Process engineering is an engineering discipline that focuses on the design, development and optimization of industrial processes. This involves using scientific knowledge and engineering techniques to design, operate and improve production systems in various industrial sectors, such as the chemical industry, food and beverage, oil and gas, pharmaceuticals, and many others.

The goal of process engineering is to achieve maximum efficiency in the production of goods and services by minimizing production costs, maximizing product quality, and optimizing the use of resources. The processes designed and optimized by process engineers can involve multiple stages, from raw material procurement, processing, refining, to packaging and distribution.