Assystem. 

Assystem S.A. provides engineering and infrastructure project management services worldwide. It operates in two segments, Energy & Infrastructure, and Staffing. The company develops, executes, delivers, and manages critical and complex infrastructure projects for public authorities, utility companies, and equipment manufacturers. It also offers engineering, procurement, and construction management; project management consulting; industrial control system; siting and permit survey studies; research and analysis; systems engineering; project management; digital engineering; project control solutions; digital field services; and industrial data science, as well as compliance, safety and security services for nuclear, energy, healthcare and life sciences, transportation, defense, and buildings and infrastructure sectors. In addition, the company provides decommissioning and waste management services, and integration and maintenance services. Further, it offers specialist consultants and technicians for the oil and gas, defense, telecommunications, public transport, equipment, mining, metallurgy, and nuclear industries. The company was formerly known as AssystemBrime S.A. and changed its name to Assystem S.A. in June 2005. Assystem S.A. was founded in 1966 and is headquartered in Courbevoie, France. Assystem S.A. is a subsidiary of HDL Development.