Process Simulation Engineers create mathematical and computational models that represent industrial processes such as chemical reactions, energy systems, manufacturing flows, and thermal operations. Their work includes defining process assumptions, building simulation models, running scenarios, and interpreting results to improve efficiency, safety, and cost-effectiveness. They use process modeling software, numerical methods, and data analysis to evaluate system behavior under varying conditions. Process Simulation Engineers work in chemical, energy, manufacturing, pharmaceuticals, and industrial engineering environments. Globally, demand remains strong as industries seek to optimize processes, reduce operational risk, lower emissions, and support digital transformation through simulation-driven design and analysis.