Staff Process Modeling Engineer
About The Position
Mariana Minerals is seeking a Staff Process Modeling Engineer to support the development of next-generation refining processes for critical minerals. The role develops, validates, and optimizes heat and material balance models using tools such as ASPEN Plus/HYSYS, SysCAD, OLI Studio, or METSIM. It works closely with R&D, pilot operations, and project execution teams to translate laboratory and pilot data into robust, scalable process models that inform the design of first-of-a-kind mineral refining facilities. The engineer serves as a technical leader and subject matter expert for process simulation and modeling across multiple projects. The role develops modeling standards and best practices, mentors junior engineers, and partners with cross-functional teams to support process development from concept through commercial deployment.
Requirements
- 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 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 such as PFDs, P&IDs, equipment datasheets, and control narratives.
Nice To Haves
- Competency with Python or MATLAB for model automation, data processing, and custom calculations.
Responsibilities
- Develop steady-state and dynamic process models to establish heat and material balances for integrated mineral refinery systems.
- Automate equipment and process sizing for reactors, heat exchangers, filters, crystallizers, evaporators, and separators based on model outputs, linking models to datasheets and other engineering tools.
- Develop and maintain process simulation databases, ensuring consistency and traceability between modeling assumptions, test data, and engineering deliverables.
- Calibrate and reconcile models using pilot or plant operating data to ensure model fidelity and predictive accuracy.
- Conduct process optimization studies evaluating energy and heat recovery, recycle strategies, and material-efficiency improvements.
- Develop dynamic process models to validate PLC and DCS programming and evaluate and optimize buffer sizing throughout the design.
- Link process models to CAPEX and OPEX estimation tools, automating technoeconomic model development.
- Document modeling methodologies and results, communicating technical information for design reviews, techno-economic assessments, and regulatory submissions.
- Provide subject matter expertise across projects, develop modeling standards and best practices, and mentor junior engineers.
- Partner with cross-functional teams to support process development from concept through commercial deployment.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
