JOINSON&SPICE is a young accountancy firm, specialising in Technology, Media and Telecom. Our team varies from young post-graduates to experienced chartered accountants (in Dutch: RA) and accounting consultants (AA). The thing that brings us together: a passion for technology companies. With years of knowledge and experience stemming from a genuine interest in our specialities, we enjoy connecting with our customers and aiding in the growth of their companies. We believe in an equal partnership where sharing knowledge is paramount. Within the sub-sector of Technology we help data centres, hosting providers, software providers, system integrators, cloud providers and online retailers with important decisions.

Louis Vierkant

A message from the Founder, Louis van Garderen

"We love data. That is why we serve Technology clients only, and with the focus on audit of the more complex IT systems. In our services we are innovative and open minded. As founder of JOINSON&SPICE I realized that many scale-up companies lack the attention of their auditors on the topics they really need to focus on. Please feel free to contact me or any other staff of JOINSON&SPICE to find out how we can be of help."

Contact Us


Kraanspoor 40, Amsterdam 1033 ES

+31 020 333 0199

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Primary Contact
Louis van Garderen Photo

Louis van Garderen

Managing Partner

Firm Locations

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Primary Location

Kraanspoor 40, Amsterdam 1033 ES, Netherlands

Louis van Garderen
+31 020 333 0199


Louis van Garderen Photo

Louis van Garderen

Managing Partner

Gerke van Garderen Photo

Gerke van Garderen

Technology Officer

Sophie Bergisch Photo

Sophie Bergisch

Staff Accountant

Nienke Hilhorst Photo

Nienke Hilhorst

Office Manager

Thanh Nguyen Photo

Thanh Nguyen


Tobias Roeleveld Photo

Tobias Roeleveld

Manager Audit

Lisanne Rozema Photo

Lisanne Rozema

Audit Staff

Joost Stramrood Photo

Joost Stramrood

Audit Manager

Louren van Garderen Photo

Louren van Garderen

IT Audit Staff

Thought Leadership by JOINSON&SPICE