Mariana Minerals
About Mariana Minerals
Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies. It engineers, builds, and operates mines and refineries using its proprietary MarianaOS platform, which integrates capital project execution, refinery operations, and mine management into a single AI and machine learning stack. The company targets domestic U.S. critical mineral supply for sectors facing supply chain vulnerabilities, including copper and lithium.
Open positions (96)
Analytical Lab Chemist
Fabrication Technician
Project Engineer
BIM Design Engineer
IP Counsel
Commercial Counsel
Production Planner
Logistics Analyst
Sr./Staff Process Engineer - Detailed Engineering and Plant Design
Pilot Plant Operations Manager
Plant Design Manager
Sr. Piping Designer
Blast Hole Driller
Operator
Member of the Special Projects Staff
Lab Technician
Business Operations Manager
Sr. Environmental Engineer
Sr. Process Controls Engineer
Staff Product Manager, Engineering & Construction
Custodian/General Labor
R&D Metallurgist
Sr. Technical Recruiter
Mobile Maintenance Supervisor
Sr./Staff Technical Program Manager - Copper
Sr. Recruiter
Director of Mining and Technical Services
Staff Machine Learning Engineer
Sr. Construction Project Manager
Site Superintendent
Senior Safety Engineer
Sr. Regional Permitting and Compliance Environmental Engineer
Staff Product Designer, MarianaOS
Procurement Manager, Chemicals & Fuels
Sr./Staff Mechanical Engineer
Process Safety Engineer
Mechatronics Engineer (Hardware)
Head of Engineering Programs
Staff Product Manager
Recycling Operator
Sr. Procurement Specialist - Process Equipment
Lead Operator
Core Driller
Project Maintenance Technician
Machine Learning Engineer
Technical Product Manager, ML & Robotics
Sr. Data Engineer
Engineering Manager, MarianaOS
Process Engineer
Sr. Data Scientist
Core Driller Assistant
Engineering Design Manager
Sr. Estimator
Sr/Staff Civil Engineer
Sr./Staff Architect
Staff Machine Learning Engineer (Autonomy)
Process Plant Technician
Mine Planner
Extractive Metallurgist
Staff Process Controls Engineer - Networking and Systems Administration
Machine Learning Engineer (Autonomy)
Project Electrician
Sr. Software Engineer, Infrastructure
Logistics Manager
Manager, Piping Design & Engineering
Technical Product Manager, Data & Analytics Platform
Sr. Software Engineer, Autonomy
Driller Assistant (Helper)
Analytical Lab Chemist
Procurement Manager, Mobile Equipment
Commercial Manager, Energy & Utilities
Construction & Commissioning Quality Engineer
Staff Process Modeling Engineer
Sr. Cost Control Engineer
Mobile Maintenance Supervisor
Maintenance Technician, Electrical
Associate, Corporate Development
Process Maintenance Technician
Manager, Corporate Development
Staff Mobile Equipment and Fleet Engineer
Vice President of Finance
Laboratory Technician
Sr. Site Development Engineer
Staff Mechanical Engineer
Administrative Assistant
Head of Creative
Drone Operator
Senior Full Stack Software Engineer
Maintenance Technician
Sr./Staff Technical Program Manager - Lithium
Engineering Coordinator
Staff Mining Engineer
Maintenance Technician - Career Development Program
Analytical Systems Specialist / Applications Chemist
Full Stack Software Engineer
Document Control Coordinator
Company details
Funding
Total raised
$400M
Last stage
Series A
Investors
Founders
Turner Caldwell
Previously led Tesla's metals and minerals team, deploying billions of dollars across the company's lithium and battery facilities.
LinkedInJuan Lozano
Scaled ML systems at Affirm and Kite, bringing technical range and a track record of shipping real-world AI systems.
Baker Tilney
Previously founded and scaled an integrated energy company focused on revitalizing American production assets, later sold to Vitol.
LinkedInWhat happens next.
No applications, no recruiter spam. Just the intro.
Confirm the fit
A few questions to make sure this role is the right shape for you. Two minutes.
I pitch you to the company
I write the intro, send it to the founder, and handle the back-and-forth.
A meeting lands on your calendar
If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.