Marcel van Dam

Marcel has worked for KPN and KPN Mobile in various commercial (management) positions. Resulting from his last position as an Area Director with KPN International Consultancy he founded NTCS in 2001, with Sjef as founding partner. Eversince he has helped NTCS expand.


Henk van Rooijen

Henk is a seasoned senior executive and has a wealth of expertise in innovation, transformation, operational excellence and ICT on board/C-level.


Partner and Consultant

Jelmer Gulmans

Jelmer focuses on broadband network technology strategy and deployment. Including fixed (FttH/HFC/DSL) and mobile networks as well as triple-play and value added services. He used to work with BTL in Belize as a Chief Strategy Officer and with Liberty Global as a Director Network Engineering. Since 2018 he is NTCS Partner.

Partner & consultant
+31 6 2189 8390

Mark Boeren

Mark Boeren has had various management position in the commercial sector, both in Marketing and Sales. In his last position at KPN he was the Sales Director. In 2017 he joined NTCS as an Associate Partner.

Partner & consultant
+31 6 5369 6086

Ise Vermeire

Ise is specialised in IT strategy, IT bids and sourcing queries. Besides his career in the Netherlands Ise has worked and lived a.o. in the Caribean and South Africa.

Business Development Manager and Consultant
+31 6 1940 9545

Petra van der Heij

Pertra works as Operations manager for NTCS. She takes care of project administration and is point of contact for consultants, clients and suppliers.


Operations Manager

Albert Bakker

Albert Bakker specializes in interim management, program and project management. He has been active in telecom and IT for over twenty years. Has experience in outsourcing changes within organisations, fusions, setting up new organisations and solution management.


Associate Partner