Guillermo Herrera has extensive experience in account management and customer service, currently serving as an Account Manager at Celanese since September 2010, where previous roles included Account Development Representative and Customer Service Team Lead. Prior to that, Guillermo worked at Nokia as a Transactional Buyer, handling NAFTA purchase orders, and held positions in commercial assistance at Attosoft SRL in Romania and the Danish Embassy in Mexico. Early career stages included internship roles at AIESEC in Denmark and La Salle, as well as the Ministry of Foreign Affairs of Mexico, where participation focused on finance, sponsorship organization, and media analysis. Guillermo holds a degree in International Business and Trade from Universidad La Salle, obtained in 2008.