Mariana Minerals logo

Mechanical Engineer

Mariana MineralsSan Francisco HQ
Apply Now
Mariana Minerals logo

Mechanical Engineer

Mariana Minerals

Apply Now

Mechanical Engineer role at Mariana Minerals focused on designing, building, and commissioning mechanical systems for chemical refining pilot and modular commercial-scale plants. The role combines mechanical design leadership with development of first-principles models and software-driven plant optimization, partnering with multidisciplinary EPC teams to deliver end-to-end equipment scopes from concept through handover to operations.

Qualification

  • Strong understanding of engineering fundamentals and demonstrated ability to leverage the understanding to solve challenging problems
  • Experience preparing and reviewing mechanical equipment specifications, vendor documentation, and engineering deliverables for brownfield modifications and new facilities
  • Proven ability to design, evaluate, and integrate solids-handling and material-conveyance systems (silos, bins, hoppers, feeders, conveyors, dust-control) as part of process equipment packages
  • Experience developing first-principles based models of refining equipment and processes for plant optimization
  • Experience developing site-wide plant layouts and ensuring integration with process, structural, civil, and electrical disciplines
  • Experience in pilot-scale and modular commercial plant design, fabrication, installation, and commissioning
  • Ability to review vendor drawings and calculations and ensure compliance with codes, standards, and operability/maintainability expectations
  • Strong collaboration skills to work effectively with multidisciplinary EPC teams and stakeholders
  • Willingness to contribute across the project lifecycle—from concept to handover and startup

Responsibility

  • Lead mechanical engineering scopes across project phases—from concept and feasibility through detailed design, procurement, fabrication, installation, and commissioning
  • Develop site-wide and area-level plant layouts optimizing equipment arrangement, maintainability access, constructability, safety, and integration with other disciplines
  • Prepare mechanical equipment specifications, data sheets, and requisition packages for process and solids-handling equipment; support technical bid evaluations and vendor selection
  • Design, evaluate, and integrate solids-handling and material-conveyance systems (silos, bins, hoppers, feeders, conveyors, bucket elevators, chutes, dust-control)
  • Support development of 3D models and piping/mechanical interface layouts ensuring alignment with process, structural, civil, and electrical requirements
  • Review vendor drawings and calculations to ensure mechanical design compliance with project requirements, codes, standards, and operability/maintainability expectations
  • Collaborate with multidisciplinary EPC teams—including process, structural, piping, electrical, instrumentation, and construction management—to deliver cohesive and constructible engineering packages
  • Provide mechanical engineering support during construction and commissioning, including responding to RFIs, reviewing field changes, and assisting with equipment installation and start-up
  • Lead equipment scopes from concept through to design, installation, ramp, and handover to the operations team

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