About us

Who we are and what we do

Quality time is planned by you

detron.datumprikker.nl is the pre-eminent tool to bring families, friends and business relations together.

Our website is visited more than 60 million times a year enabling 7 million unique users to create their events through detron.datumprikker.nl The team behind detron.datumprikker.nl consists of more than 10 creative minds and is located near The Hague.

Quality time means getting together with family, friends and business relations. We believe that you’re the only one planning this quality time, but it is done a lot easier with an application that helps you take the initiative.

Datumprikker is a household name in The Netherlands, but at the same time a starting point for an even smarter international platform called Cally, with which we have planned to have reached over 100 million users in the next 5 years.

To achieve this goal detron.datumprikker.nl follows a strategy based on three fundamentals: personalization, experience and intelligence.



Events made


Unique users


Participants invited


Dates suggested

The team behind detron.datumprikker.nl

Geert Merkelbach
Henk de Boer
Paul Bongers
Mark van der Velden
Gwenn de Graaf
Product Owner
Geert Jonker
Data Scientist
Ninke Hensbergen
Marketing Manager
Rik de Vries
Business Manager
Jurgen de Koning
Operations Manager
Eddie Horde
Front-end Developer
Leon de Brabander
Web & App Developer
Saurabh Garg
App Developer
Koen Hendriks
Web Developer
Guillaume de Sagazan
Ravi Gajadin
App Developer
Maurice Timp
User Interface Designer
Maarten van der Meer
User Interface Designer
Martijn Korendijk
Graduate Intern
Mitchel Hulst
Graduate Intern
Jan Drewes

Would you like to contact one of our team members? Do you have a genius idea or do you want to have a look at your future workplace?

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Turfschipper 7-9
2292 JC Wateringen (directions)