Dennis Mulder started his career in 1997, choosing to dedicate himself to Microsoft technology. As an early adopter of Microsoft technology, Dennis has kept pace with certification challenges and succeeded in getting several certifications. In August 2004, he started work with Avanade, a Microsoft and Accenture joint venture. Currently he is focused on a few areas of the Microsoft platform, specifically service orientation, integration, and infrastructure for development. As a consultant based in the Netherlands, Dennis works with enterprise customers to solve their challenges by leveraging the power of the Microsoft platform. Besides his role as a principal consultant, Dennis is a solution manager and evangelist focusing on several of the Avanade assets. Every now and then, he writes articles for Microsoft .NET Magazine, a Dutch publication.

He is a frequent speaker at Dutch Microsoft conferences and usergroups, and he has become an INETA speaker as of early 2006, which gives him some visibility outside of the Netherlands as well.