In the past 25 years, the company has expanded from being a business mainly focused on the Nordic region, to having offices in more than 35 countries, with more than 18,000 employees working on projects across the world.

[5] The company's main work and solutions are for clients in the Buildings, Transport, Energy, Environment & Health, Water, Management Consulting, and Architecture & Landscape sectors.

[6] Both had studied at the Technical University of Denmark (DTU) and were heavily motivated to be involved in the rebuilding effort following the devastation of the Second World War.

This experience contributed to future undertakings, including work on high-tension-line towers for power plants as well as with the Norwegian telephone directorate.

[6] During the 1960s, the company worked on incineration plants and waste management projects for the first time; environmental affairs proved to be a key new area of growth.

The stated aims of this move included the desire for all profits generated to be used to continue the development of Rambøll & Hannemann, to safeguard its long-term future and independence, as well as to benefit its employees, clients and communities.

[citation needed] During 2014, Ramboll acquired the US-based global consultancy, ENVIRON, adding more than 1,500 environmental and health science specialists in 21 countries.

[21] Ramboll Group A/S includes a number of primary business units within Markets and Geographies spanning the EU and US, and with branches and offices in 35 countries.

During the early 2010s, the company announced that it was re-orientating itself towards major infrastructure works in regions such as the Middle East, Russia and eastern Europe.

[26] This bridge connects Halsskov on Zealand with Knudshoved on Funen, 18 kilometres to its west, a two-track railway and a four-lane motorway had to be built, aligned via the small islet Sprogø in the middle of the Great Belt.

The innovative design of the roof, which Ramboll has projected in cooperation with Henning Larsen Architects, was the reason for the Opera winning "The 2008 IABSE Outstanding Structure Award".

[32][33] Internationally, Ramboll has also marked itself by being involved in projects such as Chicago Lakeside Development,[34] Ferrari World in Abu Dhabi,[35] King Abdullah Petroleum Studies and Research Center in Saudi Arabia, the National Museum of Art, Architecture and Design in Oslo,[36] and infrastructure upgrades on the Falkland Islands.