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Commissioning Engineer

Mariana Minerals· Plant Operations
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Hybrid (Houston, TX), Hybrid (Austin, TX), Hybrid (Moab, UT)Full-timePosted 5d ago

About the role

Commissioning Engineer responsible for electrical and mechanical commissioning scopes, energizing power systems, bringing up equipment and utilities, and safely getting new systems online. Hybrid, travel-heavy role with initial focus on Copper One (Utah) or Lithium One (Texas) and subsequent deployments globally.

Responsibilities

  • Lead commissioning teams at various locations. The candidate must be willing to travel to sites during commissioning.
  • Develop detailed commissioning plans in advance of commissioning activities.
  • Ensure documentation is complete, including LOTO procedures, work instructions, maintenance procedures, detailed plans, schedules, budgets, etc.
  • Own scopes relative to engineering expertise.
  • Lead safe startup practices so everyone gets home safe.
  • Confirm proper installation and functionality of equipment. Lead specific activities on site during dry and wet commissioning.
  • Lead ramping activities for assigned commissioning area(s).
  • Ensure equipment is functional, including controls functionality.
  • Train and hand over equipment to onsite operators and maintenance personnel.
  • Serve as a technical expert to assist in process engineering after handover to operations as needed.
  • Simplify commissioning procedures, then assist in building tools in MarianaOS to automate and scale.
  • Document and share lessons learned so every site starts from a stronger playbook.
  • Support design teams and projects at other sites between commissioning cycles.
  • Contribute to design reviews and HazOps during the design phase.
  • Travel up to 80%, including extended site assignments during onsite commissioning. Short-notice trips are possible.

Qualifications

  • Bachelor’s degree or higher in chemical, mechanical, electrical, or a related engineering field preferred, or proven hands-on experience commissioning industrial systems.
  • Hands-on commissioning experience on greenfield or new-plant startups, with deep expertise in electrical or mechanical systems and working knowledge of the other.
  • Background in battery/EV, semiconductor, data centers, advanced manufacturing, or similar fast-paced industrial environments strongly preferred.
  • Working knowledge of equipment common in mining and/or refining and plant utilities.
  • Ability to read and mark up single-lines, P&IDs, schematics, and mechanical drawings.
  • Desire to help build a smart P&ID system.
  • Preferred: PLC/controls and instrumentation startup experience, experience at a company that designs, installs, and commissions its own equipment, and comfort using AI tools to speed up your work.
  • Collaborative by default. You share knowledge openly and make the team around you better.
  • Strong safety mindset, with experience leading safe energization, LOTO, and startup practices (NFPA 70E).
  • Valid driver’s license.

Skills

Required:Commissioning leadershipProject planning and documentationElectrical systemsMechanical systemsSafety and LOTO
Last updated Oct 21, 2026. Interested? Apply on the company site.

About Mariana Minerals

We to the Future of Minerals, verify the mineral supply chain.

Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.

software-firstmineralsenergyAIdefense
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