Robert Mair was appointed Professor of Geotechnical Engineering at Cambridge University in 1998. He was the Sir Kirby Laing Professor of Civil Engineering 2011-17, and Master of Jesus College 2001-11.
He was a Fellow of St John's College 1998-2001. He is also one of the founding directors of the Geotechnical Consulting Group (GCG), an international consulting company based in London, started in 1983. He was appointed Chief Engineering Adviser to the Laing O'Rourke Group in 2011.