Pilot Plant Technician (Night Shift)

Mariana Minerals
San Francisco, California
Workplace: OnsiteFull timeUSD 35 - 45 hourlyFunction: Field Service, Maintenance & Skilled TradesEducation: associatesSkills: ["Safety compliance","Hands-on troubleshooting","Documentation","Equipment operation"]

Join Mariana Minerals’ San Francisco pilot plant team on the night shift to support first-of-a-kind refining processes for critical minerals. Assist in operating and monitoring copper extraction chemical processes, handling chemicals and waste streams per SOPs, conducting sampling and quality checks, and supporting equipment installation, startup, and commissioning. Maintain a clean, ready-to-operate plant environment, perform routine maintenance and inspections, and document work and experimental/shift records in CMMS and related systems.

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FursaFursa
Mariana Minerals
Mariana Minerals
4 days ago

Pilot Plant Technician (Night Shift)

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Source: Company careers pageValidated by: Fursa AI
Last checked: 10 hours agoStatus: Live

Job Summary

Join Mariana Minerals’ San Francisco pilot plant team on the night shift to support first-of-a-kind refining processes for critical minerals. Assist in operating and monitoring copper extraction chemical processes, handling chemicals and waste streams per SOPs, conducting sampling and quality checks, and supporting equipment installation, startup, and commissioning. Maintain a clean, ready-to-operate plant environment, perform routine maintenance and inspections, and document work and experimental/shift records in CMMS and related systems.
Location: San Francisco, California
Workplace: Onsite
Employment Type: Full time
Job Function: Field Service, Maintenance & Skilled Trades

Key Responsibilities

  • •Assist engineers and other technicians to operate and monitor copper extraction chemical processes
  • •Safely handle chemicals, raw materials, and waste streams in compliance with SOPs and regulations
  • •Support sampling, quality checks, and basic laboratory measurements
  • •Assist with design, install, startup, and commissioning of new equipment and processes
  • •Perform routine maintenance, inspections, and basic mechanical repairs; document findings & actions in a CMMS

Pay and Benefits

Salary: USD 35 - 45 hourly

Key Requirements

  • •Associate degree, technical certificate, or equivalent experience in chemical technology, process technology, industrial operations, or a related field
  • •Experience operating pilot plant or commercial scale industrial equipment in minerals processing or related industries
  • •Experience with core plant safety work processes such as Lockout/Tagout (LOTO), hot work permitting, and confined space entry
  • •Experience using human–machine interfaces (HMIs) and plant software systems to monitor, control, and adjust process operation
  • •Experience with hands-on equipment installation, modification, and troubleshooting
Experience:Mineral processingChemicalsIndustrial operationsOil & gasBiotech
Education:Associate's
Skills:Safety complianceHands-on troubleshootingDocumentationEquipment operation
Tech Stack:CMMSHMIs

Company Brief

Mariana Minerals
Software-first, vertically integrated minerals company developing extraction, processing, and automation systems to supply critical minerals (lithium and others) for energy, AI, and defense technologies, and building commercial-scale lithium facilities from produced water.
Industry: Mining & Metals
Company Size: Small (11 to 50 employees)
Growth: Early Stage Startup
Funding: Series A
Headquarters: San Francisco, United States
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