Ramboll is a global engineering, architecture, and management consulting firm founded in Denmark in 1945 by Børge Johannes Rambøll and Johan Georg Hannemann. The company is predominantly owned by the Ramboll Foundation, an ownership model that ensures long-term reinvestment into technical innovation, employee development, and research. Operating across 35 countries with over 18,000 multidisciplinary experts, Ramboll has established itself as one of the world’s leading technical authorities in sustainable railway and transit infrastructure.

In the railway sector, Ramboll provides full-lifecycle engineering from early strategic feasibility, route selection, and environmental impact assessments (EIA) to detailed permanent way engineering, bridge and tunnel design, traction electrification, and digital rail systems. The firm is globally celebrated for acting as the lead technical consultant on the Danish Signalling Programme—the world’s first nationwide digital railway overhaul replacing legacy signalling with ERTMS Level 2 across national lines and CBTC on Copenhagen’s S-bane.

Ramboll’s major railway portfolio also includes high-profile mega-projects such as the Fehmarnbelt Fixed Link (the world’s longest combined road and rail immersed tunnel connecting Denmark and Germany), High Speed 2 (HS2) in the United Kingdom, the Greater Copenhagen Light Rail (Hovedstadens Letbane), Tampere Tramway in Finland, and major electrified commuter rail corridors throughout the Nordic region and continental Europe.