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.

We’re building modern mining and processing operations, and we’re looking for people who want to keep them running and grow with us. This is open to students who have finished a technical program or are about to, and to people with industrial or mechanical experience who are new to mining.

Maintenance techs are the backbone of any mine site. It’s hands-on work with real equipment, new problems to solve every day, and skills that stay in demand across industries. Join early and you’ll learn from experienced techs, see how a modern operation comes together, and build a career with a company that’s just getting started.

Program details are still coming together, but we’re connecting early with people who want to help build this team.

What You Could Learn

• Mechanical maintenance: pumps, conveyors, crushers, hydraulics, and heavy equipment
• Electrical maintenance: motors, controls, VFDs, and instrumentation
• Preventive maintenance and real-time troubleshooting across the mine and processing plant
• Mine site safety, including MSHA training, lockout/tagout, arc flash (NFPA 70E), rigging, confined space, and working at heights

Who Should Apply

• Students in electrical, mechanical, or industrial maintenance programs, and recent trade school or technical program grads
• Welders, fabricators, heavy equipment operators, drillers, or facilities techs with a stable work history who want to build maintenance skills
• Experienced mechanics, electricians, or military-trained techs looking to move into mining
• Comfortable with hand and power tools (experience helps but isn’t required for students)

What Makes You a Fit

• You never cut corners to save time. You follow procedures, speak up when something doesn’t look right, and look out for the people around you.
• You see a job through, own your mistakes, and keep pushing until the problem is actually fixed, even when the work is dirty or tough, or the weather isn’t cooperating.
• You’re curious about how things work and always looking for a simpler, better way to do the job. You want to understand the systems, not just follow the steps.
• You ask questions, share what you learn, and jump in wherever your crew needs you. You know the best work gets done together.

Working Environment & Physical Requirements

This is a mine site, and safety comes first every day.

• Outdoor and industrial work with dust, loud noise, and weather from summer heat to winter cold
• Required PPE: hard hat, steel-toe boots, safety glasses, high-vis clothing, and hearing protection, plus respirators and fall protection when needed
• Following site safety rules at all times
• Lifting up to 50 lbs, climbing, working at heights, and entering confined spaces

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!