AtkinsRéalis Group, Inc. engages in the provision of project management and professional services. It operates through the following business segments: Engineering Services, Nuclear, Operations and Maintenance (O&M), Linxon, LSTK (Lump-sum Turnkey) Projects, and Capital. The Engineering Services segment includes consultancy, engineering, design, and project management services. The Nuclear segment focuses on supporting clients across the life cycle with procurement and construction management, field, technology services, spare parts, reactor support and decommissioning, and waste management. The O&M segment consists of providing operations, maintenance, and asset management solutions for bridges, transit systems, highways, buildings and industrial plants including power plants, water supply and treatment systems and desalination plants, and postal services and ships. The Linxon refers to the offering of engineering, procurement, management, and construction services for execution of large, complex alternative current power substations, expansions and electrification. The LSTK Projects involves the remaining construction contracts of the Company, mass transit projects in Canada, and in the Middle East. The Capital segment contains the investment, financing, and asset management arm. The company was founded in 1911 and is headquartered in Montreal, Canada.