developR is the web studio of Seb van Dijk in Haarlem, the Netherlands. I build custom WordPress websites with ACF and Gutenberg blocks. I also develop web applications for business processes in PHP and CodeIgniter, such as purchasing, sales, inventory and transport apps. My work doesn’t stop at launch. With a maintenance contract (SLA), I keep websites up to date, secure and online. I keep an eye on hosting, PHP versions and security issues, and step in when needed. My clients are small and medium-sized businesses, foundations and publishers, in sectors such as the timber trade, trade media and healthcare.
developr.nlOctober 2026
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Wij creëren software die bijdraagt aan effectieve zorg en méér menselijk contact zodat de zorg toegankelijk blijft voor zorgverleners en cliënten
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