Who you'll work with

I have been optimizing websites for major clients all around the world over the last 7 years. I achieved 20% - 300% revenue growth for leading business in travel, SaaS, banking, insurance, media and e-commerce.

My experience

  • Senior CRO Consultant at Catchi, a world-leading CRO firm based in New Zealand, Australia.
  • Founder of Testbuilders
  • Founder and Senior Consultant at Conversion Heroes, a CRO Agency based in The Netherlands.

My skills

  • Conversion Rate Optimization
  • Experiment Strategizing & Prioritization
  • Customer Journey Mapping
  • Personalization
  • Data Analysis
  • Wireframing & UX Design


  • Persuasive Webdesign
  • Conversion Copywriting
  • Experiment Development
  • Agile and Scrum Methodology
  • Usability Testing
  • Optimizely & VWO Certified
  • Google Analytics & GTM Certified

photo gijs wierda

Why did I start working as a freelancer?

After I founded the agency Conversion Heroes with 12 employees and having worked as a consultant at the world-leading CRO firm Catchi in New Zealand, I found out that I get the most energy from working with great clients and achieving great results together.

I believe too much business decisions are based on wild guesses. It's my goal to help businesses by making more validated business decisions, based on data. I don't work with more than 3 clients at the same time, so you can rest assured you'll get the best results.

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