Our Management Team

The Leaseweb 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, founder and Chief Executive Officer of Leaseweb. 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 founder, I am very proud of Leaseweb’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 Leaseweb, I studied Law at the University of Utrecht in the Netherlands, and my deep passion for aviation led me to obtain an ATPL pilot license. I have flown as a captain on Boeing 747’s for 14 years. Outside the office, I enjoy spending time with my wife, two daughters, and very friendly dog, as well as sailing, mountain biking, and tennis.

Pieter Dijkhuis   Chief Financial Officer

Pieter Dijkhuis

I am Pieter Dijkhuis, Chief Financial Officer (CFO) of Leaseweb. In this position, I oversee all financial, business intelligence, ERP, risk, and tax functions within company. I view the finance team as a strategic partner for management, providing them with the information they need to make effective decisions, while freeing them up to focus on the customer. My team also provides a control framework for good governance and risk management in order to enhance the security of our customers’ data. We design the steering metrics that allow us to measure our performance and determine whether we are meeting our customers’ expectations. All of these are essential ingredients in developing a self-learning organization that can fulfill its mission of adding real value for customers.

Prior to my time at Leaseweb, I worked as finance professional in the banking, commodity trading and private equity industries. I have 20 years of international work experience, having worked in Amsterdam, Curacao, Buenos Aires, London, and New York.

I pursued my studies in Economics at the University of Groningen and obtained an executive MBA from Insead. When not working, I enjoy mountaineering and playing soccer with the Leaseweb team.

Svenja de Vos   Chief Technology Officer

Svenja de Vos

I am Svenja de Vos, Chief Technology Officer (CTO) of Leaseweb Global. I am responsible for the Product Management, Product Engineering, and System Administration departments. Together with my team, I am responsible for setting Leaseweb’s technical vision, scaling Leaseweb’s technology, pushing innovation, and further developing the company’s cloud hosting and cybersecurity services. Leaseweb is well known for delivering great products, and with the growing technology, we can cater our customers’ needs better.

Prior to joining Leaseweb, I have been involved with the telecom industry for almost 20 years. For the last 14 years, I worked as CIO in Austria and the Netherlands at Tele2, and as Director of Transformation for the Tele2 group.

Next to technology, my other passions in life are spending time with my friends and family, interior design, and Formula1.

Alexander Kalkman   Chief Marketing Officer

Alexander Kalkman

I am Alexander Kalkman, proud CMO of Leaseweb. Being part of a company that has an ambitious vision for the future of a growing industry, while getting to work with a diverse range of customers and colleagues from around the world, inspires me every day.

I joined Leaseweb in 2016 after having spent 20 years working in high-tech companies including, HP, Vodafone, Raet, and Essent. As CMO, I am responsible for branding, demand generation, strategic partnerships, PR, and event marketing. By bringing these pieces together into a harmonious whole, my goal for marketing is to shape our global brand while building on our rich legacy of entrepreneurship.

Building better brands and teams, while creating an atmosphere that inspires and challenges others, has been a passion for me since graduating from business school and my master’s degree in marketing. In my free time, I enjoy the great outdoors, spending time with my family, and restoring (and driving) classic cars.

Walter van de Waterbeemd   Chief Human Resources Officer

Walter van de Waterbeemd

I am Walter van de Waterbeemd, Chief Human Resources Officer, Leaseweb Global BV. I am responsible for all HR and Facilities related operations, including finding the right talent, scaling our global team, developing our talent, constantly improving the employee engagement - and do all these in an inspiring and transparent environment. I believe that contented employees will always lead to contented customers, translating to a good NPS.

For over 30 years, I have been working in the HR field with different industries – Defence, Public Service, Energy, Shipbuilding and Installation industry. Prior to Leaseweb, I have held the role of HR Director and other senior management roles with different companies such as the Dutch Air Force, Municipality of Maastricht, NRE, Damen Schelde Naval Shipbuilding and Feenstra.

I graduated from the Royal Military Academy for the Air Force and studied post academic Business Management at the University of Twente. I studied at the Defense Institute of Management Studies and earned a Master’s degree in Public Administration. In my free time, I like to cook gourmet dinners and play classical music with friends.

