Process Modeling Engineer: AI-Driven Flowsheets for Industry

Riven Systems; New York (NY); Hybrid; USD 160,000 - 220,000; Full time

Job summary

Riven Systems in New York is seeking a Process Modeling Engineer to bridge our platform with operating plants. You will collaborate with thermodynamics, hydrometallurgy, ML, and autonomous experimentation experts to model flowsheets with industry-leading rigor.

We welcome interdisciplinary experience and a lean team culture. The role focuses on scalable modeling architectures and continuous validation within a growing mineral-processing platform.

Qualifications

• Ph.D. in Chemical Engineering, Operations Research, or related field, or equivalent industry experience.
• Experience building process models, including writing unit operation models and diagnosing convergence failures.
• Fluency with equation-oriented modeling and large-scale nonlinear optimization, including initialization, scaling, and degrees of freedom.
• Working knowledge of hydrometallurgical unit operations, or comparable separations experience.
• Views on how process modeling changes when the caller is an agent rather than an engineer at a terminal.
• Comfortable with the tools and processes for building large software systems.
• Clear interdisciplinary communication and the curiosity to quickly learn and execute in new domains.
• Ability to prioritize, execute, and collaborate with a high degree of agency, a willingness to be wrong, and the ambition to build something that has never existed before.
• Trust, humor, rigor, and an excitement to work in a scrappy, interdisciplinary early-stage environment.

Responsibilities

• Develop Riven's programmatic process modeling layer where models can be written by humans or agents.
• Design a composable model architecture with rigorous flowsheet validation.
• Systematize the initialization, scaling, and solving of process models.
• Connect the process layer to thermodynamic modeling.
• Build the paths that carry operational data from pilots and customer deployments back into the platform.
• Establish continuous validation and regression testing across a growing model library.

Skills

Process modeling

Equation-oriented modeling

Nonlinear optimization

Hydrometallurgy

Software systems

Interdisciplinary communication

Agent-based modeling

Programming concepts

Education

Ph.D. in Chemical Engineering or related field

Tools

Aspen Plus

gPROMS

METSIM

OLI

IDAES/PrOMMiS

Job description

Riven Systems in New York is seeking a Process Modeling Engineer to bridge our platform with operating plants. You will collaborate with thermodynamics, hydrometallurgy, ML, and autonomous experimentation experts to model flowsheets with industry-leading rigor.

We welcome interdisciplinary experience and a lean team culture. The role focuses on scalable modeling architectures and continuous validation within a growing mineral-processing platform.