Kaj Esser is a seasoned freelance marketing specialist with extensive experience in online marketing across various sectors, including public and non-profit organizations. Currently engaged with Simavi, Kaisser, MKB-Nederland, and several other companies, Kaj's areas of expertise encompass SEA, SEO, social media advertising, and campaign management. Notable projects include the Dag van de Ondernemer and Werkgeverstesten, as well as maintaining Google Ads campaigns for Golfcentrum Noordwijk and HOTBIN Composting. Kaj holds a Master of Science in Economic and Consumer Psychology and a Bachelor of Science in Psychology from Leiden University, complemented by a VWO in Economics and Society from Christelijk Lyceum Zandvliet.