✦ Luna Orbit — Engineering (Non-Software)

Process Engineer

at United States Steel

📍 Tucson, AZ Unknown Posted April 11, 2026
Type Not Specified
Experience senior
Exp. Years 8 + years
Education B.S. in Mining or Process Engineering; M.S. in Mining or Process Engineering
Category Engineering (Non-Software)

This Process Engineer role is responsible for process and design across mineral and chemical process plants. The position covers scoping through detailed engineering and execution, producing NI 43-101 technical reports, and leading modeling and project work from start to finish.

  • Own process engineering and plant design activities
  • Prepare and write technical reports per National Instrument 43-101
  • Perform process modeling for mineral and chemical plants
  • Conduct equipment sizing and selection and review plant layout
  • Lead proposal development and project management end-to-end

The role focuses on process modeling and design, including equipment sizing and selection and review of plant layout. It also involves bias test analysis, proposal development with cost estimating, and project management, supported by tools such as Microsoft Office 365, Excel spreadsheets, METSIM, and Bruno.

The ideal candidate is a senior process engineer with 8+ years of experience in mining or process engineering and both a B.S. and M.S. in the field. They are a Registered Professional Engineer and a Qualified Person as defined by NI 43-101, with strong process modeling, equipment sizing, plant layout review, and technical report writing experience.

B.S. Mining or Process EngineeringM.S./Mining or Process Engineering8 + years of experience in Mining or Process EngineeringRegistered Professional EngineerQualified Person as defined by NI 43-101
Microsoft Office 365ExcelMETSIMBruno
Process EngineeringNational Instrument 43-101NI 43-101Process Modelingequipment sizing and selectionplant layout reviewprocess simulation toolsBias Test analysiscost estimatingproposal developmentProject ManagementMicrosoft Office 365Excel SpreadsheetsMETSIMBruno
process and designProcess Engineeringscoping through detailed engineering and execution of planstechnical reportsNational Instrument 43-101Process Modeling (Mineral and chemical plants)equipment sizing and selectionreview of plant layoutprocess plant operationsprocess simulation toolsprocess design methodsprocess modelingBias Test analysisbias/non-bias resultscost estimatingproposal developmentfinancial and feasibility studies/modelingMicrosoft Office 365programing Excel SpreadsheetsExcel spreadsheetsMETSIMBruno
excellent verbal and written communicationinterpersonal skillsdetail-orientedability to meet project deadlinesprovides guidance and/or leadership to othersindirect reportspeersor managersreasoning skills/abilitiesself-managed (implied not explicit)

Required

Registered Professional EngineerQualified Person as defined by NI 43-101
Industry Manufacturing
Job Function Deliver process engineering design, modeling, and NI 43-101 reporting for mineral and chemical process plants.
Role Subtype Process Engineer
Process EngineerProcess EngineeringNational Instrument 43-101NI 43-101Qualified PersonRegistered Professional EngineerB.S. Mining or Process EngineeringM.S./Mining or Process Engineering8 + years of experienceProcess ModelingMineral and chemical plantsequipment sizing and selectionplant layoutprocess simulation toolsprocess design methodsBias Test analysisbias/non-Bias resultscost estimatingproposal developmentProject ManagementMicrosoft Office 365programing Excel SpreadsheetsExcel SpreadsheetsMETSIMBrunobase metalsprecious metal mineral processingfinancial and feasibility studies/modeling

B.S. Mining or Process Engineering, M.S./Mining or Process Engineering, 8 + years of experience in Mining or Process Engineering, Registered Professional Engineer, Qualified Person as defined by NI 43-101

Apply for this Position →

Get matched to jobs like this

Luna finds roles that fit your skills and career goals — no endless scrolling required.

Create a Free Profile