An elegant and sustainable tech setup

We are aware of the role tech plays in our world. Think of data collection, lack of diversity, misinformation and monopolization. How can we harness the power of tech in a way that benefits everyone? We have an eye for sustainability, privacy and inclusiveness.


Servers that run websites use quite a bit of power. For each website, think of a vacuum cleaner that is fully on day and night. That sounds nice and clean, but the climate thinks otherwise. We are actively working to minimize the impact of hosting on emissions.

A website that doesn’t have to be generated from a database with every visit already costs a lot less computing power, and is therefore more sustainable. This idea, which goes a step further than the old concept of caching, is a big step in making websites more sustainable. Combined with microservices for dynamic elements, we build a website that is super fast and greener than your Tesla.

Ethical tech and inclusive design are no longer nice-to-haves. They are fundamental to everyone in our society.
Harmen Janssen, Tech Lead


Many big tech companies – especially advertising companies – sell your personal information to the highest bidder. Something we fight against with the initiative Je staat te koop.

Our personal data is also vulnerable to hackers at non-profits and government organizations. At GRRR we have had an eye for data security for a long time. The sites and apps we develop comply with current and future regulations in the field of privacy and data use. That is why parties such as the Municipality of Amsterdam and various Ministries like to work with us.

We like to go the extra mile to protect users. We store data in as few places as possible. And what is needed in terms of data, we process anonymously. Most partners would like insight into the use of their website by Google Analytics. We understand that, but we implement it anonymously. In this way, in the event of a hack, the customer’s personal data will not be exposed. That’s ethical.

In this article (in Dutch) written for the Code of Kinderrechten, developer Ramiro explains how we handled children’s data when developing the SpangaS app.