Rafael Estrela

Rafael Estrela joined Astris in June 2013 in the São Paulo’s office. Prior to joining Astris, Rafael spent two years in Private Equity at Artesia, where he led several buy-side investment analysis of companies in a wide range of different sectors, such as consumer goods, health care services, education and agribusiness, as well as assisted senior management during several acquisition processes. Prior to his tenure with Artesia, Rafael worked at Standard & Poor’s, performing corporate credit risk analysis. At Astris, Rafael has been very active in the energy sector in Brazil: he has been involved as lead modeler and assisted throughout execution of several M&A and project finance transactions in the transmission line and power sectors. Rafael also participated in cross-border M&A transactions in the same sectors.

Rafael holds a BS in Industrial Engineering from Federal University of São Carlos (UFSCar). He is fluent in English, Spanish and Portuguese.

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Diana Marroquin

Diana joined Astris in January 2015. Prior to Astris, Diana worked at Structure Banca de Inversión in Bogotá. At Structure, Diana participated as financial director of a variety of projects, including the structuring of infrastructure concessions for the public sector (airports, roads, etc.), and the valuation of companies and projects in the energy and gas sectors.

Diana holds a BS in Business from the Los Andes University. She is fluent in Spanish and proficient in English.

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Patricia Onieva

Prior to joining Astris in November 2022, Patricia spent more than four years within PwC’s project finance team in Spain where she mainly led tenders, non-recourse debt financing and PPP structuring mandates within the infrastructure and energy sectors in the Middle East, Spain, Honduras, Poland, India, Guatemala and Mexico.

Before PwC, Patricia was part of Deloitte’s infrastructure financing team for four years where she was in involved in infrastructure deals (transportation, social infrastructure, waste and water) advising both the private and public sector mainly in Spain, Portugal, Panamá, Colombia and Peru.

Patricia holds a BBA from Universidad Complutense de Madrid (UCM), and a MSc in Corporate Finance and Investment Banking from Instituto de Estudios Bursátiles (IEB). She is fluent in Spanish and English.

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Joaquin Fernandez-Salvador

Joaquin joined the Washington, DC office of Astris Finance in July 2015. Prior to that he worked as an intern in Astris during the summer of 2014 and the first half of 2015. During this time he has been involved in the photovoltaic energy and infrastructure sectors in a variety of countries, assisting throughout the development and execution stages of several project finance transactions.

Joaquin has a BA in Economics and a minor in Political Science from Georgetown University, from which he graduated Magna Cum Laude. He is fluent in Spanish and English, and conversant in Portuguese.

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Marta Mediavilla

Marta Mediavilla joined Astris Finance in July 2018 in the Madrid office. Since joining the team, Marta has been involved in renewable energy mandates. Prior to that, she worked in the Infrastructure and Project Finance division of EY, primarily involved in structuration, bid process, M&A mandates and financing of social infrastructure PPPs, waste to treatment PPPs, and RE projects. Before that, she participated in EY’s Transactions Graduate Program, collaborating with different deal departments including M&A, strategy, restructuring, valuation and, due diligence.

Marta holds a BA in Business Administration and Finance from Universidad Pontificia Comillas de Madrid (ICADE). She also spent a year in University of Illinois at Urbana-Champaign (UIUC). She is fluent in Spanish and English.Return to the team page.