---
title: "Pilot Plant Technician (Night Shift)"
company: "Mariana Minerals"
company_url: "https://www.remjobs.works/companies/mariana-minerals"
url: "https://www.remjobs.works/job/mariana-minerals-pilot-plant-technician-night-shift-6d05e2b2-f310-4792-8f65-dafe2a87c09a"
apply_url: "https://jobs.ashbyhq.com/marianaminerals/8ca25251-ed4b-4929-94f1-6aa718e06dc4"
workplace: onsite
location: "San Francisco HQ"
employment_type: full-time
seniority: mid
role: other
region: united-states
salary: "$35–$45 per hour"
date_posted: 2026-09-01T17:25:58.135Z
first_seen_by_remjobs: 2026-09-05T08:28:22.654Z
---

# Pilot Plant Technician (Night Shift)

**Mariana Minerals** · San Francisco HQ

Salary: $35–$45 per hour

Apply: https://jobs.ashbyhq.com/marianaminerals/8ca25251-ed4b-4929-94f1-6aa718e06dc4

## 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.

## About the role

### About Mariana Minerals

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 reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.

### Role Overview

Mariana Minerals is looking for a highly motivated technician to join our San Francisco Pilot Plant team on the night shift. You will support the design, deployment, and operation of first-of-its-kind refining processes for critical minerals, while also supporting development of software for automated plant optimization. This position is highly hands-on and will play a critical role in bridging R&D and Operations, ensuring processes are robust, safe, cost-effective, and suitable for commercial production.

### Potential Schedule

- Front End Nights: 6:00pm – 6:00am Sunday thru Tuesday/Wednesday

- Back End Nights: 6:00pm – 6:00am Wednesday/Thursday thru Saturday

### What You’ll Do

- 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

- Take ownership of plant cleanliness and organization, ensuring work areas, tools, and equipment are well-maintained and ready for operations

- Perform routine maintenance, inspections, and basic mechanical repairs; document findings & actions in a Computerized Maintenance Management System (CMMS)

- Create and maintain procedures, experimental records, shift reports, and other critical operations documents

### What You’ll Bring

- 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 the minerals processing, chemicals, specialty materials, oil & gas, biotech, or similar industry

- Prior exposure to core plant safety work processes such as Lockout/Tagout (LOTO), hot work permitting, confined space entry, and safe work permitting systems

- 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

- Basic knowledge of inorganic chemistry, pH, and reaction stoichiometry a plus

- Experience using engineering documents such as PFDs, control narratives, or P&IDs is a plus

- Climb stairs, stand for extended periods of time, and safely lift up to 50 lbs

#### Our culture is built on four principles:

**Everyone Gets Home Safe. **We never put speed or cost ahead of people.

**Extreme Ownership. **We take full responsibility for outcomes, relentlessly driving toward solutions.

**Engineer Out Requirements, then Automate. **We simplify, optimize, and then automate for scale.

**Share Your Legos.** We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.

**Join us as we build the future of responsible mineral sourcing and supply!**

---

Source: Mariana Minerals's own career page, read by RemJobs. Canonical HTML version: https://www.remjobs.works/job/mariana-minerals-pilot-plant-technician-night-shift-6d05e2b2-f310-4792-8f65-dafe2a87c09a