ASSYSTEM is an independent nuclear engineering company with nearly 60 years of operational history and 8,000 employees across 13 countries in Europe, Asia, Africa, and the Middle East. The company provides engineering services, project management, and digital transformation capabilities across the nuclear lifecycle - from new builds and advanced reactor technologies through operations, maintenance, and decommissioning - as well as adjacent low-carbon energy sectors including renewable energy, hydrogen, power grids, and transportation.
The company participates in every major EPR (European Pressurized Reactor) construction project globally and is ranked among the top three nuclear engineering companies worldwide. Its client base includes EDF, Framatome, ITER, Rolls Royce, and Naval Group, reflecting its position as a key technical partner to the world's largest industrial groups.
ASSYSTEM combines deep engineering expertise with digital transformation capabilities designed to improve safety, competitiveness, and environmental performance of infrastructure programmes. Its service offering spans the full spectrum of nuclear infrastructure support, from feasibility and design through execution and long-term asset management.
