Assystem SA is a France-based company that is principally engaged in engineering and innovation consultancy. The Company is structured along following sectors: Aerospace, Defence, Energy, Nuclear, Life Sciences, Infrastructure and Transport. The Company develops the infrastructural engineering and externalized R&D services. It's activities include managing infrastructural investments, from conception to dismantling; aerospace mechanical engineering, providing technical services to aerospace, engine and automotive manufacturers and technology & product engineering, providing services in transport, defense, product hardware and software development. The Company is present Europe, North America and Asia. The main shareholder of the Company is HDL Developpement SAS. It operates through Onyx Promavi and Radicon Gulf Consult.