We are a group of academics and experts in the field of environmental economics.

David Maradan
Director

PhD | Economics
Master | Public Management (MAP)
Licence | International Relations (IUHEI)

David Maradan is the Director of ecosys. He started in the company as an intern in 1998 and became an employee before his promotion to Co-Director. David has carried out many analyses for the Swiss and German Cooperation and Development bodies (DDC and GIZ), the OECD, the World Bank, the UNDP and UNEP, the EU, the Swiss administration (SECO, OFS, OFAS, OFEN) and cantons (Fribourg, Vaud, Genève), as well as for private companies.

David is also a lecturer at the Geneva Business School (HEG) and at the Universities of Fribourg and Geneva. He teaches Microeconomics, Environmental Economics and Public Finances. He was also a member of the external commission responsible for evaluating public policies (CEPP) in Geneva between 2007 and 2013.

David obtained a PhD in Political Economics at the University of Geneva in 2005. In 1998, he received his degree in International Relations (IUHEI, Geneva) and his Masters degree in Public Management (MAP, Geneva) in 2001.

CV David Maradan

Jonathan Blockley
Partner

DAS | Sustainable Management
Master | Public Management (MAP)
Bachelor | Economics (HEC)

Jonathan Blockley is Partner at ecosys, where he has been working since 2011. During this time, he has worked on many analyses and projects with different institutions (UN, EU, Environmental Ministries, Development and Cooperation bodies, NGOs). Jonathan is a certified CSR Auditor and has obtained both a Carbon Footprint Certificate (ABC method) and a Global Reporting Initiative (GRI) Certificate. He is also “Ecoentreprise coach” (Ecoentreprise program) and “accredited B-Leader” (B-Corp label).

In addition, Jonathan carries the “CSR performance assessment” module at the Geneva Business School (HEG) for the Diploma of Advanced Studies in Sustainable Management. Jonathan is also a teaching assistant at the Swiss Open University for the Industrial Organisation and the Public Economy courses.

In 2015, Jonathan received his Diploma of Advanced Studies (DAS) in Sustainable Management at the Geneva Business School. He received his Bachelor of Science in Economics at the University of Geneva in 2009 and his Master’s degree of Arts in Public Management and Environmental Management in 2011. Part of this degree involved a period of study at the University of Administration in Speyer (Germany).

CV Jonathan Blockley

Samantha Pedrini
Researcher

Master | Standardization, Social Regulation and Sustainable Development (UNIGE)
Bachelor | Economics (HSG)

Samantha Pedrini is a scientific collaborator at Ecosys. Her key skills lie in implementing cross border governance on sustainability issues.

She has experience in project management within public institutions and NGOs. Samantha worked in international trade research at the University of Geneva until 2020.

She holds a Master’s degree in Sustainable Development from the University of Geneva (2016) and a Bachelor’s degree in Economics from the University of St Gall (2013), partly completed at the American University of Central Asia , in Bishkek, Kyrgyzstan. She also holds an IPMA certification in project management (2022) as well as training in development project management (PlanSud, 2014)

Klaus Keller
Researcher

Dr Ahmed Ayad
Senior Consultant

Doctorat | Technology Management (Technology Transfer & Innovation Systems)
Master | Information Systems
Licence | International Economic Law, and Computer Engineering

Dr. Ahmed Ayad has over 25 years of experience, including missions with the UNDP on climate action, energy efficiency, and accreditation to the Green Climate Fund. He is an expert in environmental and climate monitoring using space technology and in multi-sectoral data processing.

Dr. Ahmed Ayad is an expert in analyzing complex technological value chains, producing consolidated, traceable, and compliant databases, and analyzing them. He also holds an Executive MBA.

Dr Abdelhak Trache
Senior consultant

PhD | Doctor of Engineering in Geographic Sciences and Spatial Geodesy Postdoctoral Research
Post-doctorat | SIG

Dr. Abdelhak Trache has over 40 years of experience in environment, climate change, and institutional governance, including assignments as a Senior Expert with UNDP and other international organizations.

He is the lead author of Algeria’s 3rd National Communication and 1st Biennial Transparency Report (BTR1), submitted to the UNFCCC in 2024 (direct experience in complying with the transparency requirements of the Paris Agreement). He also produced a comprehensive analytical report on institutional and regulatory coherence with the Global Biodiversity Framework (UNDP/GE).

Intern

ecosys also employs project assistants or interns on a regular basis. Project assistants are generally about to finish an academic degree or have recently obtained one. They therefore either work on a particular project concerning environmental economics (memoire, thesis) linked to their degree or more generally on various projects for ecosys.