After graduating from the École nationale supérieure de mécanique et d'aérotechnique, Sanchez started his motorsport career working as an aerodynamicist for the Renault Formula One team as a junior aerodynamicist in 2005.
[2] Seeking a new challenge, Sanchez decided to join Ferrari in October 2012 as a Principle Aerodynamicist, later replacing the departing Dirk de Beer as chief aerodynamicist in 2016 before heading up the entire department in 2019.
[3] In 2021, Sanchez was promoted again to chief engineer, vehicle concept, leading the design, and development of the 2022 Ferrari car.
[4] Sanchez left Ferrari in March 2023,[5] and entered a period of gardening leave, before returning to McLaren as technical director of car concept and performance, effective 2024, replacing James Key.
[6] He left McLaren by mutual consent on 2 April 2024, as the role he had envisioned was "not aligned with the reality of the position".