Arno Witvliet   Chief Sales Officer

Arno Witvliet

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

Prior to Leaseweb, 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.

Marilou van Doorn   Chief Operations Officer

Marilou van Doorn

I am Marilou van Doorn, the Chief Operations Officer (COO) of Leaseweb. Together with my teams I am responsible for delivering, maintaining and supporting our customer’s services 24/7. Our goal is to deliver the most reliable infrastructure, supported by the best customer service in the industry. We do this based on high levels of ownership, knowledge, passion and of course fun!

Prior to Leaseweb, I have worked in the technology scene for over 10 years, in operational and management roles with a focus on operational excellence and customer centricity, at companies such as Backbase, GFK and Wakoopa/Netquest.

I have an MBA from INSEAD, and a master’s degree in New Media and Digital culture from the University of Utrecht. Besides my job, I love playing the drums, cooking, and art (I hold a major in Modern Art History, and an undergraduate degree in Art).



Regional Management Team - The Netherlands


Arno Witvliet   Managing Director

Arno Witvliet

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

Prior to Leaseweb, 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.

Martijn Bethlehem   Finance Director

Martijn Bethlehem

I am Martijn Bethlehem, Finance Director of Leaseweb Netherlands B.V. In this position, I oversee all financial aspects within our local entity and help translate our company’s vision into revenue. I view the finance role as a strategic partner for management, providing them with key information to make effective decisions, while freeing them up to keep their focus on the customer. My role also provides support to Operations to optimize the occupancy of our Netherlands data centers, which results in faster delivery times and high availability of our core infrastructure for our customers.

Being with the company for 10 years, I am very proud to see how the company and the employees developed themselves from a local player towards a successful global company with highly satisfied customers. During the last 10 years, I held several finance management positions in Amsterdam and Frankfurt.

Prior to my job at Leaseweb, I worked as an auditor in one of the Big Four offices. I hold a bachelors’ degree in Auditing. When I am not working, I like spending time with my family, hiking, diving, soccer and traveling.

Julia Gortinskaya   Regional Sales Manager

Julia Gortinskaya

I am Julia Gortinskaya, Regional Sales Manager at Leaseweb Netherlands. I am leading a team of sales professionals covering CEE, Nordics, and ROW. We focus on offering solutions to Leaseweb customers and prospects, build and maintain relationships, and strive to improve the overall customer experience by closely listening to customers’ needs and understanding their goals and priorities.

I have been working at Leaseweb since 2012, starting as a Senior Account Manager. Prior to my time with Leaseweb, I worked as a Sales Manager at Linxtelecom - connectivity and data center services provider, and have more than 10 years’ experience in hosting and telecom industry.

I have a Master’s Degree in Applied Linguistics from Moscow State Linguistics University. During my free time, I enjoy reading, visiting classical music concerts, and love outdoor sports like skiing and running.

Gerben Sloot   Team Manager Inside Sales

Gerben Sloot

I am Gerben Sloot, Team Manager Inside Sales at Leaseweb Netherlands. My team and I are responsible for all incoming sales and sales related matters within Leaseweb Netherlands. The Inside Sales team is deeply committed to improving customer satisfaction and helping customers find with the best hosting experience. We view our customers as partners, and work closely with them to understand their unique needs.

I have worked for Leaseweb for over 10 years in a number of different sales positions, providing me insight and understanding of the industry, our customers, and what makes our offerings stand out in the market. Even after a decade at the company it’s still an exciting adventure with new challenges and opportunities arising every day. Prior to joining Leaseweb I spent 10 years working in the IT division of a large insurance company.

When I’m not at Leaseweb, I enjoy spending time with my family - having a 6 year old daughter gives you a lot of energy – watching movies or TV series, and heading out with friends for dinner, game nights, or a night at the bar.



Regional Management Team - United States


Lex Boost   Chief Executive Officer

Lex Boost

I am Lex Boost, the Chief Executive Officer (CEO) of Leaseweb USA. Together with my team, I am responsible for the development and execution of Leaseweb’s core vision and strategy across the United States. I enjoy the challenge of working continuously to expand Leaseweb’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

Chris Dorcsis

I am Chris Dorcsis, Finance Director of Leaseweb USA, Inc. I am responsible for Accounting & Reporting, Tax, Abuse, Administration, Legal & Compliance, and Merger & Acquisitions. I take pride in providing data, key metrics and support which enables the business to focus where it needs to focus: on the customer.

