Born in Valentigney, Doubs, Boillot was a mechanic by training who began automobile racing in 1908. He went on to join drivers Paul Zuccarelli and Jules Goux to help create a novel range of racing cars as part of the Peugeot team. He debuted with them in 1909 in the Coupe de l'Auto at Rambouillet and in 1910, went to Italy to compete in the Targa Florio.