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About the Role
Mariana Minerals is seeking a technician for its San Francisco Pilot Plant team to support the design, deployment, and operation of critical mineral refining processes and plant optimization software. This hands-on role bridges R&D and Operations, ensuring process robustness, safety, and cost-effectiveness.
Responsibilities
- Operate and monitor copper extraction chemical processes with engineers and technicians.
- Safely handle chemicals, raw materials, and waste streams according to SOPs and regulations.
- Support sampling, quality checks, and basic laboratory measurements.
- Assist with the design, installation, startup, and commissioning of new equipment and processes.
- Maintain plant cleanliness and organization, ensuring work areas, tools, and equipment are ready for operations.
- Perform routine maintenance, inspections, and basic mechanical repairs, documenting actions in a CMMS.
- Create and maintain procedures, experimental records, shift reports, and other operational documents.
Requirements
- Associate degree, technical certificate, or equivalent experience in chemical technology, process technology, industrial operations, or a related field.
- 3+ years of experience operating pilot plant or commercial scale industrial equipment in minerals processing, chemicals, specialty materials, oil & gas, biotech, or similar industry.
- Prior exposure to core plant safety work processes (LOTO, hot work permitting, confined space entry, safe work permitting).
- Experience using HMIs and plant software systems for process monitoring, control, and adjustment.
- Experience with hands-on equipment installation, modification, and troubleshooting.
- Basic knowledge of inorganic chemistry, pH, and reaction stoichiometry is a plus.
- Experience using engineering documents like PFDs, control narratives, or P&IDs is a plus.
- Ability to climb stairs, stand for extended periods, and safely lift up to 50 lbs.
Skills
- Chemical technology
- Process technology
- Industrial operations
- Plant safety work processes
- Human-Machine Interfaces (HMIs)
- Plant software systems
- Equipment installation
- Equipment modification
- Equipment troubleshooting
- Inorganic chemistry
- pH
- Reaction stoichiometry
- PFDs
- Control narratives
- P&IDs
- Computerized Maintenance Management System (CMMS)
Location
- San Francisco
Work Type
- Full-time
Experience Level
- 3+ years
Education Level
- Associate degree
- Technical certificate
- Equivalent experience
About the Company
- Mariana Minerals is a software-first, vertically integrated minerals company.
- The company's mission is to supply critical minerals for modern energy, AI, and defense technologies.
- They are reimagining the minerals supply chain using industry expertise, software, automation, and data-driven decision-making.