After engineering studies (Arts & Métiers and Ecole Polytechnique), Guillaume began his career as a financial auditor at Arthur Andersen, mainly working in Telecoms. He moved from audit to consulting and then joined SFR in the sales department where he digitalized the customer on-boarding process online and in store. This innovative process combining ID verification and electronic signature is the DNA of AriadNEXT founded in 2010 with Marc Norlain. 9 years later, AriadNEXT provides ID verification for many financial institutions in France and Europe and is working in the next challenge: electronic ID.