Javier Nieves Garrudo interned with LEO Europe Marketing at Xerox in summer 2015. His objectives were to design materials like newsletters, slides, and matrices for Xerox's European marketing campaigns. He also aimed to improve email communication and learn about internal communication, sales strategies, and social media marketing at a large enterprise. His achievements included developing a new newsletter webpage using HTML, creating slides and graphics to support LEO's European marketing, establishing distribution lists to enhance internal communication, and gaining knowledge of Xerox's procedures, branding, email marketing, and sales objectives in Europe.