About Us


Erwin Hemmen

Infradata BV

Managing Director

Erwin Hemmen became Managing Director of Infradata Netherlands in April 2017. Prior to this role, he held the position of Director of Sales & Partner Sales at Eurofiber. Erwin is responsible for the strategic, tactical and operational activities of Infradata in the Dutch market. Under his direction the team is delivering superior high-end network and security solutions for service providers and organisations with mission critical networks. As part of his executive remit, Erwin is also contributing to the development and growth of the Infradata group as a whole.

Nino Tomovski

Infradata International

Vice President

Nino Tomovski is International Vice President of Infradata and responsible for the international representation of Infradata. Nino Tomovski has held positions as Director of Sales, Marketing and as Director of Operations at several network integrators.

In his current position as Vice President International, Nino Tomoski is responsible for the international growth of Infradata. He holds a master degree in Engineering and Information  Systems at the Northeastern University in Boston.


Leon de Keijzer

Infradata Group


Leon de Keijzer is the founder and CEO of Infradata. He is a veteran in the communication technology and has held management positions at several organisations like Q&I Networks, Landis Public Networks (Detron) and Imtech Telecom.

He is an expert on the service provider and network operator market. He holds a master's degree in business economics at the Erasmus University of Rotterdam.