Senior Web and E-commerce Developer with 20+ years of experience building and maintaining production websites, e-commerce platforms and business integrations.

My strongest background is in JavaScript, PHP, WordPress/WooCommerce, REST APIs, databases, performance and web infrastructure. I'm currently developing practical skills in TypeScript and React, with working knowledge of Node.js, PostgreSQL, Svelte and Astro.

• Build and maintain custom WordPress and WooCommerce solutions for real businesses
• Develop bespoke plugins for complex workflows and integrations
• Improve performance, SEO, accessibility and production stability
• Manage hosting, migrations, servers and cloud environments
• Integrate external services, marketing platforms and ERP systems through REST APIs
• Support marketing teams with web assets, image editing and occasional video editing

• Programming & Markup: JavaScript (ES6), PHP 8.3, HTML5, CSS3, jQuery, LESS, SASS, REST APIs
• CMS, E-commerce & ERP: WordPress, WooCommerce, Strapi CMS, JTL ERP
• Databases: MySQL, MariaDB, PostgreSQL
• Additional Web Technologies: Node.js, Svelte, Astro
• Currently Learning: TypeScript, React, Python and AI fundamentals
• DevOps & Infrastructure: Git, Cloudflare, cPanel, Cloudways, LAMP, Nginx, Apache
• SEO & Analytics: On-site SEO, Schema.org structured data, Google Analytics, Umami Analytics, Ahrefs, Screaming Frog
• CSS Frameworks: Bootstrap, Foundation, Tailwind
• Design & Media: Figma, Photoshop, Lightroom, Premiere, DaVinci Resolve

Senior Full Stack Web Developer — goodvibe GmbH (2022–2026)

• Developed custom plugins and integrations for e-commerce platforms
• Led site migrations and infrastructure upgrades
• Improved performance, SEO and system stability
• Integrated JTL ERP with WordPress and WooCommerce

Freelance & Agency Work (2007–2021)

• Delivered end-to-end web solutions from design to deployment
• Built custom CMS solutions and e-commerce platforms
• Managed hosting, servers, maintenance and optimization
• Produced and edited digital assets for web and marketing projects

• Developing practical skills in TypeScript and React
• Expanding experience with Svelte, Astro and modern CMS architectures
• Learning Python and AI fundamentals

• Spanish: Native
• English: Very good oral and written
• German: B1, progressing towards B2
• Italian: A2, progressing towards A2

• Portfolio: https://daxcastellon.dev
• GitHub: https://github.com/dcaste
• LinkedIn: https://www.linkedin.com/in/daxcastellonmeyrat/