---
title: "Pilot Plant Supervisor"
company: "Mariana Minerals"
company_url: "https://www.remjobs.works/companies/mariana-minerals"
url: "https://www.remjobs.works/job/mariana-minerals-pilot-plant-supervisor-f7d13f0b-bff6-4453-9b6e-7ecf849906c9"
apply_url: "https://jobs.ashbyhq.com/marianaminerals/85e74a45-d4b6-424e-a354-d363a6ed1673"
workplace: onsite
location: "San Francisco HQ"
employment_type: full-time
seniority: mid
role: other
region: united-states
salary: "$100,000–$140,000 per year"
date_posted: 2026-09-04T22:46:54.174Z
first_seen_by_remjobs: 2026-09-05T08:28:22.654Z
---

# Pilot Plant Supervisor

**Mariana Minerals** · San Francisco HQ

Salary: $100,000–$140,000 per year

Apply: https://jobs.ashbyhq.com/marianaminerals/85e74a45-d4b6-424e-a354-d363a6ed1673

## 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.

### The Role

Mariana Minerals is looking for a highly motivated Operations Supervisor to join our San Francisco Pilot Plant team. You will oversee a team of high performing technicians who 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.

### What You'll Do

- Serve as the direct lead for a team of high performing operations technicians

- Help drive performance reviews, scheduling, training, and hiring

- Collaborate with engineers, R&D scientists, and the technicians to operate and monitor mineral extraction chemical processes

- Provide off-hours support on evenings and weekends to plant upsets and high priority projects

- Create and sustain EHS programs and policies regarding chemical handling, hazard assessment, high risk activities, PPE and waste management compliance

- Ensure high-quality data capture from the plant via sampling, basic laboratory measurements, instrument uptime, and MarianaOS usage

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

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

### Desired Qualifications

- 2+ years of experience in a supervisory or lead role

- 5+ years of experience operating pilot plant or commercial scale industrial equipment in the minerals processing, chemicals, specialty materials, oil & gas, biotech, or similar industry

- Demonstrated leadership in 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 overseeing hands-on equipment installation, modification, and troubleshooting

- Knowledge of basic process chemistry (pH, reaction stoichiometry, etc)

- Experience using engineering documents such as PFDs, control narratives, and P&IDs

- Excellent written and verbal communication skills

- 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-supervisor-f7d13f0b-bff6-4453-9b6e-7ecf849906c9