She began her career at Sligos as a research engineer before joining Renault in 1984 as a CAD engineer. Her first experience in bodywork engineering was on the Safrane project in 1989, then on the Mégane 1 project.

She was appointed Manager of Body-in-white Engineering in 1999, a position she held until 2005, when she became Technical Manager for the Mégane Range. On January 2, 2008, Nadine Leclair became Vice President, Vehicle Engineering.

On September 1, 2008, she is appointed to Renault’s Management Committee.