Online application after which I took part in a remote interview (due to COVID) with 2 senior staff and group assessment centre with about 15-20 people after a presentation by current graduate engineers within the company.

Transportation Assessment day in Southampton for a position in their offices in the UK (I specified London). They have a few presentations of recent projects, one about Ramboll itself and others from recent graduates. Then they split the 16 of us into 4 groups and gave us an hour long design challenge for the means to connect two towns divided by a river (everyone designed a bridge). Then they had one of those analytical logic tests for 30 minutes, your typical test for language, spacial awareness, reasoning etc. Finally there was the interview for 30 minutes.