About
Theo has over 20 years of experience building and optimizing websites. He currently works as a freelance conversion optimization specialist from The Netherlands and has collaborated with over 180 clients across 10+ countries. In recent years, Theo has shifted his focus toward sustainability, leveraging his expertise in research and experimentation to help companies adopt sustainable business practices. An avid learner, he has studied extensively in this field, diving into hundreds of books and academic articles. As a recognized expert, Theo is also a top-rated keynote speaker on this topic, inspiring audiences worldwide to embrace sustainability.