---
title: 'Electrician at Mariana Minerals'
canonical: 'https://feeny.ai/job/electrician-mariana-minerals-east-50vs2farzxq5'
type: 'job'
last_seen: '2026-09-11'
---

# Electrician at Mariana Minerals

- **Company:** Mariana Minerals
- **Location:** East, TX
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-09-08
- **Last confirmed live:** 2026-09-11
- **Apply:** https://jobs.ashbyhq.com/marianaminerals/14e3d269-e211-4caf-9009-4f008c0e02eb/application

**Skills:** Electrical systems maintenance, Troubleshooting, Blueprint reading, One-line diagrams, Preventive maintenance, PLC (Programmable Logic Controllers), Hydraulics, Pneumatics, Machine tools, Electronic test equipment, CMMS (Computerized Maintenance Management System), OSHA regulations, DOT regulations, Electrical codes, Hydrometallurgy experience, Mining experience, Battery material production experience

> The Electrician provides electrical support for refinery operations in East Texas, maintaining, repairing, and testing electrical, communication, control, and measurement equipment. The role involves troubleshooting industrial systems, performing preventive maintenance, and ensuring compliance with safety and regula...

## Job description

## 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.

## POSITION DESCRIPTION:

The Mariana Minerals Electrician will provide competent and effective electrical support to our Refinery operations in East Texas. Our Electrician will be primarily responsible for maintaining, repairing, testing, adjusting, and assisting in the installation and removal of all electrical, communication, control, and measurement equipment at assigned locations. Our Electrician will perform a variety of operations, maintenance, and construction tasks to maintain safe operations of the refinery and its related facilities all while ensuring the facility is operated and maintained in compliance with company and applicable regulatory standards and practices.

## KEY RESPONSIBILITIES AND ACCOUNTABILITIES:

- Understand how to read and translate the information found within building and process blueprints and one-line diagrams to install outlets, circuits, load centers and other forms of electrical equipment
- After installing the electrical equipment, test all connections to ensure all components are working properly and safely.
- Troubleshoot and diagnose electrical issues in industrial equipment and processes using experience, system knowledge and proper instruments appropriate to the voltages and currents encountered.
- Perform preventive maintenance on electrical systems to include disassembly, cleaning, reassembly, and calibration.
- Meet and follow local, state and national electrical codes.
- Communicate with management, engineers, mechanics, and equipment operators to advise them if there are any potential electrical hazards.
- Examine jobs to be done and determine scope and best way to accomplish the work.
- Ensure the shop is maintained in a safe and orderly fashion. Ensure the safety needs are given a top priority in operations support and work execution.
- Update the computerized maintenance management system (CMMS) as necessary to maintain accurate plant asset historical records.
- Have complete knowledge of plant's processes and packaging systems.
- Protect the integrity and quality of product at all times.
- Recommend equipment to be included in preventive maintenance programs.
- Suggest improvements to all maintenance processes, including planning scheduling, preventive maintenance, corrective maintenance, CMMS, storeroom operations, etc.
- Maintain close contact with assigned maintenance crew, the production supervisor and equipment production operator technicians.
- Maintain necessary records and files and distributes meaningful and accurate control reports.
- Complies with DOT and OSHA health, safety and environmental requirements and follows safety philosophy and procedures developed by the Company including: applicable environmental, health and safety rules, procedures, and accepted safe work practices, the use of appropriate personal protective equipment and safety systems, and the reporting of workplace hazards and injury or illness arising from workplace activities; observes the workplace to identify conditions or behaviors that should be corrected and takes appropriate action.

## QUALIFICATIONS AND EXPERIENCE:

The qualified candidates will possess a strong combination of knowledge and experience in the following:

- Prefer an Associate’s degree in electronics/electrical, instrumentation or a related technical field or its equivalent in experience.
- Prefer 3-5 years experience as an operations/maintenance technician, or previous experience in electronics.
- Ability to test, setup, troubleshoot, and maintain a variety of electronic/electrical and mechanical equipment to include but not limited to electrical motors (medium and low voltage), flow computers, programmable logic controllers (PLC), personal computers (PC), routers and switches, fluid level instruments such as radar gauges, AC and DC relay systems, switchgear, breakers, motor control centers, contactors, electrical and hydraulic, valve actuators, centrifugal and positive displacement pumps, pump seals, as well as various instrument and control equipment.
- Knowledge of system operation, pipeline and facility layout, and equipment capability.
- Ability to follow manufacturers specifications and schematics.
- Ability to read and interpret a variety of technical data, such as schematics, one-line diagrams, and technical orders relating to the electrical trade.
- Able to calculate electrical circuit load requirements.
- Comprehensive knowledge of the operation, capabilities, and limitations of complex electrical power and distribution.
- Maintenance background, which includes hydraulics, controls, electrical, PLC’s, machine tools and pneumatics.
- Skill in troubleshooting electrical problems on large projects and applying test procedures.
- Skill in the use of hand and power tools of the electrician trade to include a variety of electronic, electrical, or electromechanical test and measurement equipment.
- Knowledge of safety, environmental, and security regulations, practices, and procedures.
- Ability to utilize computer hardware and software to manage, record, and evaluate company information.

Desirable experience in the following industries:

- Hydrometallurgy
- Mining
- Battery material production

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!

## About Mariana Minerals

## Company Overview
- **One-liner**: Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.
- **Entity Type**: Private (Series A, $85M funding in July 2025)
- **Headquarters**: San Francisco, California, United States
- **Founded**: Not publicly available
- **Founders**: Turner Caldwell (Co-Founder & CEO)

## Core Business
- **Primary industry**: Metal Ore Mining / Critical Minerals
- **Target customers**: B2B – energy, AI, and defense supply chains (including downstream manufacturers and government entities)
- **Mission or purpose**: "Create a future of critical mineral abundance" by reimagining the global minerals supply chain with software, automation, and data-driven decision making.

## Products & Services
- **Copper One (formerly Lisbon Valley Copper Mine)**: World’s first autonomous mine, located in Utah. Produces copper using integrated automation and software control. Restarted production in April 2026.
- **Lithium One**: Lithium project (on the roadmap or early development).
- **Other mineral projects**: Graphite, Uranium, Rare Earth Metals, Cobalt, Nickel, Aluminium – at various stages (stealth or roadmap).
- **CapitalProjectOS**: Internal software platform for capital project management (mentioned in leadership bio).
- **Technology Stack**: React, dbt, TypeScript, Python, TensorFlow, PyTorch, microservices, SCADA, Autodesk, and many others – indicating a strong software engineering backbone.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Total funding – $85M Series A (July 2025, 1 investor)
- **Notable Investors/Partners**: Lead investor not publicly disclosed (Andreessen Horowitz was pitched but not confirmed as an investor). Partners include Bot Auto, WeRide, Pronto, Atoms (based on LinkedIn mentions). Also works with UMA (Utah Mining Association).
- **Growth Signals**: Headcount grew 3,575% YoY to 107 employees (as of mid-2026). 73 active job postings. Opened the world’s first autonomous mine (Copper One) in April/May 2026, generating significant industry news and social media engagement.

## Competitive Advantages
- **Software-first approach**: The company builds automation and data systems from the ground up, rather than layering tech onto legacy mining operations. This enables fully autonomous mining.
- **Vertical integration**: They develop, own, and operate mineral projects, controlling the entire value chain from extraction to processing.
- **Deep tech stack**: Use of AI/ML (TensorFlow, PyTorch), simulation, and real-time control systems to optimize mining operations.
- **First-mover in autonomous mining**: Copper One is claimed to be the world’s first autonomous mine, giving them a significant lead in operational efficiency and safety.

## Strategic Focus
- Scale autonomous mining operations beyond copper (lithium, graphite, uranium, etc.)
- Secure domestic supply of critical minerals for U.S. energy, AI, and defense needs.
- Continue aggressive hiring across engineering, operations, and field roles.
- Expand from Utah to additional sites (Houston engineering office, potential new projects).

## Why Work Here
- **Culture principles**: "Extreme Ownership", "Engineer Out Requirements, Then Automate", "Share Your Legos" – emphasizing accountability, simplification, and collaboration.
- **Work environment**: High-growth startup with a mission-driven focus on critical infrastructure. Offices in San Francisco (HQ), Houston (Engineering), and La Sal, Utah (mine site). Hybrid/remote policy not explicitly stated, but multiple office locations suggest flexibility for field vs. office roles.
- **Notable perks**: Opportunity to work on cutting-edge autonomous systems and AI in a traditional industry. Strong engineering culture with modern tech stack (React, Python, ML). Rapid career growth due to company expansion.
- **Talent sources**: Attracts talent from Tesla, Redwood Materials, Lilac, ExxonMobil, Amazon Web Services, and other tech/energy companies – indicating a high-caliber peer group.

## Sources
1. [marianaminerals.com](https://marianaminerals.com/)
2. [marianaminerals.com/careers](https://marianaminerals.com/careers)
3. [marianaminerals.com/about](https://marianaminerals.com/about)
4. [jobs.ashbyhq.com/marianaminerals](https://jobs.ashbyhq.com/marianaminerals)
5. [linkedin.com/company/mariana-minerals](https://www.linkedin.com/company/mariana-minerals)

## Other roles at Mariana Minerals

- [Sr./Staff Process Engineer - Detailed Engineering and Plant Design](https://feeny.ai/job/sr-staff-process-engineer-detailed-engineering-and-plant-design-mariana-m9xewg6hdcc5) — Houston, TX
- [Industrial Electrician](https://feeny.ai/job/industrial-electrician-mariana-minerals-moab-snerjqgb4qbh) — Moab, UT
- [Sr. Technical Recruiter](https://feeny.ai/job/sr-technical-recruiter-mariana-minerals-san-francisco-hr9b2676c4vw) — San Francisco, CA
- [R&D Metallurgist](https://feeny.ai/job/r-d-metallurgist-mariana-minerals-san-francisco-2y0a92fe9ese) — San Francisco, CA
- [Maintenance Mechanic](https://feeny.ai/job/maintenance-mechanic-mariana-minerals-moab-bc9jcgbeg61b) — Moab, UT
- [Process Maintenance Technician](https://feeny.ai/job/process-maintenance-technician-mariana-minerals-moab-c6pyeb53jmef) — Moab, UT
- [Mobile Maintenance Supervisor](https://feeny.ai/job/mobile-maintenance-supervisor-mariana-minerals-moab-0zyyzma9tm1n) — Moab, UT
- [Sr./Staff Pyrometallurgical Process Engineer](https://feeny.ai/job/sr-staff-pyrometallurgical-process-engineer-mariana-minerals-houston-dpv5c9qyznbb) — Houston, TX
- [Staff Process Controls Engineer - Networking and Systems Administration](https://feeny.ai/job/staff-process-controls-engineer-networking-and-systems-administration-mariana-yysg2twzjx6r) — San Francisco, CA
- [Staff Process Controls Engineer - Pilot Plant](https://feeny.ai/job/staff-process-controls-engineer-pilot-plant-mariana-minerals-san-francisco-f58dynjt6zw6) — San Francisco, CA