I am a CPA with over 20 years of experience in the accounting field. I have worked in all areas of accounting and finance throughout my career. Most recently, I worked as Finance Manager for one of the largest listed companies in Australia. Prior to this, I spent eight years as the Controller for a mental health company in Virginia. One of my key strengths is building and maintaining high functioning cohesive teams.

I earned my Bachelor’s degree in Accounting from George Mason University. I spent six years in the Marine Corps Reserves, including a tour in Desert Storm. When I am not working, I enjoy coaching baseball, cruising, spending time with my family, and working out.

Meg Riat   Human Resources Director

Meg Riat

I am Meg Riat, Human Resources Director for Leaseweb USA, Inc. I am responsible for all strategic HR and people-focused initiatives, including employee relations, training and development, benefits, performance management, recruiting and onboarding in the US.

I have over 14 years of experience across all functions of human resources. Much of my experience has been in the IT services and solutions industry. Most recently, I worked as the Human Resources Manager for an IT Consulting firm. I strongly believe in providing employees with the right tools and opportunities in order to drive them to perform at their best, which leads to high levels of energy, commitment, engagement and a strong company culture.

I graduated with a Bachelor’s degree in Psychology from Virginia Commonwealth University, and hold a “Professional in Human Resources” (PHR) certification and the “Society of Human Resources Management Certified Professional” (SHRM-CP) certification. I’m passionate about HR and serve on the Prince William Society of Human Resources Management (SHRM) Board of Directors. When not working, I enjoy spending time with my family and travelling.

Bart Dries   Operations Director

Bart Dries

I am Bart Dries, Operations Director at Leaseweb USA, Inc. Together with my team I am responsible for Leaseweb’s infrastructure in the US. For me, the discipline of Operations is uncompromisingly about continuity, stability, reliability and manageability. My team assures that those four key objectives are met on an ongoing basis.

I have been working in the hosting industry for nearly 20 years, 10 of those at Leaseweb. Before joining Leaseweb, I developed my operational knowledge of IT infrastructures at a number of European IT companies such as Demon and XS4all. I have been lucky enough to lead a wide range of departments through major changes in the industry. I implemented innovative processes and tactics, while minimizing risks and cost.

I completed my studies at Darden Business School at the University of Virginia. In my free time I enjoy exploring the Arizona country side with my family.

Richard Copeland   Sales Director

Richard Copeland

I am Richard Copeland, Sales Director at Leaseweb USA, Inc. I’m responsible for leading a team of sales professionals in executing the company’s vision by driving revenue growth, market share, and customer satisfaction in our 9 data center locations across the US.

Prior to joining Leaseweb USA Inc. in 2013, I worked for Verizon Business for 10 years in various account management and sales leadership roles. My responsibilities included providing telecom/hosting solutions to US customers in the SMB and enterprise space. Earlier in my career, I worked for a printed circuit board company where I held process engineering, production management, and customer technical support responsibilities during my 7-year tenure.

I received my Bachelor of Science degree from Virginia Commonwealth University in Richmond, Virginia. During my free time, I enjoy exercising, watching movies/sports and spending time with my family and friends.



Regional Management Team - Germany


Marcus Busch   Managing Director

Marcus Busch

I am Marcus Busch, Managing Director of Leaseweb Deutschland GmbH. I am responsible for the general management and operations of Leaseweb in the DACH region (Germany, Austria and Switzerland). This embraces focusing on customer relationships, ensuring the quality of service and accelerating growth, both locally and internationally. I joined Leaseweb in 2019, having spent more than 20 years working in global Telco/Digital Business including companies like Verizon, T-Systems, and Media Broadcast.

I pursued my studies in Economics at the University of Essen where I graduated in 1994. When not working or out with the dog, I enjoy road trips with one of my classic motorcycles, attending live concerts and playing tennis.

Thomas Kirchler Operations Manager

Thomas Kirchler

I am Thomas Kirchler, Operations Manager at Leaseweb Deutschland GmbH. In this position, I – together with my team – am responsible for the smooth running of all operational tasks in Frankfurt. My main responsibility is to ensure that all processes function smoothly to give our customers the best possible customer experience with our products.

We are able to achieve this goal by understanding our customers and including them as far as possible in our work.I have been working in IT for over 10 years and learned the business from scratch. I started as a trainee with an IT specialist before working as a support and procurement technician for several years. After a few years in the position of team leader I was promoted to Operations Manager. In the course of my professional career and in particular during my time with the volunteer fire brigade I have learned to remain calm and focused and to find solutions, especially in stressful situations – this is something that today helps me to offer our customers the best possible service.

Before starting my career, I trained as an IT systems specialist at the Werner-von-Siemens school in Frankfurt am Main. I like to spend my free time with my dog, hiking and riding my motorcycle.

Robert Zilliger   Sales Manager

Robert Zilliger

My name is Robert Zilliger, I have been Sales Manager Germany since March 2020 and I am responsible for the sales areas Acquisition and Account Management as well as Inside Sales. The focus of my daily work is on customer satisfaction and the success and growth of our organisation in the DACH region.

Before joining Leaseweb, I held various sales and management roles in the area of managed hosting and cloud services at Telefónica Germany GmbH, Host Europe GmbH, Strato AG and Fujitsu Technologies GmbH. In 1996 I finished my studies of telecommunications engineering at the Deutsche Telekom University Berlin of Applied Sciences as a graduate engineer (FH).

In my private life I spend my free time with diving since several years. Furthermore I am a football fan and keep my fingers crossed for my Berlin team Hertha BSC.

Brigitte Raab   Team Manager of Operations

Brigitte Raab

I am Brigitte Raab, the Team Manager of Operations at Leaseweb Deutschland GmbH. Together with my teams, I am responsible for Accounts Payable, Accounts Receivable, Level 1 Support, and Client Service Delivery. Our primary goal is to take ownership of every client’s need, from the first customer contact and in all following phases of our cooperation.

I have been with Leaseweb since 2000 and always focused on Customer Care, with skills I developed previously as an Event Manager, and from many years working in the hospitality industry. Throughout my career, I have always listened to my customers and ensured their experience and success is met. I enjoy working with teams, drawing people together, and motivating people to work towards a shared goal.

In my earlier life, I have completed an apprenticeship in the hotel industry in Moers and commercial studies at the Merkur Akademie International in Karlsruhe. Outside of work, I enjoy spending time with my family and friends.



Regional Management Team - Singapore


Benjamin Schönfeld   Managing Director

Benjamin Schoenfeld

I am Benjamin Schönfeld, Managing Director of Leaseweb Asia Pacific. I am responsible for the general management and operations of the Singapore office, taking the company’s global vision and translating it into a local identity for the Asia-Pacific region. 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 Leaseweb, 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.



Regional Management Team - UK


Terry Storrar   Managing Director


I am Terry Storrar, Managing Director of Leaseweb UK Ltd. I am responsible for general management in the UK, where I oversee business development and operations, with particular attention to expanding the company’s cloud product portfolio. My focus is on execution and delivering exceptional value for our customers.

I joined Leaseweb in 2020 and brought more than 20 years of expertise across a range of specialized services, including managed services, cloud, hosting, implementation and architecture. Prior to joining Leaseweb, I worked in director-level roles for several UK entities, from startups to national enterprises.

I pursued my studies at Hewens College. When not working I enjoy spending time with my wife, two daughters and our dog. I like travel, sporting events, food, keeping fit and I am a very keen golfer.


Leaseweb Network Management Team


Bart van der Sloot   Managing Director

Bart van der Sloot

I am Bart van der Sloot, Managing Director of Leaseweb Network B.V. My team builds, manages and supports Leaseweb’s networks and internet traffic around the world and the networking products and services in Leaseweb’s portfolio. Since “server-to-eyeball” network performance has a big impact on the end-user experience of any Leaseweb 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 Leaseweb in 2014, I worked 14 years at Level 3 Communications, developing and managing sales teams across Europe (and serving Leaseweb 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 Leaseweb because I was attracted to its entrepreneurial spirit, to its culture to empower people, and to the talents and teamwork I perceived when Leaseweb 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.