Our Management Team

The ADNET management team is made up of leading experts in the field who are bound together by the shared desire to create a company that treats its customers as partners, continually working to find innovative, reliable, and fully customizable solutions for their unique business needs. Get to know our team and their visions for the industry.


Our Global Management Team


Con Zwinkels   Chief Executive Officer

Con Zwinkels

I am Con Zwinkels, co-founder and Chief Executive Officer of ADNET. Since the company was founded in 1997, I have worked together with the management teams to define the overarching strategic direction for the company. As a co-founder, I am very proud of ADNET’s growth, prosperity, and innovation as well as our ability to not simply meet our customers’ expectations but to work closely with them to create both the best possible products and real long term relationships. Having been active in the industry since 1997, I am both passionate about and have deep familiarity with all aspects of the cloud hosting and data center sector.

Prior to my time with ADNET, I studied Law at the University of Utrecht in the Netherlands, and my deep love of aviation led me to obtain an ATPL pilot license. I have flown as an airline pilot on Boeing 747’s for 14 years. Outside the office, I enjoy spending time with my wife, two daughters, and very friendly black Labrador, as well as sailing, mountain biking, and tennis.

Pieter Dijkhuis   Chief Financial Officer
Svenja de Vos   Chief Technology Officer
Alexander Kalkman   Chief Marketing Officer
Walter van de Waterbeemd   Chief Human Resources Officer
Arno Witvliet   Chief Sales Officer
René Olde Olthof   Chief Operations Officer



Regional Management Team - The Netherlands


Arno Witvliet   Managing Director

Arno Witvliet

I am Arno Witvliet, the Chief Sales Officer of ADNET since 2016. In this position, I oversee all commercial operations of ADNET worldwide with a clear focus on achieving the overall topline objectives of the company.

Prior to ADNET, I served UNIT4 as SVP & Global Transformation Officer leading the transformation of the worldwide sales organization. Earlier in my career I have been in senior leadership positions with Atos as the SVP Global Sales & Marketing, for Canopy Cloud and OpenText/Cordys as the VP & General Manager for Continental Europe.

I hold a master’s degree in business economics from the Erasmus University Rotterdam.

Eltjo Hofstee   Sales Manager
Martijn Bethlehem   Finance Director
Julia Gortinskaya   Regional Sales Manager
Gerben Sloot   Team Manager Inside Sales



Regional Management Team - United States


Lex Boost   Chief Executive Officer

Lex Boost

I am Lex Boost, the Chief Executive Officer (CEO) of ADNET USA. Together with my team, I am responsible for the development and execution of ADNET’s core vision and strategy across the United States. I enjoy the challenge of working continuously to expand ADNET’s global presence and to strengthen our customer connections by increasing the number of our data center locations. I love to explore innovative ways of working that would enhance our customer experience.

With over 20 years’ experience in the digital industry, I have gained leadership experience from a broad range of organizations and cultures, including both B2B and B2C markets, in startups, as well as large corporations. In previous roles, I have worked as the CEO of one of the largest dating websites in the Netherlands, owned by the European TV giant RTL - Bertelsmann. Prior to that, I was Head of Digital for PaperlinX, one of the world’s largest communication materials merchant, with over $6 Billion in revenues and over 6000 people worldwide. I also have extensive experience managing start up companies from 1997 to 2012, in the SaaS and Mobile application space.

I studied at Delta University in Utrecht (Faculty of Business Economics) where I earned a BA in Business Economics. Since then, I’ve followed a number of different courses, and most recently, an executive course at Nyenrode Business University. When not working, I enjoy classic cars (also racing them), traveling, attending live concerts, and playing tennis.

Chris Dorcsis   Finance Director
Meg Riat   Senior Human Resources Business Partner
Bart Dries   Operations Director
Richard Copeland   Sales Director



Regional Management Team - Germany


Benjamin Schönfeld   Managing Director

Benjamin Schoenfeld

I am Benjamin Schönfeld, Managing Director of ADNET Deutschland GmbH. I am responsible for the general management and operations of the German office, taking the company’s global vision and translating it into a local identity for the D/A/CH market. Involved in all aspects of the business, I work to ensure both local growth and the global success of the company. Having served in a number of different positions within ADNET, I know the company inside out, something that helps me understand and meet the needs of our partners.

Over the course of my career, and especially during my time in the German army, I have learned to be disciplined, focused, and goal oriented, lessons that I apply to daily business to increase efficiency, coordination, and ultimately to create the greatest benefit for our customers.

Prior to beginning my career, I studied economics and management at the Fachakademie der Wirtschaft in Bielefeld. When not in the office, I’m active in politics and spend time volunteering.

Thomas Kirchler   Team Manager Datacenter Operations
Patrick Buchna   Team Manager Inside Sales



Regional Management Team - Singapore


Bas Winkel   Managing Director

Bas Winkel

I am Bas Winkel, the Managing Director of ADNET Asia Pacific. I oversee all aspects of business oversight and development of ADNET in Asia - from Operations, Customer Service, HR, to Sales and Marketing. This encompasses looking for new data center expansion opportunities in Asia, building strong relationships with partners and resellers, accelerating ADNET’s global growth, and ensuring our customers receive the service they expect and deserve.

I have lived and worked in Singapore since 2000. Prior to working with ADNET, I held senior positions in IT, Operations, and Finance at ING Bank. I hold a Master’s degree in Economics from the University of Groningen, The Netherlands, where I majored in Finance, Accounting, and Investment theory.

When I am not working, I enjoy spending time with my family, and also a wide range of sports activities like sailing, golf, mountain biking, running, and playing football with my friends.


CDN Management Team


Julien Lehmann   Managing Director

Julien Lehmann

I am Julien Lehmann, Managing Director of ADNET CDN B.V. Since 2014, I oversee all aspects of our CDN and Web Site Protection services, with a clear focus on delivering the best performance and expertise in a personalized manner. I work to ensure the success of this key global service so that the applications developed by our customers reach their market at lightning speed.

Prior to ADNET, I held senior leadership positions in various telcos and CDN companies in Europe, contributing to the launch of new services. I have 15 years of international work experience, having worked in Amsterdam, Bern, Barcelona, Mexico, Delhi, and Tokyo.

I hold an MS in Electronics from Polytechniques de Grenoble and an MBA from INSEAD. Outside the office, I enjoy spending time with my two daughters.



ADNET Network Management Team


Bart van der Sloot   Managing Director

Bart van der Sloot

I am Bart van der Sloot, Managing Director of ADNET Network B.V. My team builds, manages and supports ADNET’s networks and internet traffic around the world and the networking products and services in ADNET’s portfolio. Since “server-to-eyeball” network performance has a big impact on the end-user experience of any ADNET hosted content or application, we are passionate about finding the fastest route through the Internet and minimizing packet loss – while maximizing uptime and protecting our customers against cybercrime.

Prior to joining ADNET in 2014, I worked 14 years at Level 3 Communications, developing and managing sales teams across Europe (and serving ADNET as a customer since 2007). Before Level 3, I spent 11 years at Philips Electronics in various product management and marketing functions and building a Professional Services business around Philips’ business telephone systems and call centre products.

I joined ADNET because I was attracted to its entrepreneurial spirit, to its culture to empower people, and to the talents and teamwork I perceived when ADNET was my customer – and so far, all of that has proved true. In December 2016, I was elected to the Executive Board of the Amsterdam Internet Exchange (AMS-IX) where I fulfil the role of Treasurer.

I graduated in 1988 and hold a Master’s degree in Telecommunications from the Technical University Delft. When not working, I try to find the right balance between consuming calories (by cooking and enjoying food) and burning them (by running and cycling), preferably with family or friends.