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ASSYSTEM
Switch On — Engineering & Digital for energy transition
About ASSYSTEM
Assystem is an independent international engineering group that provides engineering, project management, and digital services to support the energy transition, with a primary focus on the nuclear industry. It works across the life cycle of complex infrastructure projects—including design, construction, commissioning, maintenance, and decommissioning—and serves sectors such as nuclear, renewable energy, power grids, hydrogen, transportation, and defence.
Industry
Engineering (engineering and project management services, with a focus on nuclear energy)
Headquarters
Courbevoie, France (Tour Egée, 9-11 Allée de l'Arche)
Company size
Approximately 7,600–7,700 employees (LinkedIn lists 5,001-10,000)
Founded
1966
What we do
Nuclear engineeringProject management consultancyEngineering and designDigital services and digital transformationConstruction management and commissioningDecommissioning and waste managementRenewable energyPower gridsHydrogenTransportation
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