ASSYSTEM: A NEW PATH TO GROWTH An international engineering and innovation consultancy group, present in 20 countries with nearly 12,000 employees, Assystem has been a benchmark partner of the world's largest industrial groups for 50 years. The group operates from R&D to maintenance of installations to implement the techniques required for its customers' products, processes and production infrastructures. INTERNAL ERROR Internal Server Error. Unable to load the requested page. You can return to the home page by clicking here or try again later if the problem persists. INTERNAL ERROR The server encountered an internal error and was unable to complete your request. You can try to click here to load the homepage or wait and try again later if the problem persists.