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Testimonials

What my colleagues say

Recommendation excerpts written by colleagues on LinkedIn

"From the very first moment, he welcomed me with his enthusiasm and passion for e-commerce, community, and the Spryker product."
Lauren Kulwicki
Senior Community Manager • Independent
Direct report
"I'm amazed at how quickly he adopts new technologies. For example, he rapidly mastered cutting-edge topics like Agentic Development, Vibe Coding, and workflow automation. Bringing this to Spryker resulted in higher efficiency and quicker improvements, lowering our TCO."
Christian von Schassen
Senior Director, Partner Success • Spryker
Leadership peer
"Guido is one of the most knowledgeable CROs I know. His understanding of building scalable experimentation teams as well as dealing with stakeholders is exemplary."
Manuel Da Costa
Founder & CEO • Efestra
Former technology partner
"Conversion rate optimization, psychology, leadership, and business are just a few of the topics he's spoken to at the highest level."
Erin Weigel
Principal Designer • Freelancer
Conference attendee
Flags

Countries where I presented

26 and counting!

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Brands I've worked with

From retail to telecom to financial services, I've helped teams across industries build stronger communities.

ANWB logo
Bol.com logo
Canal Digital logo
eBay logo
Euroflorist logo
Favorite Gifts logo
Heineken logo
Helly Hansen logo
ING logo
KPN logo
O'Neal logo
Randstad logo
Sanoma logo
Sara Lee logo
T-Mobile logo