Staff Process Modeling Engineer

The role

You will develop, validate, and optimize heat and material balance models for mineral refining processes. You will serve as a technical leader for process simulation and mentor junior engineers.

What you will do

• Develop steady-state and dynamic process models for integrated mineral refinery systems.
• Automate equipment and process sizing based on model outputs.
• Develop and maintain process simulation databases.
• Calibrate and reconcile models using pilot or plant operating data.
• Conduct process optimization studies for energy recovery and material efficiency.
• Develop dynamic process models to validate PLC and DCS programming.
• Link process models to CAPEX and OPEX estimation tools.
• Document modeling methodologies and results for design reviews and regulatory submissions.

Required qualifications

• Bachelor's degree or higher in Chemical Engineering, Mechanical Engineering, Process Engineering, Metallurgical Engineering, or a closely related engineering discipline
• 8+ years of experience developing and applying process simulation models for chemical processing, hydrometallurgy, mining, refining, or related industrial process systems
• Proficiency in one or more of the following process simulation tools: ASPEN Plus / HYSYS, SysCAD, OLI Studio / OLI Flowsheet, or METSIM
• Deep understanding of mass transfer, heat transfer, thermodynamics, fluid flow, and reaction engineering
• Experience developing material and energy balances for multi-step, integrated process systems
• Strong grasp of chemical equilibria and phase behavior in aqueous and non-aqueous systems
• Familiarity with data reconciliation, parameter fitting, and model validation using experimental or operational data
• Experience integrating process modeling outputs into EPC deliverables (PFDs, P&IDs, equipment datasheets, control narratives, etc.)

Nice to have

• Competency with Python or MATLAB for model automation, data processing, and custom calculations

About the company

Mariana Minerals is a software-first, vertically integrated minerals company. They aim to supply critical minerals for energy, AI, and defense technologies by combining industry expertise with advanced software and automation.