Bilfinger SE is a holding company. Through its subsidiaries, Co. develops, builds, maintains and operates facilities and structures for infrastructure, real estate, industry and the energy sector. Co.'s business segments include: Industrial, which is comprised of Industrial Maintenance; Insulation, Scaffolding and Painting; Oil and Gas; Industrial Fabrication and Installation; Engineering, Automation and Control; and Support Services; Power, which is comprised of Power Systems, and Piping Systems; Building and Facility, which is comprised of Building, Facility Services, Real Estate, and Water Technologies; and Construction, which is comprised of Construction, and Infrastructure.

Eiffage is a construction and concessions group. Co.'s operations are organized into five divisions. The Concessions and PPPs division is engaged in construction and operating of infrastructures under concessions and public private partnerships. Through the Construction division, Co. is engaged in building design and construction, property development and building maintenance. Through the Public works division, Co. is engaged in civil engineering, road construction, infrastructure maintenance and material production. The Energy division specializes in electrical contracting and air conditioning. Through the Metal division, Co. is engaged in metallic construction and services to industry.

Vinci is engaged in building, civil engineering and facilities management. Through its subsidiaries, Co. is engaged in five divisions comprising of: the Building division which provides retail solutions including construction and fit-out in both the retail and commercial sectors; the Civil Engineering division; the Air division which provides program management, engineering and construction services to customers with airport infrastructure requirements; the Technology division; and the VINCI Facilities division which provides facilities management, repair and maintenance and small works in both the private and public sectors.