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Mariana Minerals

Contract Piping Design Engineer

San Francisco HQ$75k–$120kcontractmidAdded today

About this role

Mariana Minerals seeks a Piping Design Engineer to lead piping system design from concept through fabrication drawings using AutoCAD Plant 3D. You'll configure projects, develop process and instrumentation diagrams, create plot plans, and define requirements for third-party integration in a software-driven minerals company.

What you'll do

  • Configure and manage new projects in AutoCAD Plant 3D with Data Manager setup
  • Draft process flow diagrams (PFDs) and piping & instrumentation diagrams (P&IDs)
  • Develop plot plans and generate isometric piping models
  • Define technical requirements for third-party 3D equipment models and P&ID integration
  • Specify detailed engineering requirements for EPC contractors
  • Lead full piping scopes from concept design to fabrication and construction drawings

What they're looking for

  • AutoCAD Plant 3D (5+ years)
  • CAD administration and project configuration
  • 2D drafting (PFDs, P&IDs, plot plans)
  • 3D piping design and isometric generation
  • Process engineering and instrumentation knowledge
  • Technical requirements definition
  • Data Manager and Smart P&ID tools
  • Industrial plant design principles
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Mariana Minerals

Mariana Minerals develops autonomous mining technology and critical minerals processing infrastructure, including software and hardware systems for self-operating vehicles and advanced refining facilities. The company is hiring Process Safety Engineers, Mechanical Engineers, Mechatronics Engineers (in both autonomy and hardware specializations), and Safety Specialists to build out their mining operations and safety programs.

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Likely interview questions

  • Walk us through your most complex piping design project in AutoCAD Plant 3D—what were the key challenges and how did you resolve them?
  • Describe your experience setting up Data Manager and configuring Smart P&IDs from scratch; what best practices did you establish?
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