Diana Sierra is the Co-founder and CEO at Be Girl. Diana built her career in industrial design as a consultant, working for almost 10 years for different multinational companies and consultancy firms such as on Smart Design, Frog Design, Nike, Panasonic, Energizer, Tommy Hilfiger, Arnell Group, Curve ID, B.Robinson, and Playtex. In developing countries, she has worked in East Africa and South America on better designs for cookstoves, agro-processing machines, soil testing devices and women empowerment programs through business and design. Diana holds a Master of Science degree in Sustainability Management from Columbia University and a Bachelor of Arts degree in Industrial Design from the Universidad de Los Andes in Bogotá, Colombia. She also teaches product innovation and design for sustainability for small businesses at the SENA in Medellín, Colombia, and collaborates with the Cooper-Hewitt National Design Museum on educational workshops for teens.