Viadeo, the professional social network with 40 million members worldwide, announced today the acquisition of the Dutch startup Soocial. Founded in 2007, Soocial specializes in contact management and synchronization. As part of the acquisition, Soocial’s development staff will be joining Viadeo to work towards improving the overall user experience on the professional social network.

With the acquisition, Viadeo aims to provide the best of Soocial’s features to help members manage, organize, back up and easily and safely share their address books. The features will allow members to synchronize their contacts across more than 500 platforms, messaging services and devices, including PCs and smartphones.

“Contact and synchronization management can quickly become a nightmare for a professional who must often juggle multiple formats of business cards and various electronic devices,” said Dan Serfaty, CEO and founder of Viadeo. “We are very pleased to announce the Soocial acquisition, which will provide our 40 million members worldwide with the best technology to manage their contacts.”

“We are very excited to be working with Viadeo,” said Stefan Fountain, co-founder and CEO of Amsterdam based Soocial. “This acquisition allows us to work together to achieve a common goal of providing our members with a way to get the best and the most out of their contacts—ultimately expanding their network.”

Viadeo was founded in 2004 and has offices in Paris (HQ), London, San Francisco, Beijing, Madrid, Barcelona, Milan, Dakar, New Delhi and Mexico City. The professional social networking platform has over 300 employees. The Soocial team, which counts 6 people, will remain in Amsterdam.