Sr./Staff Mechanical Engineer

The role

You will lead the development and deployment of chemical refining processes and support software development for project execution and plant optimization. You will design, build, and commission mineral processing and metallurgical refining equipment.

What you will do

• Lead mechanical engineering scopes from concept and feasibility through detailed design, procurement, fabrication, installation, and commissioning
• Manage vendors throughout the equipment lifecycle
• Develop site-wide and area-level plant layouts
• Prepare mechanical equipment specifications, data sheets, and requisition packages
• Perform static equipment design of tanks, silos, bins, pressure vessels, and other stationary equipment
• Conduct finite element analysis to validate equipment and component designs
• Design, evaluate, and integrate solids-handling and material-conveyance systems
• Support development of 3D models and piping/mechanical interface layouts
• Review vendor drawings and calculations
• Collaborate with multidisciplinary EPC teams

Required qualifications

• Bachelor’s degree in Mechanical Engineering or a related engineering discipline
• Strong understanding of engineering fundamentals
• Experience preparing and reviewing mechanical equipment specifications, vendor documentation, and engineering deliverables for brownfield modifications and greenfield facilities
• Ability to complete static equipment design of tanks, silos, bins, vessels, and other stationary equipment, including code-based mechanical and structural calculations
• FEA capabilities with proficiency in finite element analysis tools
• Working knowledge of relevant industry standards and codes, such as ASME and API
• Ability to work effectively with cross-functional teams, manage competing priorities, and deliver high-quality engineering packages under schedule constraints
• Proficiency in mechanical design software such as AutoCAD

Nice to have

• Hands-on experience with solids-handling and conveyance equipment including silos, bins, hoppers, chutes, bulk storage systems, feeders, conveyor systems, screens, crushers, and material-transfer equi
• Experience with pyrometallurgical processes and equipment, such as rotary kilns, electric arc furnaces, converters, dryers, and flash kilns
• Familiarity with industrial and process-industry environments such as mining, mineral processing, cement, aggregate, bulk-materials handling, chemical or industrial manufacturing, power generation, or
• Experience with fluids, thermal, and Multiphysics CFD simulations

About the company

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.