Pilot Plant Fabrication Technician

Mariana Minerals; San Francisco (CA); On-site; USD 34,000 - 48,000; Full time

Job summary

Mariana Minerals is seeking a highly motivated Fabrication Technician to join our San Francisco Pilot Plant team. You will support the design, installation, and maintenance of our first‑of‑its‑kind refining processes for critical minerals, bridging R&D and operations.

You’ll help build fabrication capabilities and adapt to unique project demands. The role involves traveling to other Mariana sites 10–25% of the time, performing safe maintenance per LOTO and hot work rules, and documenting builds

Qualifications

• Associate degree, technical certificate, or equivalent hands-on experience in industrial fabrication.

Responsibilities

• Drive fabrication, installation, modification, startup, and commissioning of new equipment and pilot plant systems in San Francisco and across the US.

Education

Associate degree or technical certificate

Tools

MarianaOS CMMS

P&IDs interpretation

Job description

Mariana Minerals is seeking a highly motivated Fabrication Technician to join our San Francisco Pilot Plant team. You will support the design, installation, and maintenance of our first‑of‑its‑kind refining processes for critical minerals, bridging R&D and operations.

You’ll help build fabrication capabilities and adapt to unique project demands. The role involves traveling to other Mariana sites 10–25% of the time, performing safe maintenance per LOTO and hot work rules, and documenting builds