Staff Mechanical Engineer
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 ...