About us

Creating value for you, ourselves and society, together

From our clubhouse in De Bilt, we develop crucial software solutions for leading organizations. We do this by being close to our clients as a reliable 'co-pilot' and
by taking on challenges to create positive value.

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We are Thesio

Thirty software specialists who do not shy away from a challenge. What binds us is the diversity of clients, solutions and personalities within our teams. We love change and get satisfaction from finding the right solutions. We seek our reward in the value that we create for our clients. Because quite simply - we just love software solutions that make an impact and are seen in the market.

We remain ourselves and seek equality and openness in cooperation. We don't use buzzword, but tell an honest story. Strangely enough, these are important success factors that are often missing in collaborations.

We want to be the number one local software partner for the SaaS Top 100, setting standards for innovation and efficiency.

Our green clubhouse in De Bilt
10+ years
proven track record in software development
15+ clients
who we continuously help with software development
25+ specialists
in-house with various areas of expertise
3 awards
won for our innovative solutions
Amy Booister
UX Designer
Profile image of Wolf
Wolf Hijlkema
Head of Operations
Profile image of Ruvar
Ruvar Spauwen
Software Engineer
Profile image of Kirsten
Kirsten Groenendijk
Digital Project Manager
Profile image of Brian
Brian Diephuis
Head of Engineering
Profile image of Jurgen
Jurgen Dingemans
CEO
Profile image of Cathelijne
Cathelijne Rutten
Technical Lead
Profile image of Robert
Robert Lewandowski
Technical Lead
Profile image of Hannah
Hannah Gathu
Software Engineer
Profile image of Frits
Frits Mensink
Software Engineer
Profile image of Gio
Giovanni Dogger
Software Engineer
Profile image of Diesmer
Diesmer Hensbergen
Software Engineer
Profile image of Joost
Joost Wilbrink
Head of People
Profile image of Tamara
Tamara Jongerius
Hostess & facilitair
Profile image of Bastiaan
Bastiaan Niamut
Technical Lead
Profile image of Maaike
Maaike Blekman
Software Engineer
Profile image of Joep
Joep Seuren
UX Designer
Profile image of Juri
Juri Miralles
Software Engineer
Profile image of Leon
Leon van Kampen
Software Engineer
Profile image of Keven
Keven van Zuijlen
Software Engineer
Profile image of Wolf
Wolf Hijlkema
Head of Operations
Amy Booister
UX Designer
Profile image of Ruvar
Ruvar Spauwen
Software Engineer
Profile image of Kirsten
Kirsten Groenendijk
Digital Project Manager
Redmer de Vries
CCO
Profile image of Brian
Brian Diephuis
Head of Engineering
Profile image of Jurgen
Jurgen Dingemans
CEO
Profile image of Cathelijne
Cathelijne Rutten
Technical Lead
Profile image of Robert
Robert Lewandowski
Technical Lead
Profile image of Hannah
Hannah Gathu
Software Engineer
Profile image of Frits
Frits Mensink
Software Engineer
Profile image of Remco
Remko Janger
Head of Finance
Profile image of Gio
Giovanni Dogger
Software Engineer
Profile image of Diesmer
Diesmer Hensbergen
Software Engineer
Profile image of Joost
Joost Wilbrink
Head of People
Profile image of Tamara
Tamara Jongerius
Hostess & facilitair
Profile image of Bastiaan
Bastiaan Niamut
Technical Lead
Profile image of Maaike
Maaike Blekman
Software Engineer
Profile image of Joep
Joep Seuren
UX Designer
Profile image of Juri
Juri Miralles
Software Engineer
Profile image of Leon
Leon van Kampen
Software Engineer
Profile image of Keven
Keven van Zuijlen
Software Engineer

Sustainable partnerships

We are in it for the long term. As colleagues among ourselves, but also with our clients. It is therefore essential that we ensure that we understand each other and know what drives us.

We are a match if...

you are for an agency that has a clear and well-founded opinion and vision.
we don't always have to agree, because we believe that discussions lead to progress.
you want to take on challenges with shared responsibility, because that's what working together is really about.

Not a potential client?
Then come and work with us!

Would you like to help various organizations with their software solutions with a passionate team and new technology?
Check out the vacancies at Thesio.

It's time to get to know each other.

Now that you know who we are, we are - in turn - curious who you are. We would like to get to know each other in order to see whether we can help your organization excel with software development.