Sergio Guillin Perez serves as the Chief Operating Officer at Organización Soriana, a leading grocery retailer in Mexico, since June 2024. Prior to this role, Sergio has held various strategic positions including Independent Member of the Advisory Board at Niagara Bottling, Managing Director of Grupo Herdez's Retail Business Unit, and Associate Consultant at AddLink ConsultorÃa & Estrategia. Long tenure at Walmart from 2004 to 2021 included roles such as VP and COO of Walmart Supercenters, where Sergio oversaw significant digital transformation and customer-centric initiatives across numerous locations. Educational qualifications encompass a postgraduate degree in Business Administration from FGV - Fundação Getulio Vargas and a Bachelor's degree in Production Engineering from USP - Universidade de São Paulo.