 days ago
Mariana Minerals is seeking a highly motivated Staff Process Modeling Engineer to support the development of next-generation refining processes for critical minerals - key to enabling the…
- Full-time
- Lead / Staff
- 8+ years
- Process simulation (ASPEN Plus/HYSYS, SysCAD, OLI Studio, or METSIM)
- Heat and material balance modeling
- Mass transfer, heat transfer, thermodynamics, fluid flow, and reaction engineering
San Francisco HQ (On-site) · 18 days ago
Mariana is hiring a Commercial Manager, Energy & Utilities to own electricity, water, and natural gas agreements across our operating sites and sites in development.
- Full-time
- Senior
- 5+ years
- Negotiating utility, energy, or industrial infrastructure service contracts
- Working knowledge of power markets, rate structures, and interconnection processes
- Strong credit and counterparty risk judgment
Houston, TX (On-site) · 18 days ago
As a Construction & Commissioning Quality Engineer, you will lead site quality across all of Mariana Minerals’ industrial process facilities, from construction and installation through…
- Full-time
- Lead / Staff
- Quality Management
- Inspection and Test Plans (ITP)
- Commissioning
Sr. Cost Control Engineer
On-siteHouston, TX (On-site) · 18 days ago
We are hiring a Cost Control Engineer to own the cost baseline, the forecast, and change control on Mariana's capital projects.
- Full-time
- Lead / Staff
- 5+ years
- Project cost control on capital projects
- Earned value management
- Trend and change management process
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