Mariana Minerals

4 months ago

Process Modeling Engineer

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 2 hours agoStatus: Live

Job Summary

Process Modeling Engineer at Mariana Minerals focusing on developing, validating, and optimizing heat and material balance models for next-generation mineral refining. You’ll use ASPEN, SysCAD, OLI, or METSIM to translate lab data into scalable process models, automate equipment sizing, calibrate models with pilot data, and link models to technoeconomic tools for EPC deliverables in a collaborative R&D environment.

Location: San Francisco, Houston

Workplace: Onsite

Employment Type: Full time

Job Function: Communications, PR & Community

Key Responsibilities

•Develop steady-state and dynamic process models to establish heat and material balances for integrated mineral refinery systems using ASPEN, SysCAD, OLI, or METSIM.
•Automate equipment and process sizing (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/heat recovery, recycle strategies, and material efficiency improvements.

Pay and Benefits

Salary: USD 100,000 - 160,000 annually

Equity and Bonus:Equity

Key Requirements

•Proficiency in process simulation tools: ASPEN Plus/HYSYS, SysCAD, OLI Studio/OLI Flowsheet, METSIM
•Strong understanding of mass transfer, heat transfer, thermodynamics, fluid flow, and reaction engineering
•Experience developing material and energy balances for multi-step, integrated process systems
•Familiarity with data reconciliation, parameter fitting, and model validation using experimental or operational data
•Ability to automate model-based calculations using Python or MATLAB (strong plus)

Experience:Chemical engineeringProcess engineeringMinerals processing

Skills:PythonMATLABProcess simulationThermodynamicsMass transferHeat transferData reconciliation

Tech Stack:ASPEN PlusHYSYSSysCADOLI StudioMETSIMPythonMATLAB

Company Brief

Mariana Minerals

Software-first, vertically integrated minerals company developing extraction, processing, and automation systems to supply critical minerals (lithium and others) for energy, AI, and defense technologies, and building commercial-scale lithium facilities from produced water.

Industry: Mining & Metals

Company Size: Small (11 to 50 employees)

Growth: Early Stage Startup

Funding: Series A

Headquarters: San Francisco, United States

Website LinkedIn Glassdoor

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Mariana Minerals

4 months ago

Process Modeling Engineer

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 2 hours agoStatus: Live

Job Summary

Location: San Francisco, Houston

Workplace: Onsite

Employment Type: Full time

Job Function: Communications, PR & Community

Key Responsibilities

•Develop steady-state and dynamic process models to establish heat and material balances for integrated mineral refinery systems using ASPEN, SysCAD, OLI, or METSIM.
•Automate equipment and process sizing (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/heat recovery, recycle strategies, and material efficiency improvements.

Pay and Benefits

Salary: USD 100,000 - 160,000 annually

Equity and Bonus:Equity

Key Requirements

•Proficiency in process simulation tools: ASPEN Plus/HYSYS, SysCAD, OLI Studio/OLI Flowsheet, METSIM
•Strong understanding of mass transfer, heat transfer, thermodynamics, fluid flow, and reaction engineering
•Experience developing material and energy balances for multi-step, integrated process systems
•Familiarity with data reconciliation, parameter fitting, and model validation using experimental or operational data
•Ability to automate model-based calculations using Python or MATLAB (strong plus)

Experience:Chemical engineeringProcess engineeringMinerals processing

Skills:PythonMATLABProcess simulationThermodynamicsMass transferHeat transferData reconciliation

Tech Stack:ASPEN PlusHYSYSSysCADOLI StudioMETSIMPythonMATLAB

Company Brief

Mariana Minerals

Industry: Mining & Metals

Company Size: Small (11 to 50 employees)

Growth: Early Stage Startup

Funding: Series A

Headquarters: San Francisco, United States

Website LinkedIn Glassdoor