Sergio Daniel D.

If your Shopify, HubSpot CMS, or WordPress site is slow, hard to update, buggy, or too dependent on developers, I can help you fix the real problem without adding more technical mess. I work with agencies, ecommerce brands, and marketing teams that need reliable development beyond basic content edits: clean implementation, troubleshooting, performance improvements, reusable modules, flexible templates, and CMS/ecommerce structures their team can actually manage. I bring 13+ years of hands-on web development experience and 8,800+ hours on Upwork across Shopify, HubSpot CMS, WordPress, and WooCommerce projects for US-based agencies and ecommerce brands. Common projects I can help with: - Shopify theme improvements, custom sections, templates, product page updates, metafields/metaobjects, and product-related functionality - HubSpot CMS modules, HubL/HubDB components, landing pages, blog/resource templates, and dynamic front-end builds - WordPress and WooCommerce fixes, custom implementation, reusable content components, and theme/plugin adjustments - Performance improvements, Core Web Vitals cleanup, image/media optimization, and front-end technical fixes - Technical SEO implementation across templates, content structure, metadata, schema, and internal linking support - Debugging complex layout, responsive, UI, JavaScript, Liquid, HubL, PHP, and CSS issues - Ongoing support for launches, site updates, production fixes, and improvements inside existing codebases I’m used to working inside active client projects, existing codebases, and fast-moving environments where quality, clarity, and reliability matter. I can jump into a project, identify what needs to be fixed or improved, and move it forward efficiently. I also use AI-assisted workflows where appropriate to speed up research, troubleshooting, and implementation, while keeping quality control and technical decisions grounded in hands-on development experience. If you’re looking for a developer who can contribute quickly and solve real technical problems across Shopify, HubSpot, and WordPress, let’s talk.