Meet The Team

Yoann FOL

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I founded Dathappy to combine social and data innovation in a unique movement.

As a founder and CEO, I take care of global partnerships and business development while ensuring the vision is clear and shared by every Dathappy hero. Making sure Dathappy has the relevant talents and finances to achieve its desired impact is also key to reach the targeted growth.


I have always been in the Data Economy, being a Data Scientist for multiple organizations and teaching introduction to Data Analytics at a French University.


I am a nature lover, I hike in various places to disconnect and find new inspirations in contact with new cultures. And as a real minimalist, my life is all in a 40L bag ;)

Tunde Vizsnyai

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My job as Operations Manager is to make our internal processes efficient and to make sure we deliver our promises in the best quality.

Before Dathappy, I worked as an accountant and project manager and always dreamt about a meaningful job like this one.

In my free time, I do CrossFit, read too much about politics, and try to make people laugh.

Charlotte Castelnau

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I focus on making the Dathappy app as efficient and user-friendly as possible.

I am an IT engineer, worked in finance for many years and now I want a taste of the startup world.

I left France 10 years ago and have lived in Sweden and Brazil so far. I love traveling, learning about new cultures and languages.

Tamunotonye Harry

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I'm a social media manager turned data analyst who loves using data to create infographics/visualizations and with digital marketing knowledge, I communicate better with a large audience. 

At the moment I'm actively connecting people to the right information/knowledge in data science and digital marketing through community development and participation.



Nowadays the digital revolution is transforming everyone’s life, from automation in plants to decision processes in headquarters.

But the technology is only an enabler of innovation. We have to make sure that technological progress is used for and by the people.
Simultaneously, a lot of volunteering initiatives for social and environmental impact are growing. However, we truly believe that the social enterprise we created is a more sustainable solution, allowing people to work as usual and generate a positive impact and revenue at the same time. 
We can then support purpose-driven initiatives  on a day to day basis with professional services.

Our founder combined Data Science and Sociology during his studies in France, it brings a perfect mix to leverage technologies while understanding the world surrounding us. He has been involved in various organizations and communities to develop Tech for Good, taking care of our communities and the nature he loves.

So naturally, Dathappy was born to combine social and data innovations in a movement.

Our partners and clients

Events & Media featuring


May 19

Featured by Tribe Theory media about our Data for Social Good entrepreneurial journey.


Mar 19

The Singapore International Foundation invited us to talk about Big Data - Big Impact.


Apr 19

Startup of the week from the vibrant French Tech community in Singapore




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