As of the summer of 2009, Mercedes Sierra is Vice President at the SENER office in San Francisco, of the Business Development for Concentrating Solar Power in the US. After working at CDTI (Centro para el Desarrollo Tecnológico e Industrial; governmental entity devoted to R&D, Ministry of Industry), as Director of Aerospace Programmes, from 2005 to June 2009, Mercedes Sierra is back in SENER where she began her professional career in 1985, as part of the Structures and Mechanism Section in Bilbao. Ms Sierra has worked for more than 20 years, in the areas of Business Development, System engineering and Project Management in complex interdisciplinary and international projects.