The indiscretion: Hamilton engineer, Piastri’s former performance engineer in the crosshairs

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It subsequently emerged, from the columns of Corriere della Sera, that it would be Carlo Santi – Kimi Raikkonen’s former track engineer – who would collaborate on an interim basis with Hamilton on the test days scheduled in Barcelona from tomorrow.
The Milanese newspaper had also suggested that the English champion’s engineer would come from McLaren. Will it be Cedric Michel-Grosjean? The AutoRacer newspaper has revealed the identity of this ‘Mister X’, who would be Cedric Michel-Grosjean. The French engineer has been on gardening leave since January, but has worked at McLaren for the last 8 years in various roles.
The last and most important, from the beginning of 2025 was that of Oscar Piastri’s performance engineer, in the season in which he won 7 races and reached the podium 16 times.
From what emerges from Cedric Michel-Grosjean’s LinkedIn profile, last year the Frenchman worked on the configuration and fine-tuning of the differential, brake balance, engine braking and focused on identifying and resolving the reactivity and balance problems of the single-seater with respect to the driver’s inputs.