Dennis Groups Process Engineers are key in our projects of designing and building food and beverage processing facilities. Process Engineers work in every aspect of a project - controls, packaging, mechanical, electrical, building system, architecture, etc., from the conceptual stages to design completion, and throughout construction. They provide expertise in flow diagrams, alterations, constraints, piping and instrumentation diagrams (P&ID), layout, install, and commissioning and start-up. Process Engineers enable operational efficiencies for the food and beverage process plants of our clients.