LeFil Consulting has its main team and office in Zurich. However, its network spans multiple continents, as it works closely with like-minded consultants, experts and entrepreneurs around the world.

  • Jessica Graf

    Jessica Graf (Zurich-Switzerland) is the Founder and Managing Director of LeFil Consulting. Before LeFil, she spent 8 years in developing countries, serving public and non-profit institutions, such as the UNDP, Action contre la Faim, the OSCE and the Swiss Foreign and Economic Affairs. She then worked at McKinsey & Company and managed Vietnam Holding Asset Management for another 6 years. She graduated in Political Sciences at the University of Geneva, and holds an MBA from INSEAD.

  • Cecilia Gamba

    Cecilia Gamba (Bologna – Italy) is a Project Manager at LeFil. Before joining, Cecilia worked as a data analyst at WegoWise, Inc. and Elevate Energy, both US-based organizations providing energy efficiency services for affordable housing. In these positions, she specialized in leveraging data for effective product/program development and delivery. Prior to that she was a researcher with the Chicago Booth School of Business’s Initiative on Global Markets. Cecilia holds a Masters degree in Economics from the University of Bologna.

  • Anna Arenillas

    Anna Arenillas (Zurich-Switzerland) is a Consultant at LeFil. Before joining the team, she worked as a junior auditor at EY where she gained experience in analyzing financial statements and managing large datasets. Driven by the desire of generating positive impact, she has volunteered in several social impact projects making education more accessible for young adults. She holds a Bachelor’s degree in International Business Economics from the University Pompeu Fabra (Spain).

  • Sarah Meibom

    Sarah Meibom (Zurich-Switzerland) is a Junior Analyst at LeFil Consulting. Before LeFil, she worked in business development for a tech start-up and in financial advisory at PwC, gathering experience with both young and established companies. Passionate about languages, cultures, and above all creating social impact, she worked as a volunteer for a foundation helping children through sports in Colombia. Sarah holds a Master’s degree in Banking and Finance from the University of St. Gallen (Switzerland).

  • Michal Januszewski

    Michal Januszewski (Zurich-Switzerland) is a Junior Consultant at LeFil. Before LeFil, he worked as an intern at the UNEP/GRID center where he gained experience in analyzing sustainability strategies and writing industry reports. Passionate about sustainability and international development, Michal volunteered for Sustainable Growth Associates and was a delegate at Youth Adaptation Dialogue 2022. He holds a Master’s degree in Global Business and Sustainability from Rotterdam School of Management (the Netherlands).


  • Aziz Mebarek

    Aziz Mebarek (Tunisia) in the Founding Partner of AfricInvest ( Aziz has over 20 years of experience in the private equity industry in the Maghreb, Sub-Saharan Africa and Southern Europe. He participated in raising around 1 billion USD private equity funds as well as structuring and executing several equity transactions. Prior to AfricInvest, Aziz was the General Manager of two industrial companies, ILVA Maghreb and Tunisacier International (part of Ilva the Italian Steel manufacturing conglomerate).

  • Daniela Bolivar

    Daniela Bolivar (La Paz – Bolivia) is LeFil’s Focal Point for Latin America. After studying Visual Communication and Education at the Catholic University of Bolivia and being herself an entrepreneur in the recycling business for many years, she dedicated the last 6 years of her career to social entrepreneurs, working on research and educational programs, as well as on outreach and documentary projects. She also worked extensively for high-impact organizations, to help them develop comprehensive communication strategies.

  • Eric Kacou

    Eric Kacou (Abidjan – Ivory Coast) is the Co-founder and CEO of Entrepreneurial Solutions Partners (, an advisory and investment group to entrepreneurs and leaders across Africa and the Caribbean. Prior to ESPartners, Eric led the Rwanda National Innovation and Competitiveness Program and advised leaders of business, government and development organizations worldwide. He earned his MBA at the Wharton School and his MPA at the Harvard Kennedy School.

  • Inès Mazas

    Inès Mazas worked 10 years in the social impact space, on the topics of social innovation, impact evaluation, organizational performance and leadership. After working in strategy consulting at Accenture and Hystra, she worked for five years in Guatemala where she supported local entrepreneurs in rural areas and led the impact department at Alterna, an incubator and impact investing fund. She is now based in Brazil, working as a consultant and supporting local projects in environmental education, entrepreneurship and women empowerment. She holds a Master of Science in Business and Administration from the ESSEC Business School (France) and a Master in Public Policy and Development from Paris Descartes University (France).