The Founder           


Nathalie Biderman founded Calya International in 2012. During her 30 years of professional experience, both in France and abroad, Nathalie has built a unique worldwide network of decision makers. 
She began her career as an attorney of law in Paris. As an adviser to the 1992 Organizing Committee of the Albertville Winter Olympic Games, she was mostly involved with marketing and communications strategies.

Nathalie later joined the leading US law firm Cleary, Gottlieb, where she dealt mainly with multinational corporations in the context of their business development and corporate restructuring plans in Europe.

She left law in 1999 to test her entrepreneurial skills and experience the e-bubble. Based in Barcelona, she joined the  founding team of eDreams, a start-up now leading the European on-line travel market.

In 2003, Nathalie Biderman joined the Havas Group’s international public affairs team. She was soon promoted COO of the the Group's PR network. For nearly 10 years, she advised French and international corporations, institutions, NGOs and personalities, primarily from the political and economic arenas, in their global communications strategies.

With her unique expertise, gained mostly in the fields of business development, public affairs, lobbying and crisis management, Nathalie set up Calya International in 2012.

Since June 2013, Nathalie Biderman has served as a member of the Supervisory Board of HighCo, a non-media communications group listed in compartment C of NYSE Euronext Paris.

In 2020, she was appointed one of Israel Foreign Trade Advisers to the French Ministry of Foreign Affairs.

Nathalie holds an M.B.A from INSEAD, a Master of International Law from Georgetown University and a Tax & Business Law Degree from University of Paris II-Panthéon. She is also a member of the New York State Bar Association.


Nathalie Biderman cooperates with a team of selected Israeli and European partners, including:

  • venture capitalists

  • investment bankers

  • entrepreneurs

  • leading experts in each sector of innovation (healthcare & life sciences, cyber, smart mobility, energy saving, agritech, IoT…)



Calya International is a human-sized consultancy specialized in international business development & networking.


We connect European companies and governments to the key-players of the Israeli innovation ecosystem.


We use our extensive international network to help Israeli start-ups develop new markets in Europe.