After graduating from Ecole des Mines de Nancy, IFP School, and from SDA Bocconi School of Management in Italy, Christophe Mansuy began his career in 1989 at IFP (Institut Français du Pétrole, now Axens) as a process and commissioning engineer for international industrial plants, then moved on to become Sales and Marketing Manager for the Far East.

After a period with SCOR, he joined Bouygues Offshore (now Saipem France) in 2000 and held general management positions in several countries before being appointed Corporate Vice President in 2011. In 2016, Christophe Mansuy joined SPAC, a subsidiary of Colas, as the Director of the Energy Transport business unit, and was then appointed CEO of the company.

In January 2020, he has been Managing Director - International at Colas Rail.

In July 2023, Christophe Mansuy has been appointed Group Vice President, Human Resources of the Colas Group.