
Our Team
Cyso is powered by a team of more than 60 professionals with expertise across cloud, infrastructure, security, development, support, and business. Together, we help organisations build, manage, and grow reliable digital environments.
What connects our team is a shared passion for technology, a practical mindset, and a strong focus on collaboration. From engineers and developers to consultants and support specialists, everyone contributes to delivering secure, flexible, and future-ready solutions for our customers.

Leadership
Cyso was founded 30 years ago by three friends from Alkmaar: Sven Visser, Tjebbe de Winter and Paul Bankert. What started during their student years still forms the foundation of Cyso today, with all three founders actively involved in the company.


Tjebbe studied Artificial Intelligence at the University of Amsterdam and is co-founder and director of Cyso. He focuses on sales, new business and service delivery. Originally from Texel and raised in Alkmaar, he now lives in Heiloo with his family. In his free time, he enjoys skiing and sailing.

Paul studied International Strategy Management and Economics at the University of Amsterdam and co-founded Cyso, where he is director. He focuses on finance, marketing, development and cloud. Outside Cyso, he invests in tech and advises startups and scale-ups. In his free time, he enjoys travelling and classic cars.
Powered by 60+ specialists
Behind Cyso is a team of more than 60 specialists working across cloud, infrastructure, security, development and support. Together, we combine deep technical expertise with a personal approach to deliver reliable solutions and long-term support for our customers.

Meet your first contacts
Looking for advice, have a question about our solutions or simply want to explore what Cyso can do for your organisation? Our team is here to help. Meet the people who can point you in the right direction and connect you with the right specialists.

Martijn, your first contact for new business and partnerships at Cyso Cloud who's always up for conversation about opportunities or mountain trails. You'll probably meet him at events, where he'll tell you why the Netherlands is frustratingly flat for a serious hiker. This food-loving, city-hopping dealmaker balances partnerships with alpine adventures and discovering European musea.

Dexter, our Business Developer with a sharp eye for cloud and cyber security opportunities who loves getting to the bottom of how technology actually works. You're likely to meet him at events or discovery calls, where he'll explain why your digital infrastructure needs to be both sovereign and secure. This gym-going, tech-diving people person balances closing deals with heavy lifts and keeping up with the latest in cyber threats.

Martijn studied Marketing at Vrije Universiteit Amsterdam and is Sales Manager at Cyso. He focuses on customer success, long-term relationships and connecting commercial goals with technical solutions. With a background in marketing, sales and cloud infrastructure, he helps customers find solutions that fit both their business and technical needs.

Jeroen is Strategic Account Manager at Cyso, advising customers on cloud, cybersecurity and managed services. With 30 years of experience in IT, including roles at IBM, Microsoft and Oracle, he combines technical understanding with a strong focus on long-term customer relationships. Outside work, he enjoys sports, reading and building Lego.

Jan-Sjoerd is Account Manager at Cyso, helping customers navigate cloud infrastructure, cybersecurity and digital sovereignty. He focuses on understanding customer needs and translating them into solutions that create long-term value. With a strong interest in technology, he enjoys bridging the gap between complex infrastructure and practical business needs.

Yick studied Commerce with a specialisation in ICT Management and works at Cyso, where he helps customers navigate cloud infrastructure and technology solutions. With a strong background in sales, enterprise technology and more than five years of experience in software licensing, including hybrid licensing models for infrastructure, he combines commercial understanding with technical expertise to build long-term customer relationships.
Technology is what we build. People make it work.
Behind every platform, cloud environment and solution is a team that shares knowledge, challenges ideas and solves problems together. At Cyso, expertise matters, but so do curiosity, collaboration and enjoying the work along the way.

Colleagues in the spotlight
Cyso is more than technology, it’s the people behind it. Meet some of our colleagues and discover the expertise, experience and personalities that make our team what it is.

Samanta Marques
With her Portuguese charm, our Cloud Manager Samanta transforms project chaos into organised success while keeping everyone on track. She brings several years of PM and Operations experience to the cloud team, where she's known for making complex timelines look deceptively simple. This travel-loving, sports-enthusiastic strategist balances coordinating our initiatives with capturing perfect photography shots and claiming decisive board game victories.

Roos Vreeker
As our Front End Developer, Roos ensures our site looks stunning. She has a knack for asking the right questions to drive continuous improvements. With her sharp wit and cheerful demeanour, she's an invaluable part of our team.

Maïra Piket
Maïra works at Cyso, where she combines a commercial mindset with a strong focus on customer service and communication. She helps customers find the right solutions and ensures they receive clear, personal support. Social and hands-on by nature, she enjoys connecting with people and turning questions into practical solutions.
We’re always looking for talent!
Great people make great technology. We’re always interested in meeting curious, driven people who want to grow, share knowledge and build meaningful solutions together. Think you’d be a good fit for Cyso? We’d love to hear from you.
