Is the Staff Mechanical Engineer role remote?

No — this is an on-site role in Houston, TX.

How much experience is required?

At least 9 years of relevant experience for this Staff Mechanical Engineer role.

Where is the role based?

Mariana Minerals is hiring for this position in Houston, TX.

What's the tech stack?

Joblaze extracted these technologies from the posting: Mechanical Engineering, minerals processing.

What seniority level is this role?

Mariana Minerals targets staff-level candidates for this position.

Is this full-time or contract?

Full-time for this Staff Mechanical Engineer role at Mariana Minerals.

Joblaze summary

The Staff Mechanical Engineer at Mariana Minerals is responsible for the hands-on design and deployment of mechanical systems for a pilot plant focused on innovative mineral processing. This role requires expertise in equipment design and maintenance, particularly in areas such as pumps, reactors, and filtration systems, alongside strong problem-solving skills. Ideal candidates will have significant experience in minerals processing or related industries and a collaborative mindset to work with cross-functional teams. Mariana Minerals emphasizes safety and ownership, fostering a culture of innovation and teamwork.

Joblaze insights

Listed 9 days ago on Joblaze — tracked directly from Mariana Minerals's career page.
Mariana Minerals has 77 other open roles including Sr. Technical Recruiter , Process Maintenance Technician, Industrial Electrician.
395 active Mechanical Engineering roles on Joblaze right now.
3 active minerals processing roles on Joblaze right now.
Typical Mechanical Engineering salary we track runs $100,000–$150,250 (median $131,500, across 156 roles).

Quick facts

Is the Staff Mechanical Engineer role remote?: No — this is an on-site role in Houston, TX.
How much experience is required?: At least 9 years of relevant experience for this Staff Mechanical Engineer role.
Where is the role based?: Mariana Minerals is hiring for this position in Houston, TX.
What's the tech stack?: Joblaze extracted these technologies from the posting: Mechanical Engineering, minerals processing.
What seniority level is this role?: Mariana Minerals targets staff-level candidates for this position.
Is this full-time or contract?: Full-time for this Staff Mechanical Engineer role at Mariana Minerals.

From the original posting

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 Minerals is seeking a highly motivated Staff Mechanical Engineer to support our next-generation minerals processing pilot plant in Houston. You will lead the design, integration, and deployment of pilot-scale mechanical systems and processing equipment used to demonstrate and scale innovative refining technologies for critical minerals. This role is highly hands-on and will play a key role in building and maintaining a first-of-its-kind pilot plant. You will work closely with process engineers, technicians, and cross-functional teams to design, install, commission, and improve pilot-scale equipment while ensuring systems are reliable, safe, and scalable to commercial production.

What You’ll Do

Design, specify, and deploy mechanical systems and equipment for pilot-scale mineral processing operations

Work closely with process engineers to translate process requirements into practical mechanical and plant designs

Support installation, troubleshooting, and maintenance of pilot plant equipment including pumps, piping systems, reactors, separators, filtration systems, and material handling equipment

Develop and maintain mechanical design documentation including equipment specifications, layout drawings, piping schematics, and CAD models

Identify opportunities to improve equipment reliability, maintainability, and operational performance

Coordinate with vendors, fabricators, and contractors during equipment procurement and installation

Support safe plant operations by contributing to hazard reviews, equipment safety design, and mechanical integrity programs

Desired Qualifications

B.S., M.S., or PhD in Mechanical Engineering or a related field

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

Demonstrated experience driving equipment design, commissioning, operations, and reliability

Experience designing and maintaining furnaces, pumps and fluid handling systems, pressure vessels and reactors, piping systems and valves, filtration and separation equipment, and materials handling systems

Ability to work closely with cross-functional teams including process engineering, operations, and project execution

Strong troubleshooting and problem-solving skills in hands-on plant environments

Strong commitment to Health, Safety, and Environmental compliance and mechanical integrity standards

Excellent technical writing, communication, and teamwork skills

Comfortable working in fast-paced environments, wearing multiple hats, and managing ambiguity

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!