Siemens Process Systems Engineering (formerly Process Systems Enterprise) Siemens Process Systems Engineering is the world’s leading provider of advanced process modelling software, services and solutions for digital process design and digital operations to the process industries. Our gPROMS modelling technology helps leading process organisations from pharmaceuticals and food to petrochemicals and clean energy accelerate innovation and improve plant efficiency. You can find out more on our Siemens web page http://siemens.com/spse.