Assystem is one of the world's leading independent nuclear engineering companies, with a stated mission to accelerate the energy transition and combat climate change. Ranked among the top three nuclear engineering firms globally, the company operates across 13 countries in Europe, Asia, Africa, and the Middle East, employing around 8,000 people. Its work spans the entire nuclear lifecycle, from new builds and advanced reactor technologies to operations, maintenance, and decommissioning.
The company has participated in every major EPR (European Pressurized Reactor) construction project worldwide. Its core technical domains include nuclear engineering, digital transformation, advanced reactor technologies, and project management. Beyond nuclear energy, Assystem is active in several other sectors relevant to the energy transition, including renewable energy, hydrogen, power grids, and transportation.
Assystem's engineering, project management, and digital services are designed to support both established and emerging energy infrastructure. The combination of deep nuclear expertise and work in adjacent clean-energy technologies positions the company at the intersection of legacy power systems and next-generation energy solutions.
