Guichon was born to a Swiss mother and a French father and grew up on the Haute-Savoie–Romandy border near Geneva, Switzerland.

[3] In 2005 at the age of 14, he began his culinary training at the École Hôtelière Savoie Leman in Thonon-les-Bains, France and participating in local competitions.

[5] After completing his training, Guichon was hired to run the Lenôtre boutique and school in Cannes on the French Riviera.

[7] In 2014, French pastry chef Jean-Philippe Maury invited Guichon to work at the Las Vegas branch of his Patisserie, with shops in the Aria Resort and Casino and Bellagio.

In 2019, Guichon co-founded the Pastry Academy with Belgian chef Michel Ernots in Las Vegas.