Our team

Footprint target is a concept developed by Green Score Capital. Our team brings together science and business in the service of a common destiny.

Our vision

Building a world where all companies have the means to act in full conscience for a sustainable planet

Our mission

Give to each company means to connect environmental performance and economic performance

Valerie Tiersen

CEO and Founder

CEO and Founder

Holder of a Masters in Economics and Finance from Paris II-Panthéon ASSAS and a DESS in Banking Finance, Valérie spent the first 16 years of her career in the banking world, moving from international finance to project management and marketing.

Woman of challenges, she joined 3 Suisses in 2009, a pioneer brand in sustainable development by placing it at the heart of its strategy from the beginning of the 1990s.

After obtaining her degree in Business Sustainability Management at the University of Cambridge, she decided to create, at the end of 2019, her own startup Green Score Capital, whose objective is to accelerate the environmental performance of companies while ensuring their economic performance.

Our pool of experts

Coraline Mattei


PhD in environmental sciences, specializing in atmospheric chemistry, Engineer in Chemistry and Process Engineering, Master in Industrial and Urban Environmental Sciences, 5 years in academic research (Max Planck Institute for Chemistry, CNRS)

Coraline completed her doctoral thesis at the Environmental Chemistry Laboratory (CNRS, Aix-Marseille University) on the experimental study of the persistence of pesticides in the atmosphere.

Convinced that calculation tools are essential for improving the understanding of pollution processes, she then joined the Max Planck Institute for Chemistry in Germany.

Coraline joined the Footprint target project, excited to build a comprehensive calculation and decision support tool based on the most recent knowledge in environmental science.

Deborah Pardo


PhD in Population Biology and Master in biodiversity and ecological evolution, 8 years in academic research (British Antarctic Survey, University Paris VI). Co-founder of Earthship Sisters, accelerator of environmental leadership.

Voted Top 20 Innovative Women in France in 2017, Deborah was the first Frenchwoman to participate in the Homeward Bound program in 2016, the largest female expedition in history to Antarctica which aims to train 1,000 scientists from all countries in impact leadership.

The footprint target tool is obvious, it links her work as a scientist, her thoughts as game changers of our societies and tailor-made (including) financial support for companies that want to do better.

Lucile Marescot


PhD in ecology and evolutionary biology and agricultural engineer, 10 years in academic research (CNRS, Universities of California, Wellington and Leibniz).

Scientific consultant specializing in statistical models and decision-support tools to assess the conservation status of threatened species and propose measures to protect managers.

At a time when the destruction of natural environments has become so massive, the role of scientists is not so much to oppose the impacts of human activities in vain, but rather to quantify our ecological footprint and show how to reduce it for the better. Live in harmony with nature.

The Footprint Target project carries values ​​that it shares and inspires a change towards more eco-responsible lifestyles while promoting a digital and technological revolution in the service of the environment.

Our values


Monitoring the scientific developments to put the best of science at the very heart of our technology.


Being at the service of the elements which surround us for our common destiny.


Being close to your expectations and together, building the world of tomorrow.


Whether in our scientific approach, or in the evaluation of our customers, the measure is authentic.