Karel Callens - Product School Instructor
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Karel Callens

CEO, Cumul.io

Karel Callens is the CEO at Cumul, where he also leads product efforts.

Karel helps SaaS companies create the ultimate customer analytics experience with a cloud-first, API-first building block for embedded dashboards. He previously was a data visualization consultant at DXP and Data Visualization Advisor to the Belgian government.


Karel earned his first Master's degree from KU Leuven. He graduated with honors for this degree in Economics. He also holds a Master's in Management of Innovative Organizations from the Université Catholique de Louvain. Additionally, he graduated from a course in Data Analysis at Johns Hopkins University.

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Entry Requirement:

For those who have never held a Product Management role

Product Manager Certification™
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Entry Requirement:

You must be a current Product Manager

Senior Product Manager Certification™
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Entry Requirement:

You must be a Senior Product Manager or higher

Product Leader Certification™
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