She graduated from the School of Mining, Energy and Materials Engineering of Oviedo in 1986 with a BS degree in Mining Engineering and completed a master’s degree in Business Administration from the University Institute of Business (IUDE) in 1991. In 1993, she received a degree in Environmental Engineering from the EOI Business School. She also holds a BA degree in Journalism from the University of the Basque Country (2002).

Prior to joining Atlantic Copper, Esther Alonso held the position of Director of Energy, Climate Change and Environment at ArcelorMittal in Spain. She began her career in 1987 as a systems engineer in the Computer Management area of Empresa Nacional de Siderurgia (Ensidesa), where, starting in 1991, she became the head of the Waste Management Department, part of the company’s Environmental Division. In 1994 she became the Manager of Environmental Engineering at Corporación de Siderurgia Integral (CSI) and, in 1998, she took the position of Energy Strategies Manager at the Aceralia Group, which became ArcelorMittal in 2001. In the new company she held the Purchasing and Investments Manager position starting in 2001, until being named Director of Energy, Climate Change and Environment in 2010.