{"format_version":"lexandry.http.v1","guide_url":"/agents.json","notice":"Contributor supplied; source control is verified only where a listing's provenance says so.","id":"4cb256e9fcb8ba53189c02ecbe397ea9c37c159fc40ec7c68615dbb477f08515","title":"developR","url":"https://developr.nl/","category":"Agencies & firms","description":"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.\r\n\r\nMy 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.\r\n\r\nMy clients are small and medium-sized businesses, foundations and publishers, in sectors such as the timber trade, trade media and healthcare.","tags":["WordPress","ACF","PHP","CodeIgniter","web applications","website maintenance","SLA","Haarlem","Web development","AI"],"details":["Team size: 1","Founded: 2009"],"updated":"2026-10-23","link_checked":"2026-10-23","source_control_verified":true,"search_context":{}}