Technology Process Engineering & Automation

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 how minerals are sourced, refined, and optimized by combining deep industrial expertise with software, automation, and data-driven decision-making. Mariana Minerals is seeking a highly motivated Process Engineer to support process development activities & scale-up experiments at our CopperOne mine outside of Moab, UT. You will oversee engineering and operations of our bioleaching columns and other pilot scale equipment supporting current and future mine projects. This role is highly hands‑on and will play a key role in bridging R&D and operations, helping scale technologies from laboratory development through pilot demonstration and ultimately to commercial mining. You will work closely with R&D, technicians, metallurgists, and cross‑functional teams to ensure processes are robust, efficient, and suitable for future development & scale‑up.

Operate, troubleshoot, and improve leaching columns and other pilot‑scale processing equipment in collaboration with technicians

Design and execute pilot‑scale experiments to bridge learnings between R&D and commercial mine scale

Analyze experimental and operational data to identify opportunities for process optimization and scale‑up

Support development of automated monitoring and optimization tools in collaboration with software and machine learning teams

Ensure safe operations by supporting EHS, hazard assessments, risk management, and management of change processes

or PhD in Chemical Engineering, Mining Engineering, Metallurgy or a related field

3+ years of experience in mining, operations, process scale‑up, or plant design in minerals processing, chemicals, specialty materials, oil & gas, or related industries

Proven ability to utilize software and automation to improve process performance while reducing errors and resource intensity

Strong commitment to Health, Safety, and Environmental compliance

Excellent technical writing, communication, and teamwork skills

We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected status.

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