Roeslein & Associates is an employee-owned engineering company headquartered in St. Louis, Missouri. Established in 1990 by Rudi Roeslein and Fritz Dickmann, Roeslein & Associates has emerged as a global leader in engineering, procurement, modular fabrication, and construction of canmaking and industrial plant facilities. The company offers an array of technical services and engineered products to various process industries, with a distinct emphasis on Prefabrication, Preassembly, and Modularization. Roeslein & Associates has an expanding presence across North America, South America, Europe, and Asia

In 2015 Roeslein & Associates became employee-owned when they implemented an Employee Stock Ownership Plan (ESOP). Their mission is to provide value to both customers and employee-owners by leading the way in alternative construction methods, ensuring safety, fast return on capital, and consistent results. A strong commitment to integrity and fairness governs decision-making. Being an employee-owner transcends participation in the ESOP, it entails a profound sense of responsibility for projects, daily choices, and the collective welfare of fellow employees. The firm nurtures an ownership culture that is marked by a shared investment in the company's success, collective financial security, mutual accountability, the pursuit of operational excellence, and alignment with their Vision, Values, and Ethos.