BELEM was co-founded in 2015 by Côme JEAN JARRY, Romain ROUPHAEL, and Jérémy SERROR.

The professional expertise of our team in finance and technology has led us to identify real needs in these areas and to work on the development of new business models.

We leverage Blockchain technology to develop innovative solutions in the field of finance, from their ideation to their industrialisation.



Côme is in charge of the financial engineering of our solutions.

He has worked for 12 years on the Foreign Exchange and Interest Rate markets, including 11 years in Asia (Tokyo and Hong Kong) for Calyon and Daiwa Capital Market. He was Executive Director managing the long-term FX structured products portfolio. Côme is highly interested in the development of crypto assets as a new asset class.

Côme holds a Master in fundamental physics and a postgraduate degree in fluid mechanics (Paris-Orsay University). He also completed a postgraduate degree in applied mathematics (EDPA, Université Paris-Dauphine).



Romain is responsible for BELEM’s strategy and operations.

He is a FinTech entrepreneur with 10 years’ experience in business development. After working in Investment Banking, he managed, from Hong Kong, the Asian development of First Finance, an Education Technology fast-growing start-up. Romain is an experienced speaker and lecturer on blockchain and crypto-assets (EDHEC, Banque de France, Société Générale, CDC, TF1, etc.).

Romain is a graduate of ESSEC Business School.
He also holds a certification in Data Science from X-Polytechnique.



Jeremy is in charge of all scientific and technical developments.

He has 10 years’ experience in Research & Development and computer science engineering. He has developed a suite of online tools for Big Data projects. Jeremy worked as a portfolio manager at John Locke Investments and built quantitative trading bots at Société Générale CIB.

Jérémy is a graduate of ENS Ulm in theoretical and applied mathematics, and computer science.
He is also a graduate of ENSAE.


Lead Developer

Victor is leading several blockchain and crypto currency projects.

He is a tech lover who graduated from the French coding École 42. Victor has been passionate about blockchain & crypto currencies since he started mining Dogecoin in 2013, and after several experiences in the film industry, he decided to dedicate himself to this field.