 Mariñelarena established E Corp Studio in 2001, as an advertising agency and multimedia production company, developing television commercials and websites for such clients as the telecommunications companies Iusacell, Telcel and Telmex.Other commercial work has been for clients including Maybelline, Fujifilm, Magnicharters, Coppel, Edebé, Sheraton Hotels and Resorts and Pemex.In 2005, Mariñelarena was co-founder and chief operating officer of Eru Digital, a Mexican international provider of solutions for the creation, management, post-production, delivery and access of film and video, for the Communication, Media and Entertainment industries.