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Mariana Minerals

Sr./Staff Process Controls Engineer

Remote · Full-time

$150K–$200K

Series B · $310M · 93d ago Posted 1mo ago
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Why join Mariana Minerals?

This could be huge if the minerals behind energy, AI and defense hardware get produced on software timelines, and Mariana Minerals, a Houston mining company, is betting it can. A $310M Series B led by BHP Ventures and Andreessen Horowitz, bigger than 97% of Series B rounds this half, gives it the capital to try. With 47 new roles in 30 days, 38 of them in engineering, the build is only getting started.

JustBacked's take, based on Mariana Minerals's own site and its funding and hiring data.

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 Process Controls Engineer to work on building the critical minerals supply chain.

As a Process Controls Engineer at Mariana Minerals, you will lead the development and deployment of first-of-its-kind chemical refining processes, while also playing a critical role in the development of software for capital project execution and automated plant optimization. Responsibilities will include leading equipment and plant-wide controls infrastructure and programming scopes from concept through to design, installation, commissioning, ramp, and handover to the operations team, and supporting the buildout of an in-house engineering team.

What You’ll Do

  • Develop standards for controls programming

  • Lead equipment scopes from concept and modeling validation, through procurement, engineering, fabrication, installation, commissioning, and ramp

  • Manage external equipment providers, technology licensors, and engineering companies to deliver fully integrated and functional mineral refining scopes

  • Drive cross-functional teams of lab technicians, pilot plant engineers, process engineers, and project engineers to lead the technical equipment scale-up and de-risk the commercialization of novel mineral refining processes

  • Support the hiring, mentorship, and day-to-day management of junior process engineers

  • Develop technoeconomic models of new project opportunities, acquisition targets, and new technologies to inform business development

  • Prepare and present bankable engineering deliverables to support project financing partners due diligence reviews

  • Identify, evaluate, and implement process engineering and project management software tools

  • Identify and support opportunities for the software and machine learning teams to automate capital project execution workflows and develop advanced plant control algorithms

What You’ll Bring

  • Strong understanding of engineering fundamentals and demonstrated ability to leverage the understanding to solve challenging problems

  • Experience with equipment engineering and design. Including but not limited to:

  • Brownfield equipment modifications and upgrades

  • Greenfield equipment design

  • Evaluation and optimization of operating equipment

  • Experience with the following industries and/or production environments:

  • Industrial manufacturing

  • Large-scale mining or mineral processing

  • Large-scale chemical production processes

  • Engineering, procurement, and construction firms

  • Experience with direct or indirect leadership of engineers and technicians

  • Experience with project management and execution of medium to large scale (>$5M) capital projects

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!