Mariana Minerals
Staff Process Modeling Engineer
$100K–$160K
Houston, TX · On-site · Staff · Full-time · Posted Oct 21, 2026
- Experience
- 8+ years; no alternative stated.
- Education
- Bachelor's degree or higher in Chemical Engineering, Mechanical Engineering, Process Engineering, Metallurgical Engineering, or a closely related engineering discipline.
About the job
Develops, validates, and optimizes process models for critical-mineral refining, translating lab and operating data into designs for scalable refining facilities.
What you'll do
- Build and calibrate steady-state and dynamic process models, including heat and material balances, using simulation tools and operating data.
- Automate equipment sizing and connect model outputs to engineering deliverables and CAPEX/OPEX estimation tools.
- Conduct process optimization, document modeling practices, and provide technical leadership across projects.
What they ask for
- Bachelor's degree or higher in Chemical Engineering, Mechanical Engineering, Process Engineering, Metallurgical Engineering, or a closely related engineering discipline.
- 8+ years 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 and heat transfer, thermodynamics, fluid flow, reaction engineering, chemical equilibria, and phase behavior.
Nice to have
- Competency with Python or MATLAB for model automation, data processing, and custom calculations.
- Experience integrating process modeling outputs into EPC deliverables.
Pay
$100K – $160K (base salary)
Tools
ASPEN Plus / HYSYS, SysCAD, OLI Studio / OLI Flowsheet, METSIM, Python, MATLAB, PLC, DCS
Model-written summary · the original posting is authoritative