---
title: 'Procurement Manager, Mobile Equipment at Mariana Minerals'
canonical: 'https://feeny.ai/job/procurement-manager-mobile-equipment-mariana-minerals-san-francisco-js4g8wmj5qeg'
type: 'job'
last_seen: '2026-10-23'
---

# Procurement Manager, Mobile Equipment at Mariana Minerals

- **Company:** Mariana Minerals
- **Location:** San Francisco, CA
- **Compensation:** $130k–$190k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-10-21
- **Last confirmed live:** 2026-10-23
- **Apply:** https://jobs.ashbyhq.com/marianaminerals/177da57c-e591-4fba-92cd-ee5e7cdac125

## 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.

## The Role

Mariana is hiring a Procurement Manager, Mobile Equipment to own the sourcing, contracting, and lifecycle management of mobile and heavy equipment across our operating sites and projects, including haul trucks, excavators, loaders, fleet vehicles, and forklifts.

This is a hands-on buying role with significant field exposure. You will work closely with operations and engineering teams to understand equipment needs, evaluate options, negotiate with OEMs and dealers, and manage the equipment fleet commercially. This role covers equipment procurement across all stages of site activity. You will travel frequently to sites to assess needs, inspect equipment, and build relationships with site teams.

## What You'll Do

- Own procurement of mobile equipment across Mariana's operating sites and projects, from initial specification through contract execution, delivery, and ongoing lifecycle management
- Work with operations and engineering teams to define equipment requirements; evaluate OEM and dealer options against technical and commercial criteria
- Negotiate pricing, warranty, parts and service terms, and end-of-life provisions with OEMs, dealers, and rental providers
- Identify opportunities to standardize fleet composition across sites to reduce total cost of ownership and simplify maintenance
- Manage supplier relationships for mobile equipment categories; monitor OEM and dealer performance and resolve commercial issues
- Coordinate with logistics on equipment delivery, transport permitting, and mobilization to site
- Travel frequently to operating and project sites to assess equipment needs, inspect assets, and support site teams

Desired Qualifications

- Bachelor's degree in engineering, supply chain, business, or a related field; equivalent technical experience will be considered
- 5-10 years of procurement experience in mobile equipment, fleet, or capital equipment categories in mining, construction, oil and gas, or a related industrial sector
- Hands-on negotiation experience with OEMs and dealers; track record of securing favorable commercial terms
- Technical familiarity with mobile mining or industrial equipment sufficient to evaluate options and engage credibly with operations teams
- Willingness and ability to travel frequently to operating and project sites (25%-50%)
- Comfortable operating with ambiguity and limited structure; takes ownership and figures it out
- Proficient with software tools for contract tracking, fleet management, and reporting

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)

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- [Staff Process Modeling Engineer](https://feeny.ai/job/staff-process-modeling-engineer-mariana-minerals-houston-jdxhxvmnyejh) — Houston, TX
- [Commercial Manager, Energy & Utilities](https://feeny.ai/job/commercial-manager-energy-utilities-mariana-minerals-san-francisco-v9bbex69xwyh) — San Francisco, CA